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. 12, 1988
Filed:
Mar. 13, 1987
Kanji Kubo, Wako, JP;
Kenichi Ohno, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Saitama, JP;
Abstract
Disclosed is a rear wheel suspension device for a front and rear wheel steering vehicle wherein rear wheels are steered in an opposite phase relationship relative to the front wheels at least under a certain condition. The structure of the suspension for the rear wheels is so determined that a caster angle of each of the rear wheels relatively sharply increases as the distance between the vehicle body and the rear wheel is increased from a neutral state and maintains a smaller positive value as the distance between the vehicle body and the rear wheel is decreased from the neutral state. This can be accomplished by pivotably connecting the knuckle for each of the rear wheels by an upper arm and a lower arm to the vehicle body, respectively, and a rotational axial line of the upper arm inclines downward at its forward portion while the rotational axial line of the lower arm extends substantially parallel to the length of the vehicle. Preferably, the rotational axial line of the upper arm additionally inclines inward at its forward portion. Thus, the force required to maintain a certain steering angle changes smoothly as the steering angle is increased and at the same time the tendency of the rear wheels to take a straight course is maintained.