Clamping device for crane or the like

Details Clamping device for crane or the like Clamping device for crane or the like

1991-04-18

1992-03-10

Peters, Jr., Joseph F.

Traversing hoists

With haul-in line

212151, 403328, B66C 1318

Patent

active

050943537

ABSTRACT:
The disclosure herein describes a clamping device to be mounted to an elet of a crane and which provides contact surfaces for limit switches that maintain the movement of a movable crane structure within predetermined limits. The clamping device defines a body having a top wall which is contacted by the limit switches and a side wall which cooperates with a plunger to clamp the device to the crane element. The plunger is spring-biased so that its head applies constant pressure against the crane element. The housing, in which the plunger is contained, includes a handle which acts as a lever to compress the spring to allow retraction of the head from the crane element and quick removel of the clamping device from the crane element.

REFERENCES:
patent: 895646 (1908-08-01), Ladd
patent: 1841008 (1932-01-01), Burn
patent: 3285430 (1966-11-01), Whitmire
patent: 3456810 (1969-07-01), Ely
patent: 3572784 (1971-03-01), Pansini
patent: 3664515 (1972-05-01), Orendorff et al.
patent: 3926418 (1975-12-01), Blatt
patent: 4085856 (1978-04-01), Westendorf
patent: 4243342 (1981-01-01), Marto
patent: 4635327 (1987-01-01), Netznik

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