Inventors:
Richard A. Haglund - Hawthorne CA
Robert E. Tupack - Hermosa Beach CA
Assignee:
Teledyne Industries, Inc. - Los Angeles CA
International Classification:
E01D 100
F16L 922
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.