Multi-rate torsion bar independent suspension spring

Details Multi-rate torsion bar independent suspension spring Multi-rate torsion bar independent suspension spring

2005-09-20

2005-09-20

Graham, Matthew C. (Department: 3683)

Spring devices

Vehicle

Torsion

C277S377000

Reexamination Certificate

active

06945522

ABSTRACT:
A torsion bar suspension assembly is provided that includes a control arm supported by a frame. The torsion bar extends along a longitudinal axis having a first end portion connected to the control arm and a second end portion engaging the frame. A contact arm is connected to the torsion bar and is arranged between the first and second end portions. The contact arm is spaced from the frame in a first position and engages the frame in a second position. A first spring rate is provided when the contact arm is spaced from the frame between the first and second positions. Once the contact arm engages the frame between second and third positions, a second spring rate is provided that is different from the first spring rate.

REFERENCES:
patent: 4635958 (1987-01-01), Yonemoto
patent: 4884790 (1989-12-01), Castrilli
patent: 5186216 (1993-02-01), Bollier
patent: 5288101 (1994-02-01), Minnett
patent: 5354041 (1994-10-01), Edwards
patent: 5687960 (1997-11-01), Moon
patent: 6425594 (2002-07-01), Fader et al.

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