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. 04, 2012
Filed:
Mar. 05, 2008
Heiko Schreiber, Igersheim, DE;
Heiko Schreiber, Igersheim, DE;
Wittenstein AG, Igersheim, DE;
Abstract
A coaxial gear set, in particular a hollow shaft gear set for industrial drive technology, having high power density, comprising a drive element (), an element (), and an output element, with a gear ratio and a transmission of a drive torque occurring between the drive element () and the output element via a plurality of radially movable tooth segments (), an outer tooth flank contour () of the tooth contour () of the tooth segments () and/or a flank contour () of a gearing () of an inner gearing () of an internal wheel (), relative to a gear axis (M), a tooth contour that allows surface contact in the engagement area comprising a logarithmic spiral.