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:
Sep. 04, 1984
Filed:
Jul. 22, 1982
Vincent Moore, Mercer Island, WA (US);
American Sterilizer Company, Erie, PA (US);
Abstract
Sealing apparatus seals the opening of a chamber by seating a double lip seal--or a functionally equivalent seal--between the chamber and the door of the chamber when there is an insufficient pressure differential across the seal to seat it properly. The apparatus includes a vacuum pump which evacuates air from the enclosed space defined by the chamber, the chamber door, and the two flexible members of the sealing device to force the sealing device against the chamber and the chamber door. A storage tank can be provided which can be evacuated of fluid to reduce the capacity of the vacuum pump, or to eliminate it altogether when the sealing apparatus is used with a chamber equipped with a vacuum pump.