Jointed tool

Details Jointed tool Jointed tool

1981-07-13

1983-11-15

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

B25B 1300

Patent

active

044148674

ABSTRACT:
Jointed tool having an upper portion which is rotated manually or by non-manual power means, a lower portion which rotates and has a work-piece contacting tool element, e.g., nut-gripping socket, screw driver point, drill bit, and the like, and a pin-mounted gimbal joint connecting the upper and lower portions thereof with the adjacent walls of the elements in the gimbal joint abutting each other during rotation to reduce torque applied to the gimbal joint pins, allowing thereby the lower portion to operate on work pieces at angles offset up to and over 40 degrees from their axes with minimum wear on the gimbal joint elements. In another embodiment the lower portion is merely a shaft transmitting rotation to another member, e.g., a universal joint of a vehicle, and the gimbal joint is enclosed allowing the same to be internally self-lubricating.

REFERENCES:
patent: 868454 (1907-10-01), Korth
patent: 1300148 (1919-04-01), Evans
patent: 1361130 (1920-12-01), York
patent: 1875376 (1932-09-01), Hammer et al.
patent: 2796619 (1957-06-01), Hammer
patent: 2964980 (1960-12-01), Riley et al.
patent: 3663044 (1972-05-01), Contreras et al.

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