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:
May. 20, 1986
Filed:
Nov. 28, 1984
Istvan Ragaly, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To facilitate manufacture and increase the lifetime of a speed-dependent coupling between the ventilation or fan wheel (23) and drive shaft (18, 21) of the alternator, an inner race (25) is secured to the drive shaft, formed with two parallel running grooves (26, 27) in which two rows of balls (28, 29) are rolling. A pair of outer races is formed as ring-shaped elements (30, 31), of part-circular cross section, surrounding opposite, at least approximately quarter-circular zones of the balls, the outer races being axially biased towards each other by a pair of disk-shaped membranes (34, 35) to which the ventilation fan wheel (23) is attached, the membranes being biased towards each other by a biasing force (F), for example exerted by axial screws, securing the disk-shaped membranes together for resiliently biasing the ring-shaped elements towards each other and exerting axial pressure on the balls (28, 29) running in the grooves of the inner race and beneath the outer races. Sealing strips (50, 51, 52) can be placed between the membranes to prevent escape of lubricant of the coupling.