Pipe joints or couplings – Swivel – With rotation limits
Patent
1984-04-02
1986-01-21
Husar, Cornelius J.
Pipe joints or couplings
Swivel
With rotation limits
285DIG8, 411117, 411 41, 248415, 2482891, F16L 2700, F16D 112
Patent
active
045653950
ABSTRACT:
An extensible swivel for lamps and the like is disclosed. The extensible swivel preferably is incorporated in a leg or an arm of a lamp, where the leg or the arm includes upper and lower tubular members joined by a retainer ring. An extension sleeve preferably is secured with one end in the upper tubular member and, a hollow swivel is secured to the sleeve's other end. The lower tubular member is provided with a key sleeve having a key along its axial length. The hollow swivel is designed to be accommodated, for axial and rotational adjustment, within the key sleeve. Such adjustment, when made, is held frictionally stable and stationary. The hollow swivel includes a spindle on which the swivel's operative parts are mounted. These operative parts include a stop ring fixedly mounted to the spindle, at least one double-leg ring member mounted in operative association with the stop ring and, a stop bushing provided with a channel and mounted in operative association with the double-leg ring member. The channel is designed to accommodate the key of the key sleeve. The rotational adjustment of the swivel can vary anywhere from a fraction of a revolution to several revolutions.
REFERENCES:
patent: 2242303 (1941-05-01), Irmischer
patent: 2262585 (1941-11-01), Irmischer
patent: 2686067 (1954-08-01), Stepans
patent: 3022096 (1962-02-01), Schwartz
patent: 3034809 (1962-05-01), Greenberg
patent: 3104067 (1963-09-01), Stiffel
patent: 3604923 (1971-09-01), Moffatt
patent: 4009731 (1977-03-01), Denz
patent: 4347557 (1982-08-01), Warshawsky
patent: 4487469 (1984-12-01), Bjork
Rockwood Richard D.
Ruskin Bernard J.
Chapman Manufacturing Company, Inc.
Husar Cornelius J.
Williams Todd G.
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