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:
Jan. 01, 1991
Filed:
Jul. 25, 1989
Applicant:
Inventors:
Kenji A Kingsford, Devore, CA (US);
Anthony K Chan, Alhambra, CA (US);
Assignee:
Osmonics, Inc., Minnetonka, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; S18E / ;
U.S. Cl.
CPC ...
417 63 ; 417397 ; 340605 ;
Abstract
A bellows-type pump has a plastic bellows interiorly supported by interior pressure. The interior pressure is supplied by a fluid source which passes through a pressure regulator to control the amount of interior pressure exerted on the bellows. A fiber-optic leak detector can be inserted into the plastic bellows to detect the leakage of process fluid therein.