Tractor trailer air deflector device

Details Tractor trailer air deflector device Tractor trailer air deflector device

1977-05-26

1979-05-29

Bertsch, Richard A.

Land vehicles: bodies and tops

Bodies

Accessories

105 2R, 296 91, B60J 900

Patent

active

041565436

ABSTRACT:
An adjustable air-deflector device adapted to be movably mounted on the roof of a driving cab of a commercial vehicle and comprising a substantially planar member having the shape of a truncated isosceles triangle, the shorter parallel edge of which is hinged to the cab roof, and the non-parallel edges of which are connected to the cab roof through adjustable bellows-type side walls, there being angle-adjustment means provided to allow the driver of the vehicle to adjust the angle of the planar member relative to the cab roof to produce minimal drag over a trailer portion of the vehicle. Driver determines optimum angle either from a table of predetermined figures or from a drag pressure metering instrument mounted in the cab of the vehicle. Air-deflector device can be used in a tractor-trailer assembly in combination with adjustable side curtains, which close the gap between the tractor and trailer and reduce the component of drag produced by yaw between the moving tractor and trailer.

REFERENCES:
patent: 3834752 (1974-09-01), Cook et al.
patent: 3947065 (1976-03-01), Geiger
patent: 3951445 (1976-04-01), Tatom
patent: 3972556 (1976-08-01), Mason, Jr.
patent: 4035013 (1977-07-01), Abbott
patent: 4082340 (1978-04-01), Taylor

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