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:
Oct. 28, 2003
Filed:
Apr. 20, 2000
Wei-Cheng Lee, Panchiao, TW;
Biing-Huang Yang, Hsin Chu, TW;
Long-Chun Tsai, Hsin-Chu, TW;
Ming-Tzung Hsu, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd, Hsin Chu, TW;
Abstract
Within an apparatus for storing a liquid, there is first included a storage tank. The storage tank has formed integral thereto and in fluid communication therewith a liquid inlet port and a liquid outlet port. The storage tank also has formed integral thereto and in fluid communication therewith a gas inlet port and a gas outlet port. Finally, the gas outlet port has connected thereto and in fluid communication therewith a floating plug valve. The floating plug valve comprises a first plug movably positioned over and sealing a first aperture within the floating plug valve such that a first weight of the first plug and a first area of the first aperture define an upper operating pressure of a gas introduced into the storage tank through the gas inlet port. The apparatus of the present invention also contemplates a floating plug valve employed within the apparatus of the present invention.