Exhaust-gas removal duct formed from individual axially mutually

Details Exhaust-gas removal duct formed from individual axially mutually Exhaust-gas removal duct formed from individual axially mutually

1990-07-18

1991-12-03

Makay, Albert J.

Ventilation

Vehicular tunnel

454 64, E21F 104

Patent

active

050691155

ABSTRACT:
The invention relates to an exhaust-gas removal duct formed from individual axially mutually adjacent sections for track-forming lanes, having a longitudinal slot closed by a pair of elastic sealing lips. Each section has two channel-shaped shells which are joined leaktightly along a common longitudinal edge. One yoke sheet is, furthermore, provided per section, surrounds the section up to the longitudinal slot, transversely to the longitudinal axis of the removal duct, and is connected to the channel-shaped shells only in the region of the longitudinal edge and in the region of the sealing lips.

REFERENCES:
patent: 704808 (1902-07-01), Kress
patent: 4567817 (1986-02-01), Fleisher et al.

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