One piece aluminum pressure tube with rod guide for shock absorb

Details One piece aluminum pressure tube with rod guide for shock absorb One piece aluminum pressure tube with rod guide for shock absorb

1996-01-16

1999-04-13

Graham, Matthew C.

Brakes

Internal-resistance motion retarder

Valve structure or location

18832214, F16F 934

Patent

active

058934367

ABSTRACT:
A shock absorber includes an integral pressure tube and rod guide. The integration of these two components manufactured from aluminum allows the use of an aluminum pressure tube to eliminate axial differential thermal expansion between the pressure tube and an aluminum reserve tube. The use of aluminum for these two components reduces weight and improves the heat dissipation for the shock absorber. On addition, by producing the rod guide integral with the pressure tube and also of aluminum, additional weight savings are realized. Further advantages for the integration of these components include the elimination of leak paths, the limitation of assembly operations and the opportunity to utilize a "near net-shape" manufacturing process such as impact extrusion or semi-solid forming for the manufacture of the integral pressure tube and rod guide.

REFERENCES:
patent: 4405119 (1983-09-01), Maslet
patent: 4508201 (1985-04-01), Axthammer et al.
patent: 4585099 (1986-04-01), Taylor
patent: 4633983 (1987-01-01), Horvath et al.
patent: 4738339 (1988-04-01), Taylor
patent: 5392885 (1995-02-01), Patzenhauer et al.
patent: 5400877 (1995-03-01), Kircher
patent: 5423402 (1995-06-01), de Kock
patent: 5464079 (1995-11-01), Lohberg

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