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:
Jul. 14, 1987
Filed:
Dec. 04, 1985
Applicant:
Inventors:
Gary Krutz, West Lafayette, IN (US);
David L Hansen, Hutchinson, KS (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
91-1 ; 73502 ; 418-2 ; 418 / ;
Abstract
An integral sensor for an hydraulic motor measures speed, torque and rotation displacement produced by the motor by combining pressures produced in pressure chambers of the hydraulic motor as the rotor rotates enabling a pressure sensor to provide a pressure signal defined by at least three states which permits incremental movement of the rotor to be determined. Zero positioning determined by coupling pressure through the rotor to create a unique occurrence reflected in the pressure signal once per revolution.