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Publication numberUS2568976 A
Publication typeGrant
Publication dateSep 25, 1951
Filing dateOct 30, 1948
Priority dateOct 30, 1948
Publication numberUS 2568976 A, US 2568976A, US-A-2568976, US2568976 A, US2568976A
InventorsAndrews Alvadore M
Original AssigneeAndrews Alvadore M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flexible valve
US 2568976 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

A. M. ANDREWS FLEXIBLE VALVE Filed Oct. 30, 1948 INVENTOR 41 VA 0085 M 4W0R5 1 5 ATTVORNEY Tia- Patented Sept. 25, 1951 UNITED ST TES PATENT oFFIc-BI;

v FLEXIBLE VALVE Alvadore M. Andrews, Portland, Oreg.. Application October so, 1943, Serial No. 57,610 4 Claims. (o1. 251-119) This invention relates to an all flexible valve for'inflatable articles such as pneumatic mattresses, pillows, footballs, or in fact anything that will be inflated to moderate pressures. These uses are not exhaustive but are named for information.

Since inflatable articles such as pillows may not have rigid parts in their composition, it an object of this invention to provide an automatic self-closing valve that contains no hard structure, yet is as positive, if not more so, than a metal or rubber valve on a metal seatf Since rubberarticles, meaning rubber and those other substances having the well known characteristics of rubber, are not subject to corrosion fromdampness, the objective is a valve of that character.

Another important object is a valve that, save for a very small area around the inlet opening,

is wholly unattached to the inflated article itself; hence rough usage applied to the latter does not tend to loosen the valve from where it is placed.

A drawing accompanies and forms a part of this disclosure, in which Fig. 1 is a plan view of the valve showing the side that will be made fast to the inside of the article to be valved for inflation;

Fig. 2 is an end view in slightly enlarged;

Fig. 3 is the same section shown in Fig. 6, before the match stick 9 was inserted;

Fig. 4 shows a fragment of a valved inflatable object, with the valve of Fig. 1 partly beneath and partly projecting beyond the fragment, and containing a match stick for deflation;

Fig. 5 is an end view of Fig. 2, but with the addition of a match stick, or similar article thrust into the valve opening and projecting through the sack mouth, to deflate the inflated article when needful; and

Fig. 6 is a section taken on the plane 6-6 of Fig. 4.

Describing the valve in detail: A body portion l, of the valve is in the form of a flat, open mouth sack made of Vinylite plastic or other flexible rubbery material. It is shown to be made up from two similar pieces, 2 and 3, vulcanized or otherwise similarly fastened together over the area designated in dotted outline in Fig. 1, and identified by numeral 6, save that the topmost piece, 2, is provided with a valve opening 5; and the lower, otherwise inside portion of the sack l, indicated by numeral 3, has attached thereto a rubbery spring 4, attached at the points projection of Fig. 1,

Lin any suitable manner, but is not otherwise attached.

The inflatable object, of which fragments only are shown as l, is provided with a valve opening 8, that is first placed in registry with the valve opening 5; and the valve and-the inside surface of the inflatable article 1, are securely vulcanized or otherwise firmly attached over the area designated in dotted outline by numeral i in Fig. 4. It will be seen that the valve, save for the area designated by numeral 6 in Fig. 4, hangs free on the inside of the inflated article '1. Whether or not it hugs the inside surface of I is unimportant.

The rubbery spring 4 can best be made, as I now am'informed, by cutting an annulus from the end of a seamless vulcanized rubbery hose, having a circumference equal to the length of the spring 4, as required, cut at one point, when-it will be found that the rubbery material has a natural set to remain in its annular shape and that when it is forcibly unrolled and fastened to the sack I, it will cause the sack to assume an arcuate form as shown in Fig. 2; the strength of the spring and its tendency to bow the two parts of the open mouth sack into air tight contact being a function of its original thickness, as the wall of a rubbery hose. This is the selfclosing feature and it will close the two parts of the open mouth of the sack together into a hermetic closure whether or not there is any in-'- ternal pressure in the article I. If made of good material, the rubbery strength with age.

When it is desired to deflate the article 1, a match stick 9, or any other convenient and similar tool may be easily inserted through the valve openings 8 and 5 and out past the end of the sack l as shown in Figs. 4, 5 and 6, when the air has a free passageway out.

Having disclosed my new valve and explained its construction and use, what I claim as new and desire to secure by Letters Patent, is:

1. A valve device for an inflatable article, said valve comprising a valve body including a pair of walls of flexible material, a pair of coextensive adjacent edges of said Walls being free from each other at one end of said body and defining spring does not lose a valve mouth, an air passage opening in the being free from each other at one end of said.

body and defining a valve mouth, an air passage opening in the median area of one of said walls and communicating with said mouth in the separated condition of said walls and mouth edges permitting free passage of air through said body,

the second of said walls including a portion having a normal resilient bias tending to cause said second wall to assume an arcuate configuration in the direction opposite said one wall whereby said one wall is normally held firmly against said second wall so as to close said valve mouth and said'air passage opening.

3. A' valve device for an inflatable article, said valve comprising a valve body including a pair or walls of flexible material, a pair of coexten- 'sive adjacent edges of said walls being free from each other at one end of said body and defining a valve mouth, an air passage opening in the median area of one of said walls and communicating with said mouth in the separated condition of said walls and mouth edges permitting free passage of air through said body, one of said walls adjacent said valve mouth including a relatively stifi resilient portion extending transversely of'said body throughout the full width 01 said mouth and having a natural bias tending to cause it to assume an arcuate shape in the direction transversely of said body and alined with .said mouth edges, the concave surface of said arcuate shape facing away from said body whereby said other body wall portion adjacent said mouth is flrmly held in'sealed relation against the convex surface of said first wall portion.

"and'de'flning a valve mouth, the adjacent edges of said walls'around the remainder of said body being sealed together, an air passage opening in the median area of one of said walls, an elongated resilient element having a normal bias tending to cause it to assume an arcuate shape, said element having a length at least as great as thewidth of the valve body mouth, said pair of walls adjacent said mouth being stretched across the convex surface or said element and secured at opposite edges to said element where- --bysaid wall portions defining said month are normally held in firm contact with eachqgothcr against the arcuate convex surface or said element.

' ALVADORE M. ANDREWS.

REFERENCES CITED The following referencesare of record in the file of this patent:

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1641382 *Dec 5, 1925Sep 6, 1927P Goldsmith Sons CompanyValve for playing balls
US1680757 *Nov 3, 1924Aug 14, 1928Mine Safety Applianoe CompanyFlutter valve
US1702974 *May 12, 1928Feb 19, 1929Spalding & Bros AgCollapsible valve and method of making same
US1809259 *May 4, 1929Jun 9, 1931Williams Harrison RValve bag closure
GB337958A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2821338 *Oct 21, 1954Jan 28, 1958Metzger Melvin RValve-equipped container
US2946502 *Nov 10, 1954Jul 26, 1960Metzger Melvin RValve-equipped containers
US3364941 *Sep 9, 1965Jan 23, 1968Gen ElectricCheck valve
US3410300 *Oct 14, 1966Nov 12, 1968Custom Materials IncValve
US4263682 *Sep 1, 1978Apr 28, 1981Dow Corning CorporationSelf-sealing valve and fluid fillable article including such a valve
US4449242 *Aug 31, 1982May 15, 1984The United States Of America As Represented By The Secretary Of The Air ForceFlexible, resilient anti-contamination baffle
US4662883 *Jul 17, 1985May 5, 1987Mentor CorporationSelf-sealing valve for fluid fillable device
US4775379 *Dec 30, 1986Oct 4, 1988Mentor CorporationSelf-sealing valve for fluid fillable article
US5019101 *May 31, 1989May 28, 1991Purkait Bobby KSelf-sealing valve for implantable device
US8356619Jul 29, 2008Jan 22, 2013Bodylineair Production AbNon return valve and a proceeding to form a non return valve system to be fasten together inside a receptacle intended to contain air or liquid
US8870952Dec 6, 2012Oct 28, 2014Ethicon, Inc.Valve assemblies for implantable prostheses and tissue expanders
US20070163652 *Jan 4, 2007Jul 19, 2007Pekar Robert WRelease valve
US20100187463 *Jul 29, 2008Jul 29, 2010Bengt PeterssonNon Return Valve and a Proceeding to Form a Non Return Valve System to Be Fasten Together Inside a Receptacle Intended to Contain Air or Liquid
US20110011673 *Mar 12, 2009Jan 20, 2011Viking Life-Saving Equipment A/Sinflatable unit
EP2405164A1Jul 8, 2010Jan 11, 2012Anheuser-Bush Inbev NVResilient closure for pressure driven dispensing container
WO2009020425A1 *Jul 29, 2008Feb 12, 2009Bengt PeterssonA non return valve and a proceeding to form a non return valve system to be fasten together inside a receptacle intended to contain air or liquid
WO2009112035A1 *Mar 12, 2009Sep 17, 2009Viking Life-Saving Equipment A/SAn inflatable unit
WO2012004223A1Jul 4, 2011Jan 12, 2012Ab InbevResilient closure for pressure driven dispensing container
Classifications
U.S. Classification137/223, 383/58, 137/851
International ClassificationF16K15/20, F16K15/00
Cooperative ClassificationF16K15/202
European ClassificationF16K15/20F