Apparatus for providing additional lift in a retractable suspens

Details Apparatus for providing additional lift in a retractable suspens Apparatus for providing additional lift in a retractable suspens

1990-06-18

1991-10-22

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

280711, 180209, B60G 1126

Patent

active

050589164

ABSTRACT:
An improved lift mechanism is provided in an air spring trailing arm suspension comprising control arms pivotally mounted to a frame and adapted to carry ground-engaging wheels. An air spring is mounted between the control arms and the frame. A plate member mounted for vertical displacement on guide rods secured to the frame carries an upper portion of the air spacing so that the air spring can be vertically displaced relative to the frame. A lower portion of the air spring engages a piston which is kept in a generally upwardly facing orientation by a parallelogram linkage. A ratchet and pawl mechanism locks the control arms in the retracted position, and a latch mechanism locks the plate member to the frame when the plate member is vertically displaced to a lower limit of vertical movement.

REFERENCES:
patent: 2821409 (1958-01-01), Chalmers
patent: 3001796 (1961-09-01), Martin
patent: 4300787 (1981-11-01), Vandenberg
patent: 4309045 (1982-01-01), Raidel
patent: 4838566 (1989-06-01), Baxter et al.

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