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:
May. 06, 1980
Filed:
May. 04, 1978
Applicant:
Inventors:
Assignee:
Taisan Industrial Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23N / ; F04B / ;
U.S. Cl.
CPC ...
417311 ; 1231 / ; 138 31 ; 417540 ; 431 38 ;
Abstract
A pump has a boost-retarding device which comprises a cylinder communicating between the suction side and the discharge side of the pump. A plunger slidably and reciprocatingly fits into the cylinder and a lead passage communicates between the suction side and the discharge sides which are divided by the plunger. An adjustable spring biases the plunger toward the discharge side, and a valve mechanism cuts off the outflow of a liquid, from the discharge side to the suction side, which outflow occurs responsive to a movement of the plunger toward the suction side.