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:
Dec. 14, 1982
Filed:
Jan. 14, 1980
Applicant:
Inventors:
Erich Eichele, Schwab Gmund, DE;
Winfried de Maight, Mutlangen, DE;
Assignee:
Zahnradfabrik Friedrichshafen, AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417273 ; 417313 ;
Abstract
A surge chamber hydraulically connected between the outlet of a radial piston pump and the internal chambers of the piston plungers, cooperates with a second fluid storing surge chamber in the pump housing through connecting passages to dampen vibrations produced by pump flow fluctuations to reduce non-uniform flow and the noise level during pump operation under a wide range of pressures and speeds.