The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 1991
Filed:
Jan. 09, 1990
Paul E Brown, Midland, MI (US);
Liquid Molding Systems, Inc., Midland, MI (US);
Abstract
A self-sealing valve is provided for fluid dispensing packages and the like, of the type which are compressed and decompressed to dispense therefrom liquids, pastes, powders and other similar flowable materials. The valve has a marginal groove extending along one face thereof in a closed pattern to define a central area inside the groove, and an outer area outside the groove. Ribs extend between the center and outer areas of the valve to bridge the groove, and selectively support the center valve area in a trampoline-like fashion. A slit extends through the center valve area, and into at least a portion of the groove to form an orifice that shifts between outwardly open, closed, and inwardly open positions in response to compressing and decompressing the container.