Aerodynamic structure for semi-trailer trucks

Details Aerodynamic structure for semi-trailer trucks Aerodynamic structure for semi-trailer trucks

1985-09-17

1988-06-14

Song, Robert R.

Land vehicles: bodies and tops

Bodies

Accessories

B62D 3500

Patent

active

047507721

ABSTRACT:
A highway tractor cab is provided with a rigid aerodynamic structure, which may also be on the cab roof, which extends the sides of the cab and/or roof deflector beyond the rear wall of the cab toward a semi-trailer articulatedly connected to the tractor. A flexible side extension member, which is deformable on contact with the trailer but has a high degree of shape retention in the absence of such contact, is attached to the rear edge of the rigid structure and has an outer surface disposed to form an aerodynamically efficient continuation of the outer surface of the rigid structure. Preferably, the flexible side extension is wedge-shaped and is attached by a T-in-slot connection to a slotted tube mounted to the rigid structure completely inwardly of the outer surface thereof to avoid disturbing the air stream passing therealong.

REFERENCES:
patent: 3711146 (1973-01-01), Madzsar et al.
patent: 3972556 (1976-08-01), Mason, Jr.
patent: 4245862 (1981-01-01), Buckley, Jr.
patent: 4257641 (1981-03-01), Keedy
patent: 4257643 (1981-03-01), Choulet
patent: 4293159 (1981-10-01), Bott
patent: 4379582 (1983-04-01), Miwa
patent: 4397496 (1983-08-01), Drygas, III
Ward's Auto World, May 1884, p. 38H.

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