Gas spring having a plurality of pressure chambers arranged one

Details Gas spring having a plurality of pressure chambers arranged one Gas spring having a plurality of pressure chambers arranged one

1989-05-30

1990-03-20

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

267 6425, 267120, 267124, F16F 902

Patent

active

049094882

ABSTRACT:
According to an illustrative example of the invention a cylinder is subdivided by a stationary partition wall into two pressure chambers. A first piston rod is sealingly introduced from atmosphere through one end wall of the cylinder into a first pressure chamber provided on one side of the partition wall. A second piston rod sealingly extends through said partition wall from the first pressure chamber on one side of the partition wall to a second pressure chamber on the other side of the partition wall. A lower gas pressure is provided in the first pressure chamber and a higher gas pressure is provided in the second pressure chamber. Abutment faces are allocated to the first and to the second piston rod. On inward movement of the first piston rod with respect to the cylinder the abutment faces enter into engagement after a predetermined path of inward movement of the first piston rod.

REFERENCES:
patent: 2554807 (1951-05-01), Bingham
patent: 2959410 (1960-11-01), Fullam et al.
patent: 3656632 (1972-04-01), Karakashian et al.
patent: 3751023 (1973-08-01), Thomas
patent: 4054277 (1977-10-01), Sirven
patent: 4303231 (1981-12-01), Reuschenbach et al.
patent: 4373707 (1983-02-01), Molders
patent: 4408751 (1983-10-01), Dodson et al.
patent: 4467899 (1984-08-01), Molders et al.
patent: 4506869 (1985-03-01), Mosclet et al.
patent: 4593890 (1986-06-01), Van Der Laarse
patent: 4718647 (1988-01-01), Ludwig

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