Clamp element, including a rapid feed device combined with a for

Details Clamp element, including a rapid feed device combined with a for Clamp element, including a rapid feed device combined with a for

1992-04-08

1993-03-09

Watson, Robert C.

Work holders

Relatively movable jaws

Means to actuate jaw

B25B 114

Patent

active

051920611

ABSTRACT:
The clamp element includes a rapid feed device combined with a force amplifier. The force amplifier is surrounded by a rotatable feed sleeve, which engages through an external thread in a female thread of a surrounding housing. A first tightening member is fixed and a tightening clamp member is rotatably arranged in the feed sleeve. Two tightening pins are arranged between the two tightening members. The tightening pins are supported on the second tightening member the smallest possible distance from the feed sleeve axis. An actuating and tensioning rod is passed either through a central aperture in the first tightening member (FIGS. 7-11) or through two diametrically opposite, lateral aperture of the first tightening member (FIGS. 1-6). The latter apertures are sufficiently large in the peripheral direction of the feed sleeve to allow a limited rotation of the actuating and tensioning rod relative to the feed sleeve sufficient for the rotation of the second tightening member relative to the first tightening member. On turning the actuating and tensioning rod in the tightening sense, this is first drawn axially into the housing by rotation of the feed sleeve.

REFERENCES:
patent: 3650522 (1972-03-01), Wermuth et al.
patent: 3807721 (1974-04-01), Arnold
patent: 3902707 (1975-09-01), Preisenhammer
patent: 3941362 (1976-03-01), Arnold et al.
patent: 4270398 (1981-06-01), Arnold

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