Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1998-08-25
2000-01-04
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5713, B25B 1700
Patent
active
060097760
ABSTRACT:
A right angle ratchet wrench drive unit comprised of a drive unit formed in an L-shaped orientation. The drive unit has a first end and a second end each having recesses. Each recess has an axis positioned at a ninety degree angle with respect to each other. The second recess has an internal cylindrical recess extending coaxially inwardly of its inboard end. The internal cylindrical recess has a pair of diametrically opposed spring-biased detents therein. First and second gear assemblies are positioned within the recesses. Each gear assembly includes a bevel gear having teeth and a central shaft. Each central shaft is formed in a generally cylindrical configuration with an inner end and an outer end. The outer end of the central shaft of the second gear assembly has a shoulder portion disposed thereon. The shoulder portion has a gear post extending coaxially therefrom. The bevel gear of the second gear assembly is positioned around the gear post. The bevel gears are received within the respective first and second recesses with the gear post being positioned within the internal cylindrical recess and engaged by the spring-biased detents. In a fully assembled orientation, the teeth of the bevel gears are positioned in a meshing relationship with respect to each other. A drive shaft is coupled to the outer end of the central shaft of the second gear assembly. The drive shaft is couplable within a socket.
REFERENCES:
patent: 2694953 (1954-11-01), Williams
patent: 2716363 (1955-08-01), Wasylow
patent: 4455896 (1984-06-01), Holmes
patent: 4620458 (1986-11-01), Schmidek
patent: 4813308 (1989-03-01), Petrus
patent: 4913007 (1990-04-01), Reynolds
patent: 5752418 (1998-05-01), Robins
Smith James G.
Wilson Lee
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