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Publication numberUS3580863 A
Publication typeGrant
Publication dateMay 25, 1971
Filing dateAug 22, 1968
Priority dateMay 16, 1968
Publication numberUS 3580863 A, US 3580863A, US-A-3580863, US3580863 A, US3580863A
InventorsCampbell Albert B
Original AssigneeRoyal Products Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lather machine
US 3580863 A
Images(4)
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Description  (OCR text may contain errors)

May 25, 1971 A. B. CAMPBELL 3,580,863

LATHER MACHINE Filed Aug. 22, 1968 4 Sheets-Sheet 1 0 7' Toe/var:

y 25, 1.971 A. B. CAMPBELL 3,580,863

LATHER MACHINE Filed a- 22', 1968 f 4 Sheets-Sheet 5 971 A. B. CAMPBELL 3,580,363

LATHER MACHINE Filed Aug. 22, 1968 I 4 Sheets-Sheet 4 FIG. 9

l I I I i i mvzmon ALBERT B. CAMPBELL BY 7y o yl/an -4//, F {Q'vc, ATTORNEYS United States Patent Int. Cl. B011? 7/08 U.S. Cl. 252359 9 Claims ABSTRACT OF THE DISCLOSURE A compact, parallel, direct delivery type lather machine having a one-piece housing with compartments for a liquid soap reservoir and the lather forming components. The machine includes a lather guard having a first portion flush with the lower edge of the lather outlet, and a convex, extension-like portion depending below and on each side of the lather outlet to keep the operators hand from blocking the outlet. An improved liquid soap valve has an O-ring seal readily replaceable by snapping the O- ring on the end of the valve stem. An improved one-piece frame member for lather machines which includes a heating chamber surrounding the whipping chamber, a liquid soap inlet at one end of the member, a lather outlet at the other end of the member, and the heating chamber being sealed at the liquid soap inlet end of the member with the other end of the heating chamber being open for insertion of the heating elements.

This application is a continuation-in-part application filed copending with my earlier application, U.S. Ser. No. 729,577 filed May 16, 1968, now abandoned.

This invention relates to lather machines and in particular to an improved construction of a parallel, direct delivery type machine.

Lather producing machines are in widespread use at the present time, particularly in barber shops. Generally, the lather is produced by valve releasing a predetermined amount of liquid soap from a reservoir into a whipping chamber. Such machines are of the parallel, direct delivery type which produce the lather in the whipping chamber by means of a rapidly rotating elongated screw and feed the formed lather immediately to the outlet which is in line with the screw and whipping chamber. This type of machine is intended to be operated in a free-running manner. That is, as the lather is continuously being produced, the rapidly rotating whipping screw moves the formed lather in a steady stream towards the lather outlet. If the outlet is unobstructed, the lather is almost completely cleared from the outlet by the whipping screw which continues to rotate for a time after the motor has been switched oil. Unintentional blocking or choking of the lather outlet of a parallel, direct delivery type machine by the operators hand or a mound of lather in front of the outlet causes an immediate backup of the lather. The unused lather is trapped in the lather outlet passageway, dries out, and with normal usage of the machine, the amount of dried lather continuously builds up and blocks the outlet thereby restricting the lather outlet flow. The machine then must be dismantled and the lather outlet passageway and whipping chamber scrubbed and rinsed to remove the accumulation of dried lather. In some severe cases, and due to a failure to perform the constant maintenance required, the amount of lather backup is so extensive as to leak out through the rear of the whipping chamber and cause shorting of the electric heating elements and soiling of the working surface upon which the lather machine is situated.

The present invention is directed to an improved construction of a parallel, direct delivery type lather machine See in which there is provided a lather guard protecting the lather outlet port to alleviate the above described constant maintenance problem. As will be more particularly described hereinafter, the lather machine of the present invention incorporates a convex, downwardly sloping surface extending below and on each side of the lather outlet port, and having a portion flush with the lower edge of the outlet port which tends to keep the operators hand receiving the lather in the proper non-choking position below the lather outlet.

In another aspect of the invention, there is provided a lather machine of the parallel, direct delivery type which incorporates a one-piece housing with a liquid soap reservoir compartment, and a one-piece mounting frame for mounting the motor, whipping screw and motor switch so that the entire unit can be wired outside of the housing and readily assembled in the housing.

The lather machine of this invention also incorporates a new type valve constructed such that an inexpensive O-ring seal can be readily replaced upon wearing, obviating the requirement of replacing the complete valve unit in prior art machines.

Still another aspect of this invention is directed to providing a completely sealed heating chamber at the entrance end of the whipping chamber where the liquid soap initially enters the whipping chamber and begins the formation into lather. This sealed end prevents shorting of the heater elements which heretofore has been caused by the accumulation of minute leakage of liquid soap or a large amount of lather backup which persistently worked around the rubber seal commonly used at this end between the bottom 'wall of the whipping chamber and the heating chamber. In some cases when a large amount of liquid soap entered the whipping chamber and the motor was not operated due to an incorrect operation of the liquid soap valve and motor switch, the liquid soap oozed to the back of the whipping chamber and found its way past the rubber packing seal, saturating the heater elements.

The invention will be better understood from the following detailed description thereof taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of the improved lather machine of the present invention with a protective lather outlet guard;

FIG. 2 is a front elevational view of the machine of FIG. 1, illustrating the lather guard protecting the lather outlet opening;

FIG. 3 is a sectional view taken along section lines 3-3, and illustrating the one-piece housing including compartments for the liquid soap reservoir and the liquid soap whipping components;

FIG. 4 is a perspective view illustrating the one-piece frame member which includes a whipping chamber, a liquid soap inlet at one end, a lather outlet port at the other end, and means for supporting the whipping screw, motor, and motor switch;

FIG. 5 is a sectional elevational view taken along section lines 5-5 illustrating the interior of the whipping chamber and the placement of the heating elements around the chamber;

FIG. 6 is a sectional view taken along section lines 66 and illustrating the air entrance port into the Whipping chamber and the connections to the electrical heating elements therein;

FIG. 7 is a bottom plan view of the lather machine of this invention illustrating the mounting of the frame member with attached whipping components in the housing;

FIG. 8 is an exploded fragmentary view illustrating a new valve construction controlling the flow of liquid soap and including a readily replaceable O-ring seal;

FIG. 9 is a front sectional view taken along section line 9-9 of an improved one-piece frame member illustrating the open front end of the heating chamber through which the heating elements have been inserted;

FIG. 10 is a sectional view illustrating the one-piece frame member of FIG. 9 having a sealed rear end, with the heating elements inserted through the front of the heating chamber; and

FIG. 11 is a rear sectional view taken along section line 11-11 of the improved one-piece frame member of FIGS. 9 and 10 which incorporates a completely sealed heating chamber rear end.

Referring now to FIGS. 1-3 there is illustrated the improved lather machine 10 having a one-piece housing 12 preferably formed of a synthetic resin such as extrusion molded thermoplastic resin exemplified by Cycolac, an ABS polymer made by the Marbon Chemical Division of Borg-Warner, Washington, W. Va., or Tybrene, an ABS resin made by The Dow Chemical Company, Midland, Mich., or any other suitable material. The one-piece housing 12 is formed with a continuous outside wall 14, a horizontal inner wall 16 and a vertical inner wall 18 to divide the housing into two compartments. A liquid soap reservoir compartment 20 is bounded by the outside wall 14, the horizontal wall 16, and the vertical wall 18 as shown in FIG. 3. The remainder of the inside of housing 12 forms a whipping components compartment 22. At the top of the lather machine 10 there is provided a reservoir cover 26 which can be readily removed for filling the liquid soap 28 in reservoir 20.

Referring to FIG. 3 it can be seen that an actuating lever 32 operatively engages the liquid soap valve 34 and the switch 36. The actuating lever 32 includes an actuating stem 38 which engages the valve stem 40. Operation of the valve 34 enables the liquid soap to pass into a whipping chamber 42 through a passageway 44, and exit as lather at lather outlet port 46 directly in line with the whipping chamber.

The specific construction of the whipping chamber 42, the passageway 44, and the lather outlet port 46 can be seen more clearly by referring to a one-piece frame member 48 illustrated in FIG. 4 which can most conveniently be formed by casting. The one-piece member 48 also includes a chamber 50 concentric to the whipping chamber 42 for insertion therein of a series of electric heating elements 52 as illustrated in FIGS. 3 and 5. The heating elements are provided for heating the liquid soap in the reservoir compartment 20. FIGS. 9-11 illustrate an improved one-piece frame member which includes a permanent sealed wall at the end of the heating chamber nearest the liquid soap inlet to the whipping chamber as will be more particularly described hereinafter.

The lather machine 10 of the present invention incorporates a motor driven screw 54 mounted within the whipping chamber 42 for whipping the liquid soap into a lather for parallel, direct delivery of the lather to the immediately adjacent lather outlet 46 at the front of the lather machine 10. The member 48 includes an upwardly extending bracket 56 forming a support for the switch 36 and anchoring the member 48 in position. The U-shaped bracket 56 extends towards the top of the housing 12 and includes an aperture therein for accommodating a threaded portion 58 of the switch 36 which protrudes through the aperture. A nut 60 within the housing and immediately below the bracket 56 engages the screw threaded portion 58 for adjusting the position of switch 36. An S-shaped bracket 62 includes a guide portion 64 forming as a guide for the valve stem 40 of valve 34. Valve stem 40 extends through apertures in guide portion 64 and the soap reservoir cover 26 to detachably engage tab 38 on actuator 32. Similarly, the switch shaft 66 protrudes through the top of outside wall 14 and the bracket 62to detachably engage the actuating handle 32. A locking nut 68 is provided to threadably engage a threaded portion of the shaft 6 9 a o cu ly ock ll at the m m s etween th 4 nut 68 and the nut 60 in position. Referring to FIGS. 5 and 6, the one-piece metal frame member 48 is securely attached to the housing 12 by means of a pair of screws 70 which protrude through an aperture 72 in the base of the one-piece member 48 and thread into a respective threaded boss 74 below the liquid reservoir compartment.

A motor 76 is supported by means of two screws 78 passing through flanges 80 on each side of the one-piece member 48 and threadably engaging the motor 76. A motor shaft 82, driven by the motor 76, extends into the whipping chamber 42 and operatively engages the whipping screw 54 for rotating the screw at a high speed. At the back end of the one-piece member 48, a U-shaped rubber packing member 84 is located to prevent moisture from undesirably entering the heating chamber 50 and damaging or shorting the heating elements located therein. A horseshoe-shaped splash seal 86 mounted on the back of the whipping chamber 42 prevents the occasional splashing of lather or liquid soap within whipping chamber 42 from splashing back through the air entrance port 88 at the back of the whipping chamber. This arrangement is rnost clearly illustrated in FIGS. 3 and 6, wherein there is also shown the electrical wires 90 interconnecting the heating elements 52 within the heating chamber to a suitable source.

Referring now to FIGS. 1-3, it is to be particularly .noted that a lather guard 92 extends immediately below and on both sides of the lather outlet 46 to prevent undesirable blocking of the lather outlet. As previously described, the parallel, direct delivery type of lather machine illustrated herein operates in a free-running manner in quickly forming the lather and moving the same from the whipping chamber to lather outlet 46. As mentioned previously, blockage of the outlet and the resulting excessive lather backup in such machines currently in use has required constant maintenance, and in severe cases replacement of the heater elements or other components.

The lather guard 92 illustrated herein forms a guarding surface on each side of and below the lather outlet 46, as shown in FIG. 2 to prevent blockage of the outlet during lather formation and deliverance. The lather guard 92 has a belly-like, convex outer surface which extends downwardly from a junction 98 with the upper front housing portion 12a and flush with the lower lip 46a of the lather outlet to a junction 100 With the lower base housing portion 12b, which is recessed and set back from the upper housing. The upper junction 98 is flush with and in the same plane as the lather outlet 46. As can be seen most clearly in FIG. 3, the convex outer surface of lather guard 92 slopes away from the junction 98, forming a smooth extension-like convex portion 92a of the lower lip 46a of the outlet. The convex portion 92a provides a guard surface extending for a slight distance downwardly below the lather outlet. It must also be noted in FIGS. 1 and 2 that the guard 92 extends on both sides of the lather outletpreferably for a total overall distance of about a finger length to assist the operator in preventing a tight cupping of his hand around the outlet and undesirably choking the machine outlet. Thus, the guard 92 not only keeps the operators hand away from the front of the lather outlet, but also keeps the hand at a sufiicient distance below the outlet to prevent the free-flowing lather from building up on the hand and blocking the outlet. It is to be understood that other shapes of lather guard surfaces below outlet 46 can be utilized, providing the essential features of a first flush portion, followed by a convex, extension-like portion extend downward from the outlet, with the guard preferably extending across the lather outlet port for about a finger length.

In the final assembly of the unit, a suitable wire cable 102 is secured by a hold-down clip 106 surrounding the cable 102 and fastened to the housing of motor 76. The final wiring is accomplished with the components outside of the housing by suitably connecting the leads 9Q from the heating elements, the terminals 110 from the motor switch 36, the motor leads 112, and the power source leads 114. A keyhole slot 116 in the rear housing keeps the cable 102 in position.

It must be particularly noted that the lather machine can be readily assembled by initially mounting the motor and whipping screw, and the motor switch to the frame assembly 48. After wiring the components, the entire frame assembly and whipping components are mounted in the housing as a single unit. Insertion of the valve in the liquid soap reservoir, and engaging the actuator with the valve stem and motor switch shaft readily completes the assembly of the machine.

In operation, the motor 76 and the valve 34 are actuated by depressing the actuator 32, with the motor 76 being actuated to rotate the whipping screw a short period of time before the liquid valve is opened to allow liquid soap to enter the whipping chamber. Referring to FIG. 8, it can be seen that as the valve stem 40' is depressed against the action of spring 120, this releases the O-ring 122 from the valve seat 124 in the threaded nut 126. The nut 126 engages the threaded aperture 128 in the horizontal inner wall 16 in the reservoir As shown in FIG. 8, the passageway 44 through which the liquid soap passes from the reservoir into the whipping chamber, comprises the hollow interior portion 130 of the threaded valve nut 126 having a diameter smaller than a protruding lip 132 which is extruded from the one-piece cast member 48. The end 134 of the lip 132 at the top of the whipping chamber butts up against the horizontal wall 16 forming the bottom of the reservoir and immediately adjacent a threaded portion 128. The valve stem 40- ends in a circular end portion 136' followed by a larger diameter end portion 138 forming a shoulder 140 therebetween. O-ring 122, formed of rubber or any other suitable resilient type material has a suitable diameter so as to snap over the end piece 136 and be securely maintained in position on shoulder 140. It is to be particularly noted that a significant improvement in maintenance can be obtained using the valve illustrated in FIG. 8 in that upon wearing of the O-ring 122, a replacement ring can be readily snapped into position. In prior art valves utilized in lather machines, the entire valve unit had to be replaced upon wearing of the original unit.

An alternative valve conduit configuration at the passageway 44 can be provided by press fitting a steel bushing into the bottom wall 16 of the reservoir. The bushing can be formed so as to extend between the protruding lips 132 and down into the whipping chamber. Internal threads can be provided on the bushing for receiving a threaded valve seat such as the threaded valve nut 126.

Referring to FIGS. 9-11, there is illustrated an improved one-piece frame member of the type shown in FIG. 4. In the past an annoying and persistent accumulation of liquid soap leakage around the liquid soap entry to the whipping chamber found its way around the rubber packing member 84 (FIG. 6) and after a period of time shorted the heating elements 52. Excessive lather backup also contributed to this problem.

The improved one-piece frame member 150 of FIGS. 9-11 completely rectifies this problem and is adaptable to any type of lather machine having a heating chamber surrounding a whipping chamber with a liquid soap inlet to the whipping chamber at one end thereof, such as shown in the illustrations herein. In the improved frame member 150 the rear end 152 of the heating chamber is completely sealed by an extension wall 154 extending continuously as one piece from the outer wall 156 of the heating chamber to the outer wall 158 of the whipping chamber. This can be most conveniently provided by casting the frame member 150 as a single one-piece unit, although the sealing wall 154 can instead be formed of a separate member welded to the bottom wall 156 and wall 158. It may be noted that the front end 160 of the frame member is open to enable insertion of the heating elements 6 52 into the heating chamber with the heater wires passing through suitable apertures in the sealing end wall 154 at the extreme upper end of the heating chamber.

The frame member can be formed as a casting similar to frame member 48 (FIG. 4), except that the rear end 152 of the heating chamber is provided with the sealing end wall 154 and the front end is left open. This provides a significant improvement in preventing liquid soap leakage and lather backup from shorting the heater elements, which has been the primary and most disturbing problem of prior art lather machines. It is to be noted that the improved frame member of FIGS. 9-11 still permits the heating elements to be readily inserted into the heating chamber with the heater leads 90 conveniently located at the rear end of the member adjacent the remaining electrical components for suitable connec tions thereto. The open end 160 can either be left open or a suitable rubber seal or packing member 162 can be provided at this end. However, it must be noted such a seal is. unnecessary since there is no chance for leakage to enter the heating chamber from this end.

The foregoing detailed description has been given for clearance of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.

What is claimed is:

1. An improved, compact readilyassembled lather machine comprising:

a one-piece housing having a continuous outer wall forming an enclosure for said machine;

a liquid soap reservoir compartment having a horizontal bottom wall and a vertical back wall, both of said walls formed as part of said housing and continuous with said housing outer wall, said compartment including a liquid soap outlet in the bottom wall thereof,

liquid valve means in said liquid soap outlet for controlling the release of liquid soap from said reservoir;

a whipping components compartment within said housing defined by the remainder of said housing between said liquid soap reservoir compartment and said outer wall, said whipping components compartment enclosing the components for whipping said soap into lather;

a one-piece frame assembly for readily mounting said whipping components in said housing, said frame assembly including,

a whipping chamber,

a lather outlet formed as an extension of said whipping chamber at one end thereof,

a liquid soap inlet passageway at the other end of of said whipping chamber, said liquid soap passageway intermediate said whipping chamber and said liquid soap outlet in said reservoir bottom wall for communicating therebetween,

a heat chamber substantially surrounding said Whipping chamber for containing heating elements to heat the liquid soap in said reservoir,

a horseshoe-shaped bracket vertically extending from the other end of said whipping chamber with the closed end of said bracket away from said whipping chamber for supporting switch means near the top of said closed end,

means including a horizontal flange extending from each side of said frame assembly for mounting said frame assembly to said bottom wall immediately below said liquid soap reservoir compartment,

means including a vertical back flange at the other end of said whipping chamber;

an elongated whipping screw mounted for rotation in said whipping chmaber;

an electrical motor having a rotating shaft secured to said whipping screw for rotating the same;

means for mounting said motor to said frame assembly vertical back flange;

an electric switch for operating said motor, said switch having a switch actuating shaft extending from one end;

means for mounting said switch on said frame assembly bracket near the top of said closed end;

wiring means electrically connecting said heater elements, switch and motor for operating said machine from a power source;

means mounting said frame assembly in said whipping components compartment with said lather outlet projecting beyond said housing, said frame assembly bracket immediately adjacent said reservoir compartment vertical back wall, said switch actuator sha-ft projecting through an aperture in said continuous outer wall at the top of said housing, and said mounting means including threaded screw means engaging said frame assembly horizontal flange with said reservoir compartment horizontal bottom wall and threaded securing means engaging said switch for securing said frame assembly bracket and said switch to said housing.

2. An improved, compact lather assembly as claimed in claim 1, wherein said liquid valve means includes a valve stem protruding beyond the top of said housing, said machine assembly further including a guide bracket having one end operatively engaging said valve stem for guiding said valve stem during operation of said liquid valve means, the other end of said bracket intermediate said threaded nut and said housing so as to secure said guide bracket in position.

3. An improved, compact lather assembly as claimed in claim 1, whefein said reservoir compartment horizontal bottom wall includes a pair of threaded bosses projecting downwardly toward said frame assembly horizontal flange and wherein said threaded screw means engage said horizontal flange with each of said threaded bosses.

4. In a parallel, direct delivery lather machine forming lather from liquid soap, said machine including,

a housing enclosing the operative components of said machine,

a whipping chamber mounted in said housing,

a lather outlet aligned with said chamber at one end thereof and having an outlet port with upper and lower lips protruding from said housing,

a motor driven elongated whipping screw in said chamber for forming lather from said liquid soap entering the other end of said chamber.

said whipping screw directly moving said formed lather in a steady stream along said chamber to said outlet port for delivery to the machine operators hand receiving the lather at said outlet port, the improvement comprising:

a lather guard secured to said housing below said lather outlet and on each side thereof, said lather guard including;

a convex surface extending downwardly from said outlet port to a junction with said housing below said lather outlet;

a first portion of said convex surface abutting the lower lip of said outlet port;

said first portion of said convex surface and said outlet port lying in the same plane; and

a second portion of said convex surface extending from said first portion below said lather outlet and transversely extending on each side of said outlet port;

said lather guard enabling said operators hand receiving said lather from said outlet port to be located a sufiicient distance below and away from said outlet port so as to prevent blockage of said outlet portby the operators hand or by the lather delivered to the hand at said outlet port (luring operatiQn of said machin 5. The improved lather machine as claimed in claim 4, wherein said second portion transversely extending below said outlet port and on each side thereof has a total length at least about a finger length.

6. An improved lather machine in accordance with claim 1 wherein said liquid valve means further includes:

a valve stemextending substantially vertically into said liquid soap outlet, said stern being less in diameter than the diameter of said liquid soap outlet to allow a small space between said stem and said liquid soap outlet;

an angled dome-like valve seat having a frustoconical shaped wall with an opening therethrough defining said liquid soap outlet;

said valve seat tapering outwardly away from said liquid soap outlet;

a first circular disk secured to the end of said valve stem in said outlet below said valve seat;

said disk having a diameter substantially greater than the diameter of said liquid soap outlet;

a second circular disk secured to said first disk and having a diameter larger than said first disk, said first and second circular disks forming a shoulder therebetween;

an O-ring concentric to and snugly engaging said first circular disk to lie within said shoulder; and

means including spring means surrounding said valve stem urging said O-ring to engage a portion of said frusto-conical shaped wall to provide sealing surface engagement with said valve seat and to urge said O-ring to sealingly engage said shoulder;

whereby said O-ring can be readily replaced upon wearing thereof and said disks are maintained from entering said liquid soap outlet.

7. In a lather machine of the type having a liquid soap reservoir, a whipping chamber, a liquid soap inlet at the rear end of the whipping chamber for entering liquid soap from said reservoir into said chamber, a lather outlet at the front end of the whipping chamber, an elongated motor driven whipping screw inserted in the rear end of said whipping chamber and rotatingly mounted in said whipping chamber for whipping said liquid soap at said rear chamber endforming a lather exiting from said lather outlet, and a heating chamber substantially surrounding said Whipping chamber, including heating elements therein for heating said liquid soap in said reservoir, the improvement comprising:

said heating chamber defined by the combination of an outer wall of said whipping chamber extending from the rear to the front of said whipping chamber;

a heating chamber outer wall formed in an arc around said whipping chamber outer wall, and extending longitudinally substantially the length of said whipping chamber;

a sealing rear end wall transversely extending from and between both said heating chamber outer wall at the rear end thereof and the rear end of said whipping chamber outer wall to substantially seal the heating chamber rear end defined therebetween; and

the front end of said heating chamber defined between said whipping chamber outer wall front end and said heating chamber outer wall front end being substantially open to enable said heating elements to be inserted through said front end and into said heating chamber.

8. The improvement of claim 7, wherein said heating elements include a pair of electrical wires connected thereto and exiting from said heating chamber at the rear end thereof through an aperture between said sealing rear end wall and said whipping chamber outer wall at the extreme upper end of said heating chamber.

9. A. lather machine forming lather from liquid soap, said machine including a liquid soap reservoir having an outletpassage; a whipping chamber mounted below said liq id soap reservoir and co municatin ith sai outlet passage, and liquid valve means in said reservoir for controlling the flow of liquid soap from said reservoir to said whipping chamber through said outlet passage, the improvement comprising:

said valve means including a valve stem extending substantially'vertically into said outlet passage, said stem being less in diameter than the diameter of said outlet passage to allow a small space between said stem and said outlet passage;

an angled dome-like valve seat having a frusto-conical shaped wall with an opening therethrough defining said outlet passage;

said valve seat trapering outwardly away from said outlet passage;

a first circular disk secured to the end of said valve stem in said outlet below said valve seat;

said disk having a diameter substantially greater than the diameter of said outlet passage;

a second circular disk secured to said first disk and having a diameter larger than said first disk, said first and second circular disks forming a shoulder therebetween;

an O-ring concentric to and snugly engaging said first circular disk to lie within said shoulder; and

References Cited UNITED STATES PATENTS 2,764,324 9/1956 Landreth 222518X 2,965,309 12/1960 Parrott 239-343X 3,215,642 11/1965 Levy 239343X 2,960,998 11/1960 Sinker et al 137542 3,144,963 8/1964 Savage 222-66 STANLEY H. TOLLBERG, Primary Examiner 20 H. S. LANE, Assistant Examiner US. Cl. X.R.

Referenced by
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US5339987 *Jun 28, 1993Aug 23, 1994Andrade Bruce M DControlled flow, bursting water gun release mechanism
US5513771 *Sep 14, 1994May 7, 1996Cote; GeraldVending machine
US5906299 *Mar 26, 1996May 25, 1999Hagleitner Betriebshygiene Ges.M.B.H. & Co. KgSoap foam dispenser
US7766194 *Oct 16, 2008Aug 3, 2010Conopco, Inc.Motorized household liquid dispenser
WO1996029921A1 *Mar 26, 1996Oct 3, 1996Hagleitner BetriebshygieneFoamed soap dispenser
Classifications
U.S. Classification239/343, 222/190, 222/518, 392/479, 222/146.5, 222/333, 222/413, 392/473
International ClassificationA45D27/00, A45D27/10, A47K5/14, A47K5/00
Cooperative ClassificationA45D27/10, A47K5/14
European ClassificationA45D27/10, A47K5/14