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:
Apr. 30, 1991
Filed:
Oct. 11, 1989
Josef Speiser, Wasserburg, DE;
Wankel GmbH, Berlin, DE;
Abstract
A rotary piston internal combustion engine of trochoidal type of construction with dual-arc or curved mantle runway or inner surface and at least one triangular piston having corners thereof in continuous sliding engagement with the inner runway or surface, such piston being journalled by roller bearings and regulated or controlled by a synchronization gear transmission. An oil-collector groove, channel or trough is provided on the shaft on a side remote from the or synchronization gear transmission. Bores in the eccentric lead from the oil-collector groove, channel or trough to the bearing of the piston and the smallest or most nominal oil quantities or volume for lubrication of such bearings, for lubrication of the synchronization gear transmission as well as the sealing parts of the piston, are provided extending in the eccentric.