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:
Mar. 06, 1984
Filed:
Jul. 29, 1981
Carl V Ohrberg, Nordborg, DK;
Gunnar L Hansen, Nordborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
The invention relates to a hydraulic planetary piston motor of the type having an externally serrated pinion gear which meshes with an internally serrated ring gear and has rotatable and orbital movement relative thereto. The unit has plate type distributor valving with fixed and moveable members and a piston, subject to control pressures on both sides thereof, for biasing the moveable valve member into sealing engagement with the fixed valve member. A change-over valve which may be pressure controllable functions to either cause biasing of the piston to effect the sealing mode or to relieve the biasing to cause a separation of the valve members to effect a short circuiting unloading thereof.