Dual lobe airspring
AssigneeThe Gates Corporation
InventorsMichael L. Crabtree, Richard F. Stieg
Life of this patent
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Abstract
An air spring of the type with a sleeve having a first rolling lobe connected at an end to a first piston, a second rolling lobe connected to an end to a second piston, and where the first piston is substantially frustoconical and the second piston is substantially cylindrical and where the minimum effective area of the first piston is less than the minimum effective area of the second piston and where the maximum effective area of the first piston is greater than the maximum effective area of the second piston. The frustoconical first piston allows the air spring to accommodate large angular suspension motion without degrading durability.
Claims7
An airspring comprising:
- a sleeve having a first rolling lobe connected at an end to a first piston;
- the sleeve having a second rolling lobe connected at an end to a second piston;
- each of said first and second pistons comprising a rolling surface that in conjunction with the first rolling lobe and second rolling lobe defines an effective area for each of said first and second pistons;
- the second piston maximum effective area is greater than the first piston maximum effective area;
- the second piston minimum effective area is less than the first piston minimum effective area;
- the first piston having a movement in an x, y, and z axis with respect to a vehicle chassis;
- and
- the second piston having a movement in an x, y, and z axis with respect to a vehicle chassis.
Dependencies are inferred from the claim text.