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. 06, 1985
Filed:
Jan. 07, 1983
Poul H Pedersen, Nordborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
The invention relates to a reaction hydraulic control unit for use in steering systems of the type having a differential type servomotor. In steering systems of this type having a differential piston type servomotor there exists a condition during the piston centering operation when the unit is in neutral wherein the servomotor piston has a slower centering speed when the transfer of medium is from the nonrod side to the rod side of the servomotor. The unequal centering times causes annoyance to drivers because that condition is transmitted to the steering wheel. This problem is addressed by providing steering controlled valving for exhausting fluid from the nonrod chamber of the servomotor to the system tank after the control unit has returned to its neutral position and during the centering operation of the servomotor piston.