Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1977-05-06
1979-02-27
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
B25B 1346
Patent
active
041412621
ABSTRACT:
The specification discloses a remote operated wrench whereby a squeezable handle connected to a ratchet via a flexible cable imparts a torque to a drive. The ratchet and drive are carried by a housing. A guide extending from the housing receives a flexible cable which imparts a torque to a movable arm pivotally mounted on the housing and extending therefrom. A pawl is pivotally mounted on the arm and extends therefrom so that it engages and turns the ratchet wheel when the arm is rotated in one direction, but slips freely over the wheel when the arm is rotated in the opposite direction. A drive is provided on both sides of the ratchet wheel for a gripping means such as a socket or stud to grip a workpiece. A strut also extending from the housing restrains movement of the housing when the arm engages the ratchet wheel. The flexible cable engages the arm and pivots it toward the guide when the squeezable handle is compressed. A spring acting between the guide and arm returns the movable arm to its rest position after the tension in the cable is relaxed. The cable is carried in a flexible housing having one end anchored in the guide, the other in the squeezable handle. When compressed, the squeezable handle strains the cable thereby imparting a torque to the arm which engages the ratchet wheel and drive.
REFERENCES:
patent: 2637233 (1953-05-01), Hoffman
patent: 2726563 (1955-12-01), Blackburn
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