Dual rate leaf spring construction

Details Dual rate leaf spring construction Dual rate leaf spring construction

1987-07-17

1988-06-14

Reger, Duane A.

Spring devices

Vehicle

Leaf

267149, F16F 126

Patent

active

047507187

ABSTRACT:
A dual rate leaf spring construction including a main leaf spring, preferably formed of fiber reinforced resin, and having a central section adapted to be connected to an axle of a vehicle and having a pair of ends to be connected to the frame of the vehicle. A secondary leaf spring, having a substantially shorter length than the main leaf spring, is secured beneath and parallel to the main leaf spring, and an elastomeric pad is mounted on each end of the secondary spring. The pads have upwardly facing rounded heads that are spaced out of contact with the lower surface of the main spring under normal load conditions. Under heavy load conditions, the main spring will deflect downwardly into contact with the pads to thereby enable the secondary spring to carry a portion of the load.

REFERENCES:
patent: 2861798 (1958-11-01), Lenet et al.
patent: 3061301 (1962-10-01), Bajer et al.
patent: 3541605 (1970-11-01), Mohl
patent: 3586307 (1971-06-01), Brownyer
patent: 3968958 (1976-07-01), Huchette et al.

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