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:
Feb. 27, 2001
Filed:
Apr. 12, 1999
George Tash, Somis, CA (US);
Abstract
This invention relates to an improved household drain plunger for use with household drains of various shapes and sizes. The head section of the plunger is a pleated bellows consisting of a conical upper section of increasing diameter from top to bottom, and a smaller lower section, also conical, of decreasing diameter from top to bottom. A handle extends from the top of the head section. The bottom end of the plunger consists of three levels of seals depending from the bottom of the head section. The first and bottommost seal is a dual-function seal designed both to fit snugly into a typical kitchen sink drain opening, thereby providing a mechanical seal. This first seal also has a flat bottom comprising an annular ring that can be placed around a small drain hole opening, such as that in a bathroom sink or tub, to provide a pressure/suction seal with the drain opening. The annular ring has a center void which opens to the interior of the bellows. The second seal, disposed between the bellows and the top of the first seal, is designed to fit snugly into a typical garbage disposal opening, thus providing a mechanical seal with the opening. The bottommost bellows pleat comprises the third seal. This third seal forms a pressure/suction seal with the surface surrounding a drain opening, and is also dual-function, as it is used either alone or in conjunction with the second seal, depending upon the size of the drain opening.