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. 05, 1985
Filed:
May. 02, 1983
Robert W Gronbech, Sheffield, GB;
Michael Lister, Sheffield, GB;
Davy McKee (Sheffield) Limited, Sheffield, GB;
Abstract
A hydro-mechanical actuator for adjustably positioning a part, for example a roll carriage of a vertical roll mill stand, is described in which an actuating member having a pusher is mechanically driven to approximate a desired position and then is adjustably displaced by a hydraulic mechanism. The actuator member has a threaded portion which engages a threaded nut secured against rotation by keys; hance rotation of the actuating member will cause its axial displacement. Rotation of the actuating member is by a driving splined sleeve which engages a splined portion of the actuating member. The hydraulic mechanism includes a piston which engages with the threaded nut which can move axially with the actuating member, so that the position of the actuating member, and pusher, can be adjusted by controllably varying the pressure applied to either side of the piston in the cylinder.