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. 03, 1984
Filed:
Jun. 02, 1981
Applicant:
Inventors:
John M Stewart, Ontario, CA;
Clifford B Hewson, Horseshoe Bay, CA;
Assignee:
Sanitation Equipment Limited, Downsview, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E03D / ;
U.S. Cl.
CPC ...
4321 ; 4315 ; 4471 ; 251147 ; 251204 ;
Abstract
A portable toilet having an improved valve arrangement for minimizing abrasion of the holding tank inlet seal. The valve arrangement includes a valve member which moves generally normal to a sealing plane defined by the seal when the valve is opened or closed. A wiper element is disposed adjacent the holding tank inlet and is positioned to exert a wiping action on the sealing surface of the valve member when the valve is operated.
Stewart, John. (1984). Toilet (U.S. Patent No. 4439875). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4439875
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile