Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1985-10-28
1986-12-02
Marbert, James B.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
294106, B25B 504
Patent
active
046260145
ABSTRACT:
A gripper having at least two gripper arms (1, 3) which are arranged mirror-symmetrically around a center line (5) and a first end (7, 9) of which follows approximately a straight line (19) which is perpendicular to the center line (5), while the second end (21, 23) is displaceable along a circular track (33, 35). A gripper arm (1, 3) is supported between the first end (7, 9) and the second end (21, 23) in a rotatable sliding guide (41, 43) occupying a fixed position with respect to the center (29, 31) of the respective circular track (33, 35). The dimensions of the gripper mechanism described are such that a minimum tolerance of the position of the first ends (7, 9) parallel to the center line (5) is obtained. The gripper requires a considerably reduced calculation capability from the processor to be used for positioning the gripper arms (1, 3).
REFERENCES:
patent: 4452479 (1984-06-01), Terai et al.
patent: 4504211 (1985-10-01), Masserang
patent: 4569549 (1986-02-01), Nakashima et al.
De Leeuw Petrus H.
Van Gerwen Johannes W. C. M.
Vleeskens Franciscus T.
Vredenbregt Jakob
Marbert James B.
Mayer Robert T.
U.S. Philips Corporation
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