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. 07, 1984
Filed:
Nov. 20, 1981
Applicant:
Inventor:
Lambertus J Sonneborn, Oldenzaal, NL;
Assignee:
Applied Power Inc., Milwaukee, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F15B / ;
U.S. Cl.
CPC ...
60433 ; 91467 ; 417442 ;
Abstract
Disclosed is a compact rotating hydraulic drive comprising (a) a housing, (b) a pumpshaft mounted in the housing for both linear translational and rotational movement, (c) a plurality of pumping units operated by rotational motion of the pumpshaft, (d) a valve spool mounted on the pumpshaft but rotatable relative to the pumpshaft, and (e) means selectively operative upon linear translation of the pumpshaft to rotate the valve spool back and forth between a first angular position in which the output of the pump is directed in one manner and a second angular position in which the output of the pump is directed in another manner.