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:
Aug. 15, 2017
Filed:
Mar. 15, 2012
Applicants:
Jarmo Harsia, Chicago, IL (US);
Roger Lowman, Simpsonville, SC (US);
Germano Franzoni, Prairie View, IL (US);
Inventors:
Jarmo Harsia, Chicago, IL (US);
Roger Lowman, Simpsonville, SC (US);
Germano Franzoni, Prairie View, IL (US);
Assignee:
Parker Hannifin Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/04 (2006.01); E02F 9/22 (2006.01); E02F 3/38 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2207 (2013.01); E02F 3/384 (2013.01); F15B 2211/45 (2013.01); F15B 2211/853 (2013.01);
Abstract
A cushioned swing circuit provides the reduction of oscillation common in the operation of heavy equipment such as with boom members. The circuit utilizes a transfer of high pressure fluid flow (caused by the inertial of the swing during rapid deceleration) from one leg of the circuit to the other leg of the circuit or to the sump which serves as decompression for the oil that would ordinarily be trapped in the leg. These phenomena create the swing cushioning effect.