Truck cab ventilation system and method

Details Truck cab ventilation system and method Truck cab ventilation system and method

1996-04-12

1998-07-14

Joyce, Harold

Ventilation

Vehicle

Roof structure

454141, 454165, B60H 126

Patent

active

057795363

ABSTRACT:
A truck cab ventilation system and method which includes an air exhaust channel that extends from an upper channel portion adjacent the ceiling at the rear of the cab and through a lower channel portion to an exhaust vent mounted adjacent the floor of the cab over an exit opening in such floor. An inlet vent in the front of the cab produces a positive pressure within the cab which causes flow-through ventilation air flow from the front to the rear of the cab when the truck is moving. As a result, air flows into the upper channel portion of the exhaust channel and out of the exhaust vent through the exit opening to the exterior of the cab. The exhaust vent includes flexible louvers of elastomer which are held by gravity in a closed position and are moved into an open position when air flows out through the exhaust system.

REFERENCES:
patent: 1618152 (1927-02-01), Hutchins
patent: 4640184 (1987-02-01), Matsushima et al.
patent: 5040455 (1991-08-01), Doi et al.
patent: 5105731 (1992-04-01), Kraus
patent: 5205782 (1993-04-01), Ohba
"Passenger Car Ventilation by Design" by K. Wilfert and H. Goetz, Society of Automotive Engineers, Inc., Mid-Year Meeting, Chicago, Illinois, May 17-21, 1965, pp. 1-6.
Freightliner Corporation drawing entitled "Vent-Exhauster" for a 68811 HVAC TRW body pressure relief vent (in German-without translation), showing prior art vent in drawing dated Sep. 22, 1988.

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