Material or article handling – Vertically swinging load support – Grab
Patent
1991-01-24
1992-06-02
Spar, Robert J.
Material or article handling
Vertically swinging load support
Grab
294 8641, 294 88, 403322, 901 29, B66C 142
Patent
active
051182483
ABSTRACT:
In order to obviate the need for exchanging tools, e.g. tongs, together with their drive mechanisms, the quick-action coupling device (4) is provided between a toolholder (3) and the tool (5) and consists essentially of two coupling half shells (9, 10), one of which is fixedly mounted on a rotary spindle (7) supported in the toolholder (3) and drivable if required, and the other of which is fixedly arranged at the toolhead (11); these half shells are radially coupled and then locked. The locking device (21) is designed so that, in the unlocked condition, the rotary drive mechanism (6) of the rotary spindle (7) is blocked. The quick-action coupling device (4) also permits a linear drive action (8, 19) for opening and closing tongs (5a, 5b) or the like, and is capable of transmitting high bending moments and/or torques with simultaneously high transverse and longitudinal forces.
REFERENCES:
patent: 2870929 (1959-01-01), Quayle
patent: 3567208 (1971-03-01), Blatt
patent: 4087010 (1978-05-01), Stormon
patent: 4596415 (1986-06-01), Blatt
patent: 4697472 (1987-10-01), Hiyane
patent: 4990022 (1991-02-01), Watanabe et al.
Spar Robert J.
Underwood Donald W.
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