Work holders – Relatively movable jaws – Means to actuate jaw
Patent
1991-08-19
1992-07-14
Watson, Robert C.
Work holders
Relatively movable jaws
Means to actuate jaw
269235, 269900, B25B 108
Patent
active
051296373
ABSTRACT:
A device for fixing a work in position on a base having a protrusion and a hole formed adjacent the protrusion for mounting the device. The device includes a rotational member mountable in the hole of the base and rotatable around the axis of the hole. The rotational member has a shank insertable into the hole and a head disposed on an upper end of the shank. The head is provided with a lateral surface for pressing the work against the protrusion. The distance from the rotational axis of the rotational member to the lateral surface is varied in a circumferential direction of the head. The rotational member further includes a first engaging portion for engagement with a tool for rotating the rotational member. A threaded hole is formed to extend from the head to the shank along the rotational axis of the rotational member. A screw member is threadably engaged with the threaded hole of the rotational member and has a second engaging portion for engagement with another tool for rotating the screw member. The shank of the rotational member is provided with an expanding mechanism which is operable by the screw member for expanding laterally so as to prohibit rotation of the rotational member in accordane with the axial movement of the screw member.
REFERENCES:
patent: 1685899 (1928-10-01), Andrew
patent: 2430613 (1947-11-01), Hodge
patent: 2560525 (1951-07-01), Nyl
patent: 3473420 (1969-10-01), Boggs
patent: 3986383 (1976-10-01), Petteys
patent: 4157819 (1979-06-01), Meyer
Ito Takayoshi
Kondo Takao
Infom Co., Ltd.
Kabushiki Kaisha Mori Coating
Watson Robert C.
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