Articulated-arm supporting member, especially for lamps

Details Articulated-arm supporting member, especially for lamps Articulated-arm supporting member, especially for lamps

1978-07-25

1979-08-21

Schafer, Richard E.

Illumination

Supports

Counterbalanced support

2482801, 2482811, 248585, 362402, 362413, 362418, 362427, F21V 2126

Patent

active

041655303

ABSTRACT:
An articulated arm supporting structure for a lamp is disclosed, in which the combination of three arms with a couple of friction discs and a pull spring is such as to permit the entire arm assembly to be desirably positioned while balancing the entire structure by means of resilient and frictional forces.

REFERENCES:
patent: 1310558 (1919-07-01), Dohy
patent: 2301661 (1942-11-01), Wiedenhoeft
patent: 2498375 (1950-02-01), Moore
patent: 2533963 (1950-12-01), Sacchini
patent: 2570778 (1951-10-01), De Vane
patent: 2911525 (1959-11-01), Strom
patent: 3188460 (1965-06-01), Thorsen et al.
patent: 3253473 (1966-05-01), Chisholm
patent: 3774873 (1973-11-01), Krogsrud
patent: 4080530 (1978-03-01), Krogsrud

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