Aircraft towing vehicle having swiveled nose wheel lifter

Details Aircraft towing vehicle having swiveled nose wheel lifter Aircraft towing vehicle having swiveled nose wheel lifter

1988-09-28

1990-03-27

Bucci, David A.

Material or article handling

Wheel and wheel-type article handler and transporter

Vertically swinging article engager

414429, B60P 311, B62D 4902, B64F 122

Patent

active

049116037

ABSTRACT:
An aircraft towing vehicle has a rearwardly opening recess adapted to receive the nose wheel of an aircraft to be towed. A nose wheel lifting and clamping mechanism has two nose wheel lifters which can be pivoted from a retracted position, in which they are parallel to sides of the vehicle frame, into an operative position, in which they extend into the recess for engaging the aircraft nose wheel. The lifters pivot on rocker arms which themselves pivot about a horizontal axis and are power driven by hydraulic actuators. A separate hydraulic swivel drive motor is provided for each lifter. The pressure increase which takes place when the swivel drive reaches the end of its path is used to initiate the delivery of pressurized fluid to the actuator. A crank arm driven by the hydraulic motor is connected to the support for the lifter with a low back pivot, self locking linkage to positively prevent even excessive forces generated during the nose wheel lifting process from unintentionally moving the lifters towards their retracted positions.

REFERENCES:
patent: 3049253 (1962-08-01), Cabral
patent: 3586187 (1971-06-01), Wright
patent: 4375244 (1983-03-01), Morin
patent: 4632625 (1986-12-01), Schuller et al.
patent: 4810157 (1989-03-01), Schopf
Interavia 9, p. 987, publ. 1987.
Transport und Lager, No. 9, pp. 68-69, publ. 1987.
Latauto Omnibus, No. 12, pp. 40-41, publ. 1985.

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