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:
Jul. 05, 2005
Filed:
Nov. 15, 2002
William A. Peper, Maplewood, MN (US);
William A. Peper, Maplewood, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A one-way valve is formed by connecting a third layer of a polymeric film to one of two film layers that are sealed about the perimeter to form an inflatable member. A series of spaced seals connect the third layer so as to form a serpentine flow path across the inflatable member. The serpentine flow path communicates at one end with an inlet and at an opposite end with an outlet in communication with an interior of the inflatable member. Inflation pressure within the inflatable member forces together the adjacent film layers forming the one-way valve so as to maintain the inflatable member in an inflated state.