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:
Dec. 11, 2012
Filed:
Aug. 16, 2007
Claus Disser, Seligenstadt, DE;
Claus Disser, Seligenstadt, DE;
Shaft-Form-Engineering GmbH, Mühlheim, DE;
Abstract
A displacement unit comprising a tubular outer part on an inner surface of which outer paths are provided. An inner part displaceable in the tubular outer part in axial direction, on whose exterior surface inner paths are provided and a plurality of balls guided in a cage, the balls respectively located in outer and inner paths that are associated with each other in pairs. The tubular outer part and/or the inner part provided with cage guide paths between at least some of the paths for axial guiding the cage. A quantity of the cage guide paths is smaller than the quantity of pairs of paths formed by the outer and inner paths. The cage may comprise a plurality of integral guide path protrusions that engage the cage guide paths.