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:
Feb. 08, 1977
Filed:
Jul. 01, 1975
Pierre Patin, Paris, FR;
Agence Nationale de Valorisation de la Recherche (ANVAR), Neuilly-sur-Seine, FR;
Abstract
A lockable articulation for permitting relative angular rotation between a first and a second part, such for example as the body of a three-wheeled vehicle and the rear axle of the vehicle, said articulation comprising a hollow cylindrical drum centered and mounted on one part, e.g. the axle, two cylindrical sector-shaped jaws arranged inside the drum for contacting the inner surface of the drum and with their ends facing each other, at least two facing ends defining dihedral surfaces whose angle is outwardly opening, and means coupled to the other part, e.g. the vehicle body, for spreading the jaws apart into frictional engagement with the drum to lock the other part against rotation relative to the one part, said means including a roller interposed between the drum wall and the dihedral surface of the jaws and a knee lever having two-pivotally connected links one of which is pivotted on the other part and the other of which rotatably supports the roller.