Extension tool

Details Extension tool Extension tool

1981-01-05

1983-02-22

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

74421R, 74467, B25B 1700

Patent

active

043744800

ABSTRACT:
An extension wrench for transmitting a torque to a fastener with restricted access, where conventional wrenches are not practical to use because of lack of clearance for the angular movement of the conventional wrench. The extension wrench comprises an elongated frame, housing a driven gear at one end, a driving gear at the opposite end and a meshing gear train between the driving and driven gears which transmits torque from the driving gear to the driven gear. The gears have no shafts for support but are supported on their external diametral surfaces by close fitting circular recesses in the elongated frame. The driving and driven gears have multi-faceted recesses to accept (standard square or hexagonal cross section) commercially available tools. The planform of the wrench is substantially rectangular or arcuate. Lubrication means is provided for servicing the wrench.

REFERENCES:
patent: 2830479 (1958-04-01), Finn
patent: 4063475 (1977-12-01), Perkins

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