US 3258853 A
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Description (OCR text may contain errors)
y 5, 1966 J. w. BRADBURY 3,258,353
NAIL DRIER Filed Oct. 19, 1962 2 Sheets-Sheet 1 46 FIG -l 40 1-| I90 I40 I 0 INVENTOR. JAMES W. BRADBURY ATTORE:
y 5, 1966 J. w. BRADBURY 3,258,853
' NAIL DRIER Filed Oct. 19, 1962 2 s t s 3 INVENTOR. JAMES w BRADBURY I02 BY United States Patent 3,258,853 NAIL DRIER James W. Bradbury, 117 Arcadia Drive, Middletown, Ohio Filed Oct. 19, 1962, Ser. No. 231,652 14 Claims. (Cl. 34-202) This invention relates to a nail drier, the primary purpose of which is to set and dry the finish of decorative coatings applied to the finger nails. The device employs recirculated, heated air directed upon the finger nails automatically as the human hand is inserted into a service opening of the apparatus housing. The device includes also means to otherwise groom the nails and the cuticle, with the use of motor-driven tools such as grinders, buffers, cutters, and the like.
An object of the invention is to provide a portable lightweight apparatus for the purposes stated, which affords great convenience of use and effectiveness of operation.
Another object is to provide a device of the character stated, which may be expeditiously and inexpensively assembled with the use of a minimum number of simple components produced at low cost.
A further object is to avoid, in the assembly of the device, the customary use of screws, clips, and other forms of fasteners which are small and diflicult to handle in the course of assembly, and which have the effect of increasing the labor cost factor of production.
Another object is to provide a nail drier as above defined, which is constructed primarily of light-weight molded plastic components that present a pleasing appearance and permit easy cleaning when necessary.
The foregoing and other objects are attained by the means described herein and illustrated upon the accompanying drawings, in which:
FIG. 1 is a cross-sectional view taken on a vertical plane approximately on the line 1--1 of FIG. 2 bisecting the apparatus housing from front to rear.
FIG. 2 is a cross-section taken on line 2--2 of FIG. 1.
FIG. 3 is a perspective view of a shroud member incorporating a heating element, an illuminator, and an electric control switch.
FIG. 4 is an exploded perspective view of an electric motor and mounting means therefor.
FIG. 5 is a detail view partly in cross-section, showing a motor mount, and taken on line 5-5 of FIG. 1.
FIG. 6 is a fragmental detail view of the motor construction.
FIG. 7 is a fragmental detail of a connecting means.
FIG. 8 is an electric circuit diagram for the electrical elements of the drier structure.
The nail drier apparatus of the invention may comprise .in general a hooded base unit 8 of generally rectangular configuration, the hood providing a wide front opening 10, into which the ends of the fingers of the user may be introduced. The palm and fingers of the hand rest upon a hand rest 12 and a switch button 14, while heated air circulates in the direction of the arrows, FIG. 1, to dry the fingernails. A fan 16 driven by a motor 18 circulates the air which is heated by an electric heating element 20. The downwardly moving heated air driven toward the switch button 14, passes through the openings 22 of a grille 24 and is recirculated upwardly through motor compartment 26 by the fan.
From the foregoing, it will be understood that the fingers of the user's hand projected through opening 10, may depress the switch button 14 to activate the fan motor and heating element 20 and thereby initiate a flow of heated air for drying a coatingpreviously applied to the fingernails. The character 28 indicates an upright partition member or deflector separating the finger compartment 30 from the fan and motor compartment.
As was pointed out previously herein, an object of the 3,258,853 Patented July 5, 1966 invention is to facilitate and expedite assembly of the apparatus, without the use of screws or similar fasteners requiring tedious handwor-k and considerable labor. To this end, the majority of components are made of molded plastic material which lends itself to quick and easy join ing by means of hook or snap connections, with minimal expenditure of time and labor.
In furtherance of this objective, the hood 32 is fabricated as a molded plastic piece, using nylon or an equivalent material, and having a lower edge 34 provided with a series of depending tabs 36 shown in FIG. 2 as turned or hooked for establishing a fixed connection with the base unit 38. The hood includes an upper opening 40 to accommodate a flexible shaft coupling 42 that may be detachably applied to the upper end of motor shaft 44, for driving a flexible shaft 46 having at its remote end a suitable chuck, not shown, to receive suitable tools for the shaping and polishing of fingernails, and the grooming of cuticle. This arrangement will be described in greater detail hereinafter.
Base unit 38 is a molded plastic piece formed of nylon or equivalent material, to present side walls 48 and 50, a rear wall 52, and a sloping front wall 54 providing a rest for the users fingers in the region of the palm. These walls, along with the grille 24 and a circular open shroud 56 for fan 16, are integral parts of the base unit. A portion of shroud 56, and of the grille 24, is developed to provide a ridge wall 58 spanning the base unit from one side wall to the other, and adapted to support the deflector 28 preferably within a long groove 60 of the ridge wall, with the aid of connecting means similar to that of FIG. 7.
The opening 62 in the bottom of the fan shroud is elevated above the lower perimeter of the base unit, so.
as to receive the current of air passing downwardly through the grille openings 22, for recirculation. Base unit 38 has an outwardly projecting continuous flange 64, against which may be fitted a closure plate 66 for the open bottom of the base unit. The closure plate may be detachably secured in position by means of an endless elastic retainer band 68 which embraces flange 64 and the perimeter of plate 66.
Closure plate 66 is formed of molded plastic material, and includes a somewhat resilient marginal rib 70 which is upstanding upon the plate near its outer edges, said rib having an outwardly turned lip 72 adapted to engage an interior continuous shallow groove 74 formed in the several upright walls of the base unit above its flange 64. By means of this rib and groove construction, the closure plate may be snapped into position, or removed when necessary, upon displacement of elastic band 68. A similar rib and groove connection may be provided at 76 for releasably anchoring the finger rest and grillework to the closure plate.
The character 78 indicates one of several stools integral upon the closure plate, for limiting downward travel of switch button 14. At 80 is a hollow upstanding wall on plate 66 which may isolate electric conductors leading to the base unit through nipple 82.
Referring to FIG. 2, it should be noted that side walls 48 and 50 are double Walls, each having a depending leg 84 and an upper shelf 86, the shelf being provided at intervals with openings or slots 88 (FIG. 7) to receive the depending tabs 36 of hood 32. In assembling, the tabs are projected through the slots 88 and are anchored therein to hold the hood in place. Anchoring may be effected by means of hooks 37 formed integrally upon the tabs, FIG. 7, to engage the slots and preclude their withdrawal. The rear wall 52 of the base may be similarly connected to the rear portion of hood 32, if desired.
Motor 18 is adapted to be supported upon base unit 8, with the simple expedient of providing on the unit a plurality of integral upstanding stools 90 properly spaced to register with slotted hanger arms 92 extending from the stack 94 of magnetic laminations constituting the field of the motor. The slots of the hanger arms are adapted to receive rubber grommets 96 which fit over the stools 90 to resiliently support the motor.
The motor may comprise the stack 94 apertured at 98 to receive rotor 100 which is fixed to shaft 44. Bearings 99 for the shaft may be provided in the plastic end plates 102, each of which carries a pair of locating pins 104 which seat in apertures 106 of the stack. A spring clip 108 at each side of the motor holds the end plates 102- against the stack of laminations for holding the motor components in assembled condition, FIG. 6. The lower end of motor shaft 44 carries fan 16. At 110 is indicated a shunt bar placed across the stack elements.
The forward edge 112 of hood 32 is fitted toa lip 114 formed upon an arch member 116 which spans the base unit from side to side. Similarly to the hood, the arch member 116 has opposite upright side walls 118 whose lower edges carry depending hooked tabs 122 that enter slots 124 in the shelf 86 of the base unit, for locating and holding the arch member upon the base unit in the manner of FIG. 7. The arch member preferably is of a molded plastic material, such as nylon or the equivalent.
The plastic deflector 28, which substantially lines the arch member 116, has hook tab connections with the base unit at 126-126 similar to that of FIG. 7. As FIG. 2 indicates, the deflector side walls 128128 are spaced from the arch member and are integral with the transverse partition panel 130 thereof. Panel portion 130 at its lower edge may be hooked onto ridge wall 58 by means of tab connections similar to FIG. 7, if desired.
To neatly trim the service opening at the forward edge portion of arch member 116, a decorative trim arch 132 of molded plastic material may be applied about the opening, with the legs of the trim arch anchored to base unit 8 at 134. The top of the trim arch may have connection at 136 with the structural arch member 116, using a tongue and slot connection as shown upon FIG. 1.
Depending from the trim arch 132 is a transverse front apron 138, which establishes the height of service opening 10 and serves also to deflect air downwardly toward grille 24. The apron preferably is integral with the trim arch, and formed of translucent plastic so as to pass light rays therethrough emanating from an illuminator or small electric bulb 140 located behind it. If desired, a translucent plastic block 142 may be applied to the apron for producing an attractive lighting effect, and such block may be suitably embellished as by means of an emblem or the like, not shown.
Heating element 20 may be wired so as to be energized whenever the fan motor 18 is placed in operation, this being achieved by the user of the device placing the fingers upon and depressing switch button 14. Beneath button 14 may be located a, suitable normally opencircuited electric switch comprising contacts 144 and 146. The service wires entering the housing at 82 are to be connected in series with motor 18 and contacts 144146, and with heating element 20, whereby closing of the contacts by depressing the button 14 initiates a current of heated air directed downwardly onto and through grille 24. Leaf springs 148 normally bias the switch contracts to open-circuit condition, by pressing upwardly against the snap-on button plate 150 of the button.
Means is provided for using the motor 18 to drive a flexible shaft 46 without energizing the heater 20, and without depressing button 14. Such means comprises a .second motor switch including contacts 152 and 154,
which may be placed in closed-circuit condition incident to insertion of the flexible shaft coupling 42 into opening 40 for making a drive connection with the upper end of the motor shaft. The coupling may include an extending shoulder 156 adapted to strike and rock a switch actuating lever 158 about pivot 160 in counter-clockwise direction, thereby to advance the movable contact 154 onto stationary contact 152 for closing the motor circuit.
As long as the flexible shaft coupling 42 is connected to the motor shaft, lever 158 will be depressed by shoulder 156 to keep the switch contacts 152-154 closed. However, when the coupling is pulled upwardly off the motor shaft, the switch actuating lever returns to a normal elevated position for separating the contacts 152-154 and breaking the motor circuit. Return of the switch actuating lever to normal position may be effected by means of a suitable spring 162, arranged as shown.
As indicated upon FIG. 3, the movable contact 154 is readily assembled upon lever 158 by sliding the formed metallic contact holder 164 into a slot 166 provided in the side of the lever. Pivot pin 160 mounts the lever upon the spaced bracket arms 168 at holes 170.
It may here be noted that a user of the device may either dry the fingernails by resting the fingers on switch button 14, or alternatively, the device may be used for shaping or trimming the nails or the cuticle by application of the flexible drive means 46 which carries at its remote end a suitable tool for such purposes.
FIG. 3 illustrates in perspective a shroud member 172, formed of light-weight metal by preference, and adapted to carry the switch arrangement just described, along with the heating element 20 and illuminator or lamp 141).
The shroud has a base wall 174, including a forward extension 176, upon which may be conveniently mounted the lamp holder clip 178, the connection being made by simply sliding the clip onto extension 176 as indicated upon FIG. 3. Proper electrical connections are made to the lamp socket, in conventional manner, for energizing the lamp whenever motor 18 is energized, or whenever one or the other of the 'motor control switches is closedcircuited, as may be desired.
The rear wall 180 of shroud 172 may be slitted and punched to form pairs of arms 182 shaped to embrace the heating element 20 near the ends of the latter. The metal displaced incident to formation of arms 182, provide-s openings 184 in the rear wall of the shroud permitting passage of air from fan 16 about and past the heating element. Additional openings for the purpose may be provided at 186.
The top wall 188 of the shroud has a forward edge slitted and shaped to present alternate upturned wings 190, and downturned wings 192. The upturned wings are adapted to embrace lip 114 of arch member 116 to fix the shroud against displacement toward and from apron 138, while the downturned wings 192 serve as air deflectors. The shroud is fixed also to the upper portion of air deflector panel 130, as by means of downwardly punched tabs 194 formed from the material of the shroud base wall 174 and projected through suitable slots 196 in the upper portion of panel 130.
By means of the shroud construction and its simplified mounting as above disclosed, application of the shroud and the components thereon is greatly facilitated and expedited in the course of assembly of the apparatus. It is to be noted also that no screws or other separate fasteners difiicult to handle are employed in assembling the device, so that substantial savings of time and labor are achieved in the manufacture thereof.
It is to be understood that various modifications and changes may be made in the structural details of the device, within the scope of the appended claims, without departing from the spirit of the invention.
What is claimed is:
1. Apparatus for the care and treatment of fingernails, comprising in combination, a molded plastic base unit having front, rear, and opposite side walls, and an apertured shelf integral with said rear and side walls, fan means including an electric motor supported upon the base unit, an open shroud disposed about said fan means and through which a current of air may be drawn upwardly, a transverse ridge wall integral with the side walls and the shroud to span the base unit,and a flat grille integral with the ridge wall and the front wall and lying substantially horizontally above and spaced from the plane of the bottom of the base unit, said grille having openings therein through which air may be transferred to the shroud to flow upwardly through the latter, a hollow hood mounted on said base and enclosing the fan means and motor, and an arch member contiguous to the hood and covering and in spaced relation to substantially the entire grille area, a deflector panel upstanding upon the ridge wall between the fan means and motor and the arch member and defining a motor compartment beneath the hood and a finger compartment beneath the arch member, said deflector panel being limited in height to provide for passage of air over the top thereof from the motor compartment to the finger compartment, said finger compartment having a front opening wherein all the fingers of a human hand may be inserted to rest upon the grille,'and means forwardly of the top part of the deflector panel and in the finger compartment for deflecting air downwardly toward and through the grille to be recirculated through the motor ing air upwardly, through the shroud, a transverse ridge wall formed integrally with the plastic shroud and grille and extending from one side wall to the other, said grille having openings therein through which air may travel to and pass upwardly through the shroud, a molded plastic hollow hood confining the fan means and motor, and a molded plastic arch member contiguous to the hood and overhanging the grille aforesaid, a molded plastic deflector panel upstanding upon the ridge wall and defining with said hood a motor compartment and a forward finger wardly through the shroud and the hood to and through said airflow passage.
4. The combination as set forth in claim 3, including a control means for the fan motor located within the area of the grille and responsive to finger pressure for control of said motor.
5. Apparatus for the care and treatment of fingernails, comprisingincombination, a molded plastic base unit having a bottom and front, rear, and opposite side walls, and an apertured shelf integral with saidrear and side Walls at an elevation above the plane of the bottom of the base unit,
fan means including an electric motor supported upon the base unit, an open shroud and a substantially flat grille formed integrally with the base unit and disposed in substantial coplanar relationship, the shroud being disposed about the fan means for directing air upwardly, a transverse ridge wall formed integrally with and joining the shroud and thegrille and extending from one side wall to the other, said grille. having opening-s therein through which air may pass to the lower part of the shroud and then pass upwardly through the shroud, a molded plastic hollow hood overlying and enclosing the fan means 6, and motor, and a molded plastic arch member contiguous to the hood and overhanging the grille aforesaid, a molded plastic partitioning deflector panel upstanding upon the ridge wall to coact with the hood to form a motor compartment and to form a finger compartment beneath the arch member, said deflector panel being limited in height to provide for passage of air thereover from the motor compartment into the finger compartment, said finger compartment having a front opening wherein all the fingers of a human hand may be inserted to rest upon the grille, and a control means for the fan motor upstanding from the grille and responsive to finger pressure for selectively maintaining an energized condition of the fan motor.
6. Apparatus for the care and treatment of fingernails, comprising in combination, a molded plastic base unit having front, rear, and opposite side walls, fan means including an electric motor supported upon the base unit, an open shroud and a grille formed integrally with the base unit and disposed in substantially parallel planes, the fan means being disposed for drawing air upwardly through the shroud, and the grille having openings therein communicating with the shroud opening for circulation of air therethrough, a molded plastic hollow hood confining the fan means and motor, and a molded plastic arch member contiguous to the hood and overhanging the grille openings, a molded plastic deflector panel upstanding upon the base unit to define a motor compartment beneath the hood and a finger compartment beneath the arch member, said panel being limited in height to provide for passage of air thereover from one compartment to the other, said finger compartment havinga front opening wherein all the fingers of a human hand may be inserted to rest upon the grille, and cooperative snap-action connector means on the base unit, the hood, and the arch member, for joining such parts in the co operative relationship aforesaid.
7. Apparatus as set forth in claim 6, including a snapon shroud unit incorporating a motor switch, an air heating element, and an illuminator, said last-mentioned unit being located above and astride the deflector panel.
8. Apparatus for the care and treatment of fingernails, comprising in combination, a molded plastic base unit, fan means including an electric motor supported upon the base unit, an open shroud and a grille formed integrally with the base unit and disposed in substantially parallel planes, the fan means being disposed for drawing air upwardly through the shroud, and the grille having openings therein communicating with the shroud opening, a hollow hood on the base unit confining the fan means and motor, and a molded plastic arch member contiguous to the hood and overhanging the grille, a deflector upstanding upon the base unit to define a motor compartment beneath the hood and a finger compartment beneath the arch member, said deflector beinglim- --ited in height to provide for passage of air thereover from one compartment to the other, said finger compartment having a front opening wherein all the fingers of a human hand may be inserted to rest upon the grille, a translucent apron depending from the arch member to define the height of the aforesaid front opening and to deflect air downwardly onto the grille, and an illuminator disposed in the finger compartment behind the apron to i1- luminate the apron and the grille subjacent thereto.
9. Apparatus as set forth in claim 8, wherein the combination includes means for heating the circulated air,
and means for controlling operation of the motor.
10. Apparatus for care and treatment of fingernails, comprising means forming a housing having a bottom wall, a rear wall and side walls, a top wall forming an upward and forward extension of the rear wall and joined to the side Walls, a horizontally disposed structure elevated from the bottom wall. and joined at the back and sides thereof to the rear and side walls and forming with the bottom, back and side walls an air flow chamher, a low upwardly and rearwardly extending front wall joined to the forward part of said structure, means forming a partitioning panel rising from said horizontal structure approximately midway between the said low front wall and the rear wall and terminating short of the top Wall and rearwardly of the forwardmost part of the top wall and forming an air passageway over the panel, said panel and said top, rear and side walls forming a motor and fan housing, said horizontal structure being formed to permit air to flow upwardly from said air flow chamber into said housing, an electric motor and fan in said housing for drawing air up from said air chamber, said horizontal structure being formed with grille openings in the forward part thereof between said low. wall and said partition paneland said grille openings leading into said air flow chamber, said side walls extending forwardly of said partition panel and forming a forwardly opening finger receiving chamber above said grille openings, an electrical air heating means positioned in said air passageway above the partition panel, means for controlling energization of said motor and said heating means,
and means for deflecting heated air downwardly from the top part of said finger receiving chamber onto and through said grille openings for recirculation through the air flow chamber and motor housing.
11. The invention as defined by claim 10 wherein the said means for controlling energization of said motor and heating means comprises a switch button disposed within an opening in said horizontal structure adjacent to said grille openings with spring means interposed between the underside of said button and said bottom wall and normally urging said button upwardly into a position to de-energize said electric motor and heating means.
12. The invention according to claim 10 with electric circuit means having said electric motor and heating means therein, said means for controlling the electric motor and heating means being a finger actuated normally open switch in said circuit, a second normally closed switch element in said circuit and including separable engaged contacts, spring held movable lever means normally yieldingly maintaining said contacts engaged, said casing having a top wall opening therein, said motor having an armature shaft aligned with top wall opening, and said lever means being disposed adjacent to said wall opening to be shifted to contact separating position upon introduction of an element into said opening toward and for engagement with said motor shaft, the first said switch maintaining control of the circuit for controlling the operation of the motor and fan when the second switch is open.
13. Apparatus for care and treatment of fingernails, comprising in combination a base unit having a bottom wall and front, rear and opposite side walls, said front wall curving upwardly and rearwardly from the bottom wall between forward portions of and at a lower elevation than the side walls, a substantially flat grille and circular open shroud member forming a unitary structure lying in a substantially horizontal plane with and spaced above said bottom and forming with the latter an airflow space, said unitary structure being formed integrally with the front, rear and opposite side walls and lying in the major extent thereof below the top of the rear and side walls, the grillehaving a front side joined to said front wall with its top substantially in the horizontal plane of the rearmost part of said front wall whereby a hand may rest upon the top of the front wall with the fingers thereof extending rearwardly over the grille and resting upon the latter, the grille having a central opening and having other openings surrounding the central opening, said unitary structure including a ridge wall dividing the grille and open shroud one from the other and extending transversely between said side walls, an electric switch button disposed at said central opening of the grille for actuating an electric circuit controlling switch, yieldable means between said switch button and said bottom wall urging said button toward a switch open position, a hood mounted upon said side and rear walls above said open shroud, a partitioning panel resting upon and rising from said ridge wall and terminating at its top short of said hood, the hood and partitioning panel forming an electric motor chamber, an electric motor mounted within said chamber and having a vertically disposed shaft, a fan attached to the lower end of said shaft and lying within the area defined by said open hood, said switch being in circuit with said electric motor whereby depression of said switch but ton effects energization of the motor to operate said fan and effect movement of air by the latter through the said other openings of the grille into said air space and deliver the same across the top of said partitioning panel, electric heating means disposed between the top of said partitioning panel and said hood, and means disposed forwardly of said heating means for deflecting heated air downwardly toward said grille and onto fingers of a hand resting on the grille. V
14. Apparatus for facilitating care and treatment of fingernails, comprising a substantially flat base body having forward and rear ends, upstanding side walls and a transverse rear wall thereon, a transverse front wall between said side walls and of materially less height than the side walls, said front wall having an upwardly and rearwardly sloping top surface forming a rest for a human hand, a substantially flat grille structure horizontally supported between said side walls at the rear of said front wall and at an elevation from said base forming an air passage space therebelow between the grille and the base, the grille having a top substantially in the horizontal plane of the top of said front wall, the grillefurther having a central opening and air passing openings around the central opening, an upstanding hood structure arching from said side walls over said grille and having an open front side disposed rearwardly of said front wall, an upright partition having a bottom edge operatively connected with the rear of said grille and inclined forwardly above and overlying a portion of the grille and terminating at its top below the overlying top of the hood to form with the top of the hood an air flow passage, an electric motor and air circulating fan means supported rearwardly of said partition, means whereby said air circulating fan means may draw air through said grille into and fromsaid air passage space and direct such air upwardly to pass through said air flow passage into the top of said hood structure, means in the forward upper part of said hood structure to deflect air downwardly therefrom toward the top of said grille, and a relatively wide finger'controlled electric switch button yieldingly supported in the said central opening of the grille for facilitating finger control of electric current to said fan motor and for supporting the fingers of a human hand resting upon said front wall in position to have the said downwardly deflected air strike thereagainst.
References Cited by the Examiner UNITED STATES PATENTS 1,682,475 8/1928 Blomquist 132-736 1,893,561 1/1933 ODonnell 13273.6 2,184,858 12/ 1939 Goodman 34-239 2,260,687 10/1941 Lasha 34-239 2,438,762 3/ 1948 McLeckie 34 202 2,673,402 3/ 1954 Chambers 34-202 FOREIGN PATENTS 1,005,277 12/1951, France. 1,098,065 3/1955 France.
WILLIAM F. ODEA, Primary Examiner. NORMAN YUDKOFF, Examiner.
J. P. ROBINSON, C. R. REMKE,'Assistant Examiners.