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. 18, 1991
Filed:
Dec. 26, 1989
James L Oliver, Pontiac, MI (US);
James A Juriga, Bloomfield Hills, MI (US);
Erlen B Walton, Farmington Hills, MI (US);
David M Preston, Drayton Plains, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
Selectively engagable auxiliary leaf springs (38 or 142) for vertically supporting a vehicle chassis (32) on an axle assembly (22 or 102) in parallel with main suspension springs (34 or 114). In three of the disclosed embodiments, both ends (38b,38a) of the auxiliary leaf springs (38) are pivotally attached. In two other embodiments, one end (142a) of each auxiliary leaf spring (142) is pivotally attached and the other end (142b) is rigidly affixed in cantilever fashion. A manually operated hand crank (60) or ratchet mechanism (87) employed to drive a speed reducer actuator (62) to selectively enable or increase load supporting of the auxiliary leaf springs.