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. 21, 1984
Filed:
Jul. 29, 1981
Christian B Hansen, Nordborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
The invention relates to a hydraulic pump or motor having inlet and outlet ports and expansible chamber section at one end thereof, which may be a gerator gear set, and a drive shaft at the other end thereof. A distributor valve driven by the drive shaft and having a central bore directs fluid between the inlet and outlet ports in the housing and the expansible chamber section. A shaft, such as a cardan shaft, disposed in the central bore of the valve provides a driving connection between the valve and the expansible chamber forming section. Although a bearing is provided in the housing for the drive shaft, the distributor valve is also subjected to radial loads because the cylindrical surface thereof has a close fitting sealing relationship with the housing bore in which it is rotatably disposed. Lubrication for both ends of the cylindrical surface of the valve is provided by passages extending from valve passages which carry the motive fluid controlled by the valve.