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:
Jul. 09, 1996
Filed:
Jan. 10, 1994
Manfred Ackermann, Oppenweiler, DE;
Ngoc-Thach Nguyen, Grossbottwar, DE;
Siegfried Schustek, Ditzingen, DE;
Quang-Ngoc Tran, Stuttgart, DE;
Robert Bosch G.m.b.H., Stuttgart, DE;
Abstract
The starter apparatus for an internal combustion engine includes a starter motor; an axially shiftable starting gear engageable with a ring gear of the internal combustion engine; a drive train for transferring rotary motion of a drive shaft of the starter motor to the starting gear, the drive train including a plurality of parts from the starting gear to the drive shaft; a free wheel clutch coupled with the drive shaft of the starter motor; and a shock absorber spring device for damping torque shocks between the starting gear and the drive shaft occurring on operation of the starter and located in the drive train between the starting gear and the drive shaft of the starter motor. According to the invention the shock absorber spring device is prestressed to provide a torque acting in a drive rotation direction equal to from 15 to 50% of the stall torque of the starter motor delivered to the starting gear and a ratio of the torsional rigidity of another drive train equal to the above drive train without the shock absorber spring device and at the stall torque to the torsional rigidity of the shock absorber spring device effective at the starting gear must be at least 4.