Device for slinging a piece with stress compensation and...

Details Device for slinging a piece with stress compensation and... Device for slinging a piece with stress compensation and...

2011-07-19

2011-07-19

Kramer, Dean J (Department: 3652)

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Resilient suspension means

C294S074000

Reexamination Certificate

active

07980610

ABSTRACT:
A slinging device for a piece includes a sling with a nonextensible part and a section with a spring device, enabling an elastic lengthening or shortening of the sling under load by a limited amplitude in response to a limited change in the load on the piece, the device including a frame and a floating support, the spring device holding the floating support in the absence of application of force to the piece along a vertical axis, in a position of equilibrium centered vertically with respect to the frame under the weight of the piece, and a way for regulating and adapting the position of equilibrium of the floating support depending on the weight of the piece.

REFERENCES:
patent: 1803721 (1931-05-01), Minor
patent: 2283354 (1942-05-01), Dalzell
patent: 2500459 (1950-03-01), Hoover et al.
patent: 2860908 (1958-11-01), Peterson
patent: 3512657 (1970-05-01), Chambers
patent: 3792787 (1974-02-01), Maloney
patent: 4121806 (1978-10-01), Iato et al.
patent: 4724970 (1988-02-01), Kuhn
patent: 4930828 (1990-06-01), Rerat
patent: 2814449 (2002-03-01), None
patent: 2002167161 (2002-06-01), None
Patent Abstracts of Japan, vol. 2002, No. 10, Oct. 10, 2002.

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