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:
Mar. 25, 1980
Filed:
Aug. 14, 1978
Chang-Ling Tsuei, Los Angeles, CA (US);
Price-Pfister Brass Mfg. Co., Pacoima, CA (US);
Abstract
An escutcheon plate for the bath overflow fitting conventionally mounts a trip lever for operating the bath drain plug. The center of the lever is pivoted on the escutcheon plate to provide an outer handle end and an inner crank end. The outer handle end is tilted up or down to open or close the drain plug. A spring arrangement stabilizes the lever in both positions, the central position being unstable. A simple wire spring is attached at opposite ends to the lever and a fulcrum located inwardly of the pivot axis of the lever. The spring acts as a toggle, being compressed to a maximum when its points of attachment are in line with the lever pivot axis. A bistable arrangement is provided in the simplest possible manner.