Airtight telescoping rigid conduit

Details Airtight telescoping rigid conduit Airtight telescoping rigid conduit

1984-04-09

1985-10-01

Bryant, III, James E.

Bridges

Gangway, ramp, or dock leveler

Attached

138120, 138155, 285302, 277206R, 277207A, 98 391, E01D 100, F16L 922

Patent

active

045436770

ABSTRACT:
An airtight telescoping rigid conduit is disclosed which includes rigid tubular sections which are coupled together using multiple bearings and a pressure actuated resilient seal ring. The tubular sections are constructed with a heat insulating foam core to minimize losses to, or gains from, the atmosphere. The conduit is designed to be attached to a telescoping passenger loading bridge which connects an airport terminal to an aircraft. The conduit provides preconditioned cooling or heating air from the terminal to the aircraft.

REFERENCES:
patent: 995453 (1911-06-01), Greenfield
patent: 2587810 (1952-03-01), Beyer
patent: 2764428 (1956-09-01), Murphy
patent: 2783106 (1957-02-01), Barnhart
patent: 2981232 (1961-04-01), Peras
patent: 3217805 (1965-11-01), Howard
patent: 3532367 (1970-10-01), Roos
patent: 3829104 (1974-08-01), Green
patent: 3976130 (1976-08-01), Chambless et al.
patent: 4270761 (1981-06-01), Hertz
patent: 4357860 (1982-11-01), Krzak

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