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:
Jan. 09, 2007
Filed:
Feb. 18, 2005
Reinhardt Thoms, Neumunster, DE;
Bernd Hames, Henstedt-Ulsburg, DE;
Markus Reimer, Klein Nordende, DE;
Reinhardt Thoms, Neumunster, DE;
Bernd Hames, Henstedt-Ulsburg, DE;
Markus Reimer, Klein Nordende, DE;
Sauer-Danfoss, Inc., Ames, IA (US);
Abstract
In the housingof a hydraulic machine, the pressure Pi acts in the chamber. For this purpose, a passage openingis provided, which is formed as a valve seat. A valve bodycan be displaced longitudinally in the housingand forms a pressure-tight spring chamber for an inner valve spring. The spring chamber is connected to the chambervia a pressure equalizing hole. The prestress of the inner valve springcan be set by means of a setting screw. In addition, there is an outer valve spring. Both the valve springs load the valve bodywith the effect of closing it. The pressure equalizing valve described combines a compact design with an advantageous flow characteristic. When a maximum value of pis reached, the valve bodylifts off the valve seatand hydraulic fluid from the chamberflows away via the valve chamber