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, 2001
Filed:
Jun. 14, 2000
Chung-Yang Lin, Hsin-chu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Abstract
A cover assembly that is equipped with a pivotable handle for sealing a vacuum conduit opening is provided. The cover assembly is constructed generally by a cover body and a pivotable handle resting in a recess in a top surface of the cover body. The cover body is constructed by an upper annular portion and a lower annular portion integrally formed or joined together. The upper annular portion has an outside diameter that is larger than an outside diameter of the conduit opening, while the lower annular portion has an outside diameter that is smaller than an inside diameter of the conduit opening for sealing the conduit opening when the lower annular portion of the cover body is inserted into the conduit opening, a bottom surface of the upper annular portion sealingly engages the end surface of the conduit opening. The upper annular portion may further include a recess in a top surface for concealing the pivotable handle therein. The pivotable handle of generally elongated rectangular shape has an elongated slot opening formed therethrough in a longitudinal direction. A finger grip is provided at one end of the handle such that when the elongated slot opening slidingly engages a pin mounted in a horizontal position in the recess, the handle rests horizontally in the recess when not in use, and stands vertically in the recess when pulled up by a sliding engagement between the elongated slot opening and the horizontally mounted pin.