Land vehicles – Wheeled – Articulated vehicle
Patent
1996-02-13
1999-09-28
Boehler, Anne Marie
Land vehicles
Wheeled
Articulated vehicle
2804912, 403109, 403325, 403328, B60D 1167
Patent
active
059574771
ABSTRACT:
A towing arm is provided for use in a tow bar assembly that connects a towed vehicle to a towing vehicle. The towing arm has an inner leg and an outer leg so that it can move telescopically between a collapsed position which is suitable for storage and an extended position for towing. When connected between a towing vehicle and a towed vehicle, the towing arm will automatically lock in the extended position as the towing vehicle is pulled away from the towed vehicle. The locking feature is accomplished by a slideable collar that moves between a locked position and a released position. When in the locked position, the collar holds catches in place between the outer leg and grooves in the inner leg, thereby locking the legs in fixed relation to each other. When in the collar is moved to the released position, the legs are free to telescope relative to each other. The catches have saddle-shaped surfaces to fit the contours of the grooves. The grooves only partially encircle the inner leg.
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The Rangefinder II Tow Bar, A test of the next generation of Blue Ox towing equipment, Family Motor Coaching, pp. 50 and 52 (no date available).
Rangefinder II, New self-aligning tow bar eases the task of hitching a towed vehicle, MotorHome, pp. 77-78, Mar. 1993.
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Technical Information and Drawings related to Compleat Tow Bar by J. Peter Morris, Feb. 28, 1990.
Ensz Russell M.
Mulder Brent G.
Boehler Anne Marie
Dethmers Manufacturing Company
Gilchrist Michael C.
Laurenzo Brian J.
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