Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2784865 A
Publication typeGrant
Publication dateMar 12, 1957
Filing dateJun 21, 1954
Priority dateJun 21, 1954
Publication numberUS 2784865 A, US 2784865A, US-A-2784865, US2784865 A, US2784865A
InventorsGlenn T Rieke
Original AssigneeRieke Metal Products Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Diaphragm sealed vent for containers
US 2784865 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 12, 1957 G. T. RIEKE 2,734,865


United States Patent DIAPHRAGM SEALED VENT FOR CONTAINERS Glenn T. Rieke, Auburn, Ind., assignor to Rieke Metal ProductsCorporation, Auburn, Ind., a corporation Application June 21, 1954, Serial No. 438,050

1 Claim. (Cl. 220--44) This invention relates to a diaphragm sealed vent for containers, such as metal drums and the like, and particularly wherein there is employed a plastic plug provided with a sealing diaphragm adapted to receive a small plug for controlled venting.

It has heretofore been the practice to provide two fittings in the head of fifty-five gallon drums, for example, one serving as an air vent for the other, wherein a pump or faucet may be utilized in either. It is the standard practice to employ pipe sizes wherein the larger closure is of a two inch size and the smaller closure of three-quarters inch size. However, it is desired, and therefore the purpose of this invention, to provide a vent for the container head opposite the drain plug.

It is accordingly the purpose of this invention to mount in such opening of the container a diaphragm sealed grommeted type of plastic plug to receive and house a small venting plug provided with a passage so that when the plug is removed and the diaphragm punctured, the venting plug may then be reinserted in the plug to control venting therethrough to the extent that it may be backed away from the plug in the manner hereinafter more particularly described. It may be noted that in the reconditioning and reuse of the container, the plug may be readily cut out and replaced with a new fitting by a simple and economical operation.

The full nature of the invention will be understood from the accompanying drawings and the following description and claim:

Fig. 1 is a central vertical section through a portion of the container with the sealed vent unit therein.

Fig. 2 is an exploded view of the several elements of the diaphragm sealed vent unit shown in cross section.

Fig. 3 is a top plan view of Fig. 1.

Fig. 4 is a view taken from the lines 44 of Fig. 2.

In the drawings there is shown a wall portion of the container to be vented having an opening 11 surrounded by a collar 12 and sealing ledge 13.

The diaphragm sealed vent unit includes a sealing plug 14 preferably formed of a flexible and compressible material, such as polyethylene (natural). Said plug is internally screw threaded at 15, being open at the top and initially closed at the bottom by a severable diaphragm 16. It is formed with an indented annular exterior wall 17 which is slightly larger than the opening 11 of the container so as to effect a seal therewith under compression. The lower initially closed end of the plug is tapered inwardly and downwardly at 18 to facilitate entry of the plug into the opening 11. The tapered portion terminates upwardly in a shoulder 19 to effect a lock with the under edge of the collar 12 upon the plug being forced therein. An opposed sealing shoulder 20 lies in spaced relation to the locking shoulder 19 for sealing engagement with the ledge 13 of the container. The upper portion of the plug is formed with a radially extending sealing surface 21 having an under cut portion 22 terminating in the sealing shoulder 20. Said plug may be forcibly compressed through the opening 11 in the container to 2,784,865 Patented Mar. 12, 1957 lock with the collar 12 and effect a seal therefor through the wall 17 and between the sealing shoulder 20 and ledge 13.

A vent plug 23 is adapted to screw into the plug, said vent plug having an exteriorly threaded shank 24 and a head 25 provided with a tool-engaging slot 26. The shank is slotted at 27 to provide a vent passage through the screw threads on one side thereof, said slot being open at its lower end and terminating at its upper end in a venting recess 28 surrounded by a sealing head 29 formed about the lower surface of the head 25.

A protective cap seal 30 is formed to fit over and be crimped about the undercut periphery 22 of the sealing plug 14, as shown in Fig. 1. For this purpose the cap, which is of metal, is closed at the top and formed with an upper extension 31 adapted to snugly fit over the head 25 of the plug. Said cap is flanged outwardly at 32 to seat over the sealing surface 21 of the sealing flange. The initially cylindrical downwardly extending lip portion 33 of the cap is dimensioned to surround the undercut periphery 22 of the plug for crimping thereabout in tamper-proof sealing relation.

In the use of the above described unit the plug 14 is pressed through the opening 11 to interlock with the collar 12 in sealing engagement with the container. The diaphragm 16 being in place, the container will thus be sealed against passage of fluid or gases therethrough. The vent plug 23 is screwed into the plug and the cap seal crimped thereabout. In this condition the container is sealed against venting or tampering with the contents. However, when placed in use for permiting withdrawal of the contents or the venting of the container, the cap seal and vent plug are removed from the flange, whereupon the diaphragm 16 is severed therefrom, opening a passageway through the internal screw threaded portion. For controlling the venting the plug is then screwed into the flange, permitting venting of gases through the slot 27 provided the plug is not screwed firmly .in the flange with its sealing bead 29 in sealing engagement with the sealing surface 21, as shown in Fig. 1.

By backing the plug off from the flange to permit venting through the slot 27 and from under the bead 29, the extent of venting may be controlled. Thus, if the plug is backed off sufliciently there will be free venting therethrough, or by screwing the plug down tightly the venting will be sealed off by the sealing bead, and control of the venting may be effected through intermediate atljustment of the plug.

When it is desired to recondition the container for reuse, the plug 14 may be cut out and removed from the opening, and a new plug with its sealed diaphragm again pressed into place. While there is shown and described herein a protective cap seal indicated at 30, it is to be understood that the invention is not limited to the use of such a seal inasmuch as the flange with its severable diaphragm and the sealing vent plug provides a suflicient venting closure initially sealed until the plug is removed and the diaphragm severed. Thus, the invention may be used with or Without the cap, the latter merely providing the usual protection against tampering.

The invention claimed is:

A vent unit for containers having an opening and sun rounding collar of predetermined depth comprising an axially bored internally threaded plug of compressible material closed by a severable diaphragm at its inner end and having an indented annular exterior wall of slightly less length than the axial length of said collar, said wall terminating at one end in a sealing shoulder engaging the outer end of said collar in compressible sealing relationship therewith and at its inner end terminating in a shoulder engaging in compressible sealing relationship with the inner end of said collar, said wall being slightly larger in diameter than the inner Wall of said collar, an inward ly and downwardly tapered end portion leading from said last mentioned shoulder to the inner end of said plug for facilitating the forcing of said plug through said collar with said Wall compressed therein and said shoulders in sealing engag'ement Withthe'op'posite' ends'o'f said collar, and an'eXternally threaded vent plug threaded into said bore, said vent plug being formed of compressible material With an integral cupped sealing head engaged with the outer end of said plug about the threaded bore therein, and a gas'venting passage extending through the screw threaded portion of said vent plug from the inner end communicating with said cup portion, whereby said plug will be self sealing and said'vent plug will seal ofi venting upon being 'secrewed into plug sealing engagement and will break such sealing to permit venting of said passage uponbeing backed off'from said plug out of sealing engagement.

References Cited in the file of this patent UNITED STATES PATENTS 866,938 Kinsey Sept. 24, 1907 1,241,352 Doering et al. Sept. 25, 1941 2,228,936 Walter Ian. 14, 1941 2,368,431 Smith Jan. 30, 1945 2,412,169 ONeil Dec. 3, 1946 2,653,609 Smith Sept. 29, 1953

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US866938 *Apr 29, 1907Sep 24, 1907Ernest U KinseyVacuum-vent for jars.
US1241352 *Feb 23, 1915Sep 25, 1917Charles Doering JrWater-dispensing device.
US2228936 *May 8, 1937Jan 14, 1941Carl W WalterFlask and closure means therefor
US2368431 *Jul 19, 1943Jan 30, 1945Arthur E SmithAmpoule
US2412169 *Dec 24, 1943Dec 3, 1946Continental Can CoVacuumized can closure
US2653609 *Aug 26, 1950Sep 29, 1953Arthur E SmithContainer closure
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2876775 *Oct 3, 1955Mar 10, 1959Sr Courtland H BarrBlood sample collection apparatus
US3021029 *Jan 21, 1959Feb 13, 1962Danielson Mfg CompanyVent tube and cap assembly
US3076668 *Oct 9, 1957Feb 5, 1963Famely MaxFittings for retaining cylindrical members in place
US3101205 *Aug 25, 1958Aug 20, 1963Norman R BenhamAnchor structure for brake cables and the like
US3131038 *Apr 7, 1961Apr 28, 1964Jackson John ESpudding anchor
US3199666 *Aug 20, 1962Aug 10, 1965Of Dallas Republic National BaCoin-holders
US3319833 *Aug 11, 1964May 16, 1967Church George AToothbrush and dentifrice holder
US3352195 *Dec 16, 1965Nov 14, 1967Illinois Tool WorksSelf-retained nut with imperforate head
US3386757 *Feb 23, 1967Jun 4, 1968Gen Motors CorpCombination mold and fastening means
US3487544 *Feb 16, 1968Jan 6, 1970Weissman BernardDental venting device
US3610263 *May 31, 1968Oct 5, 1971Walters Gary AlanFuel tank safety valve assembly
US3888347 *Aug 6, 1973Jun 10, 1975Kramer Thomas RollinInflated containers for fluid pressurized balls
US3958719 *Nov 30, 1972May 25, 1976Ward Dennis HRelating to containers
US3964508 *Jul 17, 1974Jun 22, 1976Chemidyne CorporationSafety cap assembly for pressurized vessels
US4070848 *Apr 28, 1977Jan 31, 1978Lingle Cleo MFastening bar assembly for frameless insulating panels
US4291788 *Feb 11, 1980Sep 29, 1981Tokico Ltd.Cylinder head
US4310102 *Apr 3, 1978Jan 12, 1982The Continental Group, Inc.Closure for pressure container
US4552283 *Nov 19, 1984Nov 12, 1985Filterwerk Mann & Hummel GmbhSafety device for clamping screws on pressurized fluid receptacles
US4733888 *Dec 10, 1986Mar 29, 1988Toelke Lester WProtector for threaded connections
US4905863 *Jun 9, 1988Mar 6, 1990Kelch Corp.Vent for portable gas tank or the like
US5160054 *Apr 22, 1991Nov 3, 1992Ingersoll-Rand CompanyTamper evident vent system for containers
US5193703 *Jan 22, 1992Mar 16, 1993Hewlett-Packard CompanyMethods and apparatus for forming an integral high pressure seal using mechanical actuation
US7537132Aug 20, 2004May 26, 2009American Flange & Mfg. Co., Inc.Tamper evident plug and combination
US7648042 *Sep 10, 2004Jan 19, 2010Korea Composite Research Co., Ltd.High gas-tightened metallic nozzle-boss for a high pressure composite vessel
US8505762Sep 8, 2010Aug 13, 2013Kautex Maschinenbau GmbhVessel neck construction of a pressure vessel
US20110107793 *Nov 2, 2010May 12, 2011Greg ReynoldsX-Earring expandable opening
US20120020740 *Jul 21, 2010Jan 26, 2012Norio OtsugaConnection structure for a manhole pipe and a sewer main pipe
US20120273508 *Apr 30, 2012Nov 1, 2012Haseloh Peter GFitting for a plastic-lined tank, and method for manufacturing a tank incorporating same
DE102009049948A1 *Oct 19, 2009May 19, 2011Kautex Maschinenbau GmbhDruckbehälter
DE102009049948B4 *Oct 19, 2009Feb 2, 2012Kautex Maschinenbau GmbhDruckbehälter
EP1099644A1 *Nov 9, 2000May 16, 2001DATOGRAF APPARATEBAU GMBH & CO.Container closure
WO1993022214A1 *Apr 22, 1992Oct 23, 1992Ingersoll Rand CoA tamper evident vent system for containers
U.S. Classification220/258.5, 285/196, 220/303, 285/201, 220/203.18, 411/913, 285/129.1, 411/970, 285/4
International ClassificationB65D51/16
Cooperative ClassificationY10S411/97, B65D51/1688, B65D51/1677, Y10S411/913
European ClassificationB65D51/16E3, B65D51/16E1