Movable stand, particularly for lampholders and lamp carrier the

Details Movable stand, particularly for lampholders and lamp carrier the Movable stand, particularly for lampholders and lamp carrier the

1978-02-16

1980-07-15

Engle, Samuel W.

Illumination

Supports

Standard-type support

362373, 362389, 362402, F21S 112, F29V 2900, F21V 2100, F21V 2118

Patent

active

042131723

ABSTRACT:
Movable stand for lampholders comprising an articulated parallelogram member associated with one end to a supporting base and carrying, at the other end, a lampholder. In order to balance the articulated parallelogram friction means are provided acting on a rod member of the articulated parallelogram. The friction means comprise a pair of shoes, arranged opposite each other and having a substantially mating shape to the shape of the rod member whereon the shoes are acting. The pair of shoes is supported by a pair of leaf springs pivoted at their other ends to an opposite rod member to the rod member whereon the shoes are acting.

REFERENCES:
patent: 2090439 (1937-08-01), Carwardine
patent: 2171028 (1939-08-01), Gelb
patent: 3188460 (1965-06-01), Thorsen
patent: 3535508 (1970-10-01), Warshauser
patent: 3543019 (1970-11-01), Jacobsen
patent: 3868502 (1975-02-01), Beeren
patent: 4080530 (1978-03-01), Krofsrud

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