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Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage    
United States Patent4728006   
Link to this pagehttp://www.wikipatents.com/4728006.html
Inventor(s)Drobish; James L. (Cincinnati, OH); Taske; Leo E. (Cincinnati, OH)
AbstractA resiliently deformable container having at least one discharge orifice equipped with a self-sealing dispensing valve, said valve having a resiliently deformable, concave shaped portion with its perimeter sealingly secured across the container's discharge orifice. The self-sealing valve is secured across the orifice so that it is inwardly concave when the container is in an undeformed condition. The concave shaped portion of the valve includes at least one substantially linear slit extending through the thickness of the valve. The valve requires the attainment of a threshold opening pressure to effect inversion from a concave at rest position in order to dispense the package contents. By providing a container with sufficient flexibility to permit manual deformation and sufficient resilience to return substantially to its undeformed configuration when the externally applied forces are removed, a void volume equivalent to the amount of fluid material discharged from the package is provided inside the container after removal of the applied forces. This aids in closing the self-sealing valve which, after venting the container to the atmosphere, returns to an inwardly concave, sealed position until sufficiently large external forces are again applied to the container to effect inversion of the valve and consequent material discharge.
   














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Drawing from US Patent 4728006
Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage - US Patent 4728006 Drawing
Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage
Inventor     Drobish; James L. (Cincinnati, OH); Taske; Leo E. (Cincinnati, OH)
Owner/Assignee     The Procter & Gamble Company (Cincinnati, OH)
Patent assignment
All assignments
Publication Date     March 1, 1988
Application Number     06/656,397
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     October 1, 1984
US Classification     222/181.3 137/849 137/859 222/213 222/490 222/494
Int'l Classification     B05B 011/04
Examiner     Rolla; Joseph J.
Assistant Examiner     Shaver; Kevin P.
Attorney/Law Firm     Kelly, Gorman; John V. Linman; E . Witte; Richard C. ,
Address
Parent Case     CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of commonly assigned, copending application Ser. No. 604,782, filed Apr. 27, 1984 in the name of the present applicants and now abandoned.
Priority Data    
USPTO Field of Search     222/213 222/212 222/490 222/494 222/496 222/511 222/491 222/497 222/181 222/96 222/209 222/495 222/180 222/185 222/173 137/846 137/849 137/859 239/602 239/533.13 239/533.14
Patent Tags     flexible container including self-sealing dispensing valve provide automatic shut-off leak resistant inverted storage
   
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