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:
Nov. 30, 1999
Filed:
Jul. 10, 1998
Chang-su Lim, Kyungki-do, KR;
Hyun-joon Kim, Kyungki-do, KR;
Youn-soo Han, Kyungki-do, KR;
Kun-hyung Lee, Kyungki-do, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An auxiliary device is used in the exchanging of a filter in a clean room having a production section, and a filter frame including a filter-supporting portion which supports the filter and an extending portion which extends from the filter-supporting portion toward the production section. The auxiliary device includes a block plate to be inserted in the extending portion of the filter frame, a support supporting the bottom of the block plate and facing an inside wall of the second portion of the filter frame, and an inflatable tube disposed along the circumference of the support. The tube is inflated to press outwardly and seal the device in the filter frame, thereby blocking the flow of any unfiltered air past the filter and into the production section. Thereafter, the filter is removed and a new filter is set in its place. Finally, the tube is deflated so as to free the device from the filter frame. Accordingly, the production operation as well as the circulation of cleaning air can proceed while the filter is being exchanged.