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:
Jun. 13, 1989
Filed:
Nov. 12, 1987
Frederick J Adams, Clevedon, GB;
TRW Cam Gears Limited, Clevedon, GB;
Abstract
Power assistance mechanism for a rack and pinion steering gear assembly and an assembly which includes such mechanism includes a main rack and pinion steering gear 1 mounted on which is an auxiliary rack and pinion unit 9. The unit 9 includes an auxiliary rack bar 11, the rack of which engages with an auxiliary pinion in an auxiliary housing 10. The auxiliary pinion is rotatable by an electric motor 23 in the housing 10 to drive the auxiliary rack bar 11. The housing 10 is bolted through brackets 14 to the housing 2a of the main gear 1 while the auxiliary rack bar is coupled through a bracket 16 to the rack bar of the main gear 1. The electric motor 23 is controlled by a switch 27 in the steering input 7 to the pinion of the main steering gear 1 so that when the main rack bar is driven by rotation of the main pinion, the switch 27 is actuated to energize the electric motor and drive the auxiliary rack bar 11 in a sense appropriate to assist the displacement of the main rack bar.