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:
Jun. 18, 2002
Filed:
Jun. 13, 2001
Applicant:
Inventors:
Brian R. Tranter, High Wycombe, GB;
Michel Villeneuve, Vieille-Eglise, FR;
Assignee:
PerkinElmer, Inc., Wellesley, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 5/504 ;
U.S. Cl.
CPC ...
F16L 5/504 ;
Abstract
An accumulator including a housing with a gas chamber and a liquid chamber therein. A primary piston is moveable in the housing and connected to the housing by a primary bellows sealing the gas chamber with respect to the liquid chamber. A secondary piston is moveable with respect to the primary piston and connected to the primary piston by a secondary bellows sealing the secondary piston with respect to the primary piston.