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:
Dec. 25, 1984
Filed:
Feb. 10, 1983
Carl J Steigerwald, Wauconda, IL (US);
The Kendall Company, Boston, MA (US);
Abstract
A liquid drainage system comprising, a receptacle having a chamber to receive liquid, a depending annular wall defining a valve seat at a lower portion thereof and an opening in the region of the seat, and a retainer assembly extending across the opening and having an aperture extending therethrough in the opening. The system has a valve element of elastic material comprising a disc being sufficiently large to extend across the opening and sealingly engage against the seat peripherally around the wall. The valve element has a stem extending from the disc and being slidably received in the aperture. The stem has a boss spaced from the disc with dimensions larger than the aperture such that the boss maintains the stem in the aperture. The stem has a sufficient length between the boss and disc such that the disc is spaced from the seat when the boss engages against the retainer assembly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile