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. 20, 1999
Filed:
Sep. 08, 1997
Edward Szpara, St. Charles, IL (US);
Sarah L Corbin, Hawthorn Woods, IL (US);
James C Richardson, Schaumburg, IL (US);
Lewis E Daniels, Jr, Wonder Lake, IL (US);
Baxter International Inc., Deerfield, IL (US);
Abstract
A valve assembly for permitting fluid flow in a first direction and for preventing fluid flow in a second direction opposite to the first direction. The valve assembly includes an upper housing, a lower housing coupled to the upper housing to form a generally axially extending housing assembly, and a valve seating section defined within an inner peripheral portion of the lower housing. The valve seating section includes an axially extending inner peripheral surface and a transversely extending surface substantially normal to the axially extending inner peripheral surface. A valve member is seated within the valve seating section of said lower housing. The valve member includes a flange that extends from the valve member in a transverse direction and defines an axially oriented outer peripheral surface thereof. The valve member is retained within the valve seating section of the lower housing by the axially extending inner peripheral surface of the valve seating section transversely compressing the axially oriented outer peripheral surface of the flange to form a press-fit therebetween. Further, the valve member also includes a lower transverse surface which is axially separated from the transversely extending surface of the valve seating section, in which an air space is defined between these two transverse surfaces.