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. 28, 1988
Filed:
Apr. 27, 1987
Claude Chevance, Savigny, FR;
Rockwell-CIM, , FR;
Abstract
Device comprising a screw (6) and a nut (8) subjected to an axial force which alternates in opposite directions, the thread (7) of the screw having a given helix angle and a given pressure angle which are so chosen that, in a first direction, termed reversible direction, the screw (6) is capable, under the axial thrust exerted in this direction by a spring (20), of effecting a translation and a rotation in the nut (8), and that, in a second direction, termed irreversible direction, opposed to the first direction, the screw undergoing an axial thrust in this second direction by a push-member (9), can effect neither a translation nor a rotation in the nut. This assembly may be applied to the automatic taking up of play of systems subjected to alternating longitudinal forces, such as shafts of electric motors or cable controls.