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:
Feb. 11, 1992
Filed:
Feb. 07, 1991
Kenji Masuda, Settsu, JP;
Daikin Industries Ltd., Osaka, JP;
Abstract
An axial piston machine which has an even number of piston cylinder chambers housing therein pistons in relation of being movable in reciprocation respectively so as to control a stroke of the piston by a swash plate, wherein first and second compensating pistons opposite to the swash plate are provided at the symmetrical positions with respect thereto in the vicinity of the upper dead and lower dead points inclusive, so that, when one piston cylinder chamber is positioned in the vicinity of the upper or lower dead point, control pressure at the pressurized side is introduced to the second compensating piston at the lower dead point side, or that at the pressure-reduction side to the first compensating piston at the upper dead point side, thereby reducing an exciting force caused by an abrupt pressure change in the piston cylinder chamber and a large variation in the inclined moment of the swash plate, so as to enable reduction in generation of vibrations and noises.