Claims
- 1. In an airspring of the type with a sleeve having a first rolling lobe connected at an end to
a first piston, a second rolling lobe connected at an end to a second piston, each of said first and second pistons includes a rolling surface that in conjunction with the first and second rolling lobe defines an effective area for each of said first and second pistons, wherein the improvement comprises:
the second piston effective area is greater than the first piston effective area.
- 2. The airspring as claimed in claim 1 wherein the second pistion is substantially frustoconical.
- 3. The airspring as claimed in claim 1 wherein the first piston is substantially cylindrical.
- 4. The airspring as claimed in claim 1 wherein a mounting member connects the first rolling lobe to the first piston.
- 5. The airspring as claimed in claim 1 wherein a mounting member connects the second rolling lobe to the second piston.
- 6. The airspring as claimed in claim 1 wherein the sleeve includes a chamber portion.
- 7. The airspring as claimed in claim 6 wherein the second piston is in the chamber portion.
- 8. In an airspring of the type with a sleeve having a chamber portion, a first rolling lobe connected at an end to a first piston, a second rolling lobe connected at an end to a second piston wherein the improvement comprises:
the second piston is substantially frustoconical and the first piston is substantially cylindrical.
- 9. In an airspring of the type with a sleeve having a first rolling lobe connected at an end to a first piston, a second rolling lobe connected at an end to a second piston, each of said first and second pistons includes a rolling surface that in conjunction with the first and second rolling lobe defines an effective area for each of said first and second pistons, wherein the improvement comprises:
the second piston minimum effective area is less than the first piston minimum effective area and the second piston maximum effective area is greater than the first piston maximum effective area.
- 10. An airspring comprising:
a first piston having an effective area; a second piston having an effective area; a sleeve having a rolling lobe connected to the first piston and a rolling lobe connected to the second piston.
- 11. The airspring as claimed in claim 10, wherein:
the first piston has a variable effective area; and the second piston has a variable effective area.
- 12. The airspring as claimed in claim 11, wherein:
a point in a range of the size of the variable effective area of the first piston is equal to at least one point in a range of the size of the variable effective area of the second piston.
- 13. The airspring as claimed in claim 12, wherein:
the first piston is substantially frustoconical.
- 14. The airspring as claimed in claim 13, wherein:
the second piston is substantially frustoconical.
- 15. The airspring as claimed in claim 13, wherein a mounting member connects the first rolling lobe to the first piston.
- 16. The airspring as claimed in claim 14 wherein a mounting member connects the second rolling lobe to the second piston.
- 17. The airspring as claimed in claim 15 wherein the sleeve includes a chamber portion.
Parent Case Info
[0001] This application claims priority from U.S. provisional application serial No. 60/139,056 filed Jun. 11, 1999.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60139056 |
Jun 1999 |
US |