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. 14, 1985
Filed:
Dec. 23, 1983
Gerhard Pfluger, Markgroningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To limit the maximum speed of the fan blade of an automotive-type alternator, the fan blade (21) is secured to the outer race (23) of a ball bearing (22) having a two-part inner race (24, 25), one of the parts being an axially slidable sleeve (25) which is spring-pressed by a cup spring (26) in engagement with a drive pulley (18) against the first race (24). Until a certain limiting reactive pneumatic force or frictional force is reached, the cup spring (26) will clamp the balls (22) between the inner and outer races, so that the fan blade (21) will rotate with the pulley; when the reactive force and speed are exceeded, however, the fan blade can rotate about the balls (22), and hence slip with respect to the rotation of the pulley (18).