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:
Aug. 23, 2005
Filed:
Feb. 06, 2003
Applicants:
Dale Robert Kane, San Francisco, CA (US);
Norihisa Minowa, Kanagawa Prefecture, JP;
Kohtaro Takahashi, Saitama, JP;
Inventors:
Dale Robert Kane, San Francisco, CA (US);
Norihisa Minowa, Kanagawa Prefecture, JP;
Kohtaro Takahashi, Saitama, JP;
Assignee:
DuPont Dow Elastomers, LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L017/06 ; F16K015/00 ;
U.S. Cl.
CPC ...
Abstract
The present invention is directed to a valve seal assembly for use in multi-chamber vacuum devices. The seal assembly comprises a door and a deformable seal ring running along the periphery of the door, wherein the seal ring is held in place by a reversibly mounted securing means such as a disk, ring or clamp.