Chucks or sockets – Socket type – Obliquely guided reciprocating jaws
Patent
1979-10-05
1981-09-08
Bilinsky, Z. R.
Chucks or sockets
Socket type
Obliquely guided reciprocating jaws
81 90A, 279 1K, 279 62, B23B 3106
Patent
active
042880840
ABSTRACT:
A tubular chuck collar with a plurality of teeth circumferentially arranged around the base thereof to form a toothed track is fitted over the inner cylinder of a conventional chuck assembly in spaced relationship to the outer cylinder of the chuck assembly such that the toothed track of the chuck collar opposes the conventional toothed track on the outer cylinder. A securing means releasably secures the collar to the inner cylinder. The toothed track of the chuck collar includes at least one section oriented at an incline relative to the toothed track on the outer cylinder, whereby a bladed instrument such as a screwdriver may be inserted into the gap between the collar and the outer cylinder to simultaneously engage the teeth in both toothed tracks. The screwdriver so inserted is twisted about its longitudinal axis to simultaneously apply opposing torques to the collar and the outer cylinder. The torque on the collar is transferred through the securing means to the inner cylinder, which is caused to rotate relative to the outer cylinder to open or close the chuck jaws as desired. The chuck collar also includes a slot formed in the side thereof in alignment with one of the conventional chuck key pivot holes in the inner cylinder. A conventional chuck key may be inserted into the pivot hole to engage the teeth in the toothed track on the outer cylinder, and may thereafter be used to operate the chuck jaws in a conventional manner.
REFERENCES:
patent: 2451565 (1948-10-01), Landon
patent: 3861693 (1975-01-01), Huber
patent: 4095811 (1978-06-01), Cohen
patent: 4097054 (1978-06-01), Derbyshire
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