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:
Apr. 16, 1985
Filed:
Feb. 09, 1983
Applicant:
Inventor:
Carl J Steigerwald, Wauconda, IL (US);
Assignee:
The Kendall Company, Boston, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604323 ; 604335 ; 604350 ;
Abstract
A liquid drainage system comprising, a receptacle having a chamber to receive liquid, and a depending annular wall defining a valve seat at a lower portion thereof and an opening in the region of the seat. The system has a valve element comprising a sheet of flexible relatively stiff material being sufficiently large to extend across the opening and sealingly engage against the seat peripherally around the wall. The system has a device for retaining a central portion of the valve element adjacent the seat.