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:
Sep. 28, 2004
Filed:
Aug. 29, 2002
Rainer Stölzer, Neu-Ulm, DE;
Brueninghaus Hydromatik GmbH, Elchingen, DE;
Abstract
An axial piston engine ( ), including a housing ( ) in whose inner compartment ( ) a cylinder drum ( ) and a swash plate ( ) located axially adjacent thereto are situated. Several piston bores ( ), which extend approximately parallel to the central axis of the cylinder drum ( ) are located in the same, pistons ( ) being displaceably guided in the piston bores. The ends of the pistons facing towards the swash plate ( ) are supported on the swash plate ( ). A driving shaft ( ) is rotatably mounted in the housing ( ) and is connected to the cylinder drum in a fixed manner secured against rotation therebetween by a multitooth coupling ( ) comprising teeth ( ) and tooth spaces ( ) which alternate regularly in a peripheral direction and which engage with each other. At least one feedthrough channel ( ) which extends essentially parallel to the axis of rotation of the drive shaft ( ) and from one side of the multitooth coupling ( ) to the other is located in the area of the multitooth coupling ( ). Obtained is a flow feedthrough and/or a mechanical feedthrough from one side of the multitooth coupling to the other while ensuring that the multitooth coupling is stable and simple to produce. To this end the feedthrough channel ( ) is located between at least one tooth crown or tip surface (43 ) and a tooth space bottom ( ) located opposite thereto.