Rotatable vacuum flange

Details Rotatable vacuum flange Rotatable vacuum flange

1991-10-28

1992-11-17

Reese, Randolph A.

Pipe joints or couplings

Vacuum cleaner type

285276, 285321, 285414, 285 24, 285413, F16L 2300

Patent

active

051637120

ABSTRACT:
A rotatable vacuum flange includes a flange ring having a recess, an insert mounted in the recess in the flange ring, the insert including a seal portion and being adapted for vacuum-tight attachment to a vacuum conduit, and a wire spring positioned between the flange ring and the insert. The wire spring retains the insert in the recess in the flange ring and permits rotation of the insert relative to the flange ring. The flange ring and the insert include grooves located in opposing alignment to receive the wire spring.

REFERENCES:
patent: 2058062 (1936-05-01), Cowles
patent: 2468315 (1946-02-01), Wagner
patent: 2757023 (1956-07-01), Hein
patent: 3453010 (1969-07-01), Gerretz
patent: 3455583 (1969-07-01), Ray
patent: 3712648 (1973-01-01), Clifford
patent: 3871691 (1975-03-01), Takagi et al.
patent: 3966234 (1976-06-01), Sundholm
patent: 4653780 (1987-03-01), Lalikos

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