Supports – Stand and bracket – Having adjustable bracket
Patent
1986-11-14
1988-02-23
Ramirez, Ramon O.
Supports
Stand and bracket
Having adjustable bracket
248145, 248282, 248415, 362427, 362431, 362432, 403164, F16L 300
Patent
active
047265523
ABSTRACT:
A swing arm lamp has the swing arms thereof connected to each other through a swivel assembly that includes a pair of end swivel elements and a center swivel element all disposed proximate each other and interconnected so as to rotate with respect to each other about an axis of rotation through the swivel assembly, but so that relative sliding movement along the axis of rotation of the elements with respect to each other is substantially prevented. The elements are formed of tubular stock with the center element having reduced outer diameter at each end thereof and having a circumferential groove formed about each such reduced outer diameter. The reduced outer diameter end portions of the center element, in turn, seat respectively in enlarged inner diameter end portions of the end elements. A lug is formed from the material of each such end element by displacing the wall thereof in a swaging process. The lugs are so formed to project into their respective circumferential groove and coact with the side walls thereof, but so as to permit the rotational movement and prevent the relative sliding movement. In an alternate embodiment only two swivel elements are utilized; a first like the end element and the second like the center element but with only one reduced end and groove.
REFERENCES:
patent: 3010013 (1961-11-01), Guntheral et al.
patent: 3044798 (1962-07-01), Gerner
patent: 4121280 (1978-10-01), Chapman et al.
patent: 4247886 (1981-01-01), Warshawsky
patent: 4296577 (1981-10-01), Schuette
patent: 4347557 (1982-08-01), Warshawsky
patent: 4381538 (1983-04-01), Warshawsky
patent: 4517632 (1985-05-01), Roos
patent: 4548373 (1985-10-01), Komura
Feldman Stephen E.
Ramirez Ramon O.
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