Land vehicles – Wheeled – Running gear
Patent
1976-07-19
1977-06-21
Goodman, Philip
Land vehicles
Wheeled
Running gear
267 21A, 280683, B60G 504
Patent
active
040307387
ABSTRACT:
The present invention discloses a multiple axle articulated suspension structure and system for vehicles wherein road and tire excitations of each axle are isolated from their opposing axle, as well as from the sprung mass. This is accomplished via deflections of pressure-resistant spring means and load-equalizing supports. In a preferred embodiment of this invention, a tandem axle vehicle suspension system having separately trunnioned rocker beam assemblies supported by cross axles is secured in a novel manner to a combination of self-dampening multiple spring means wherein, while each component spring means is not self-dampening, each combination thereof is self-dampening, and wherein air, elastomeric and hydraulic spring means are combined in a number of combinations thereof. Both air and hydraulic spring arrangements are contemplated, where the air spring is supplied with air at varying pressures which are a function of the load on the suspension, and wherein a height gauge located between the axle and the frame controls this pressure. An elastomer serves both to partially dampen the air spring, as well as to provide load deflection resistance to an undersized air spring. A hydraulic system dampens the air spring. Other embodiments are disclosed.
REFERENCES:
patent: 2367220 (1945-01-01), Knox
patent: 2442354 (1948-01-01), Gordon
patent: 3003781 (1961-10-01), Black
Goodman Philip
Sutton Paul J.
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