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:
Jun. 06, 2000
Filed:
Nov. 25, 1997
Applicant:
Inventors:
John M Clarke, Chillicothe, IL (US);
Willibald G Berlinger, Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
60415 ; 60418 ;
Abstract
Hydraulic apparatus including hydraulic supply means and an accumulator with an accumulator piston and a means for sensing the accumulator piston position to indicate a load requirement to a control means to selectively actuate the hydraulic supply means to satisfy the hydraulic load requirement and to provide a relatively pressure pulse-free operation by actuating the hydraulic supply means in response to the position and motion of the accumulator piston.