Telescoping crane

Details Telescoping crane Telescoping crane

1987-07-14

1990-03-13

Chin-Shue, Alvin C.

Supports

Stand and bracket

Having adjustable bracket

2482801, 212197, B66C 2372

Patent

active

049077686

ABSTRACT:
A crane having a plurality of telescoping beams for supporting and positioning a camera or the like. The crane includes a counterweight structure which balances the crane about its fulcrum point. As the beams of the crane telescope outward, the movement of the counterweight structure is controlled so as to move in the opposite direction relative to the fulcrum point to substantially maintain a balanced crane.

REFERENCES:
patent: 669232 (1901-03-01), Case
patent: 799625 (1905-09-01), Berthelot
patent: 1877373 (1932-09-01), Cohen
patent: 1913040 (1933-06-01), Pierson
patent: 2368268 (1945-01-01), Spiegel
patent: 2893299 (1959-07-01), Moir
patent: 2978115 (1961-04-01), Bestel
patent: 3750895 (1973-08-01), Durand
patent: 3788585 (1974-01-01), Massenon
patent: 3947144 (1976-03-01), Elliot
patent: 4231551 (1980-11-01), Ikeda
patent: 4648647 (1987-03-01), Patton

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