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:
Jan. 03, 1989
Filed:
Jan. 27, 1986
Neal S Franks, Huntington Beach, CA (US);
Other;
Abstract
A hydraulic powered wrench for fastening and unfastening a bolt, or the like, is presented. A wrench comprises a control valve capable of coupling hydraulic fluid to either of two hydraulic conduits, one on each side of a hydraulic piston within a hydraulic cylinder so that the control valve can move the piston linearly. A double ended socket, each end comprising a bolt receiving surface is utilized. Only a single positive drive is coupled to an external female spline and is coupled to rotate the socket in one direction only. A cylinder rod is coupled to and moved linearly by the piston and is pivotally connected to drive rotationally the drive arm via a female clevis wherein the drive arm is coupled to rotate the ratchet thru the positive drive which in turn is coupled to the socket.