Spring compressor tool

Details Spring compressor tool Spring compressor tool

1975-11-21

1977-07-12

Jones, Jr., James L.

Implements or apparatus for applying pushing or pulling force

Metallic spring stretcher and/or compressor

29227, B23P 1904

Patent

active

040349608

ABSTRACT:
An improved spring compressor tool for use on, for example, a MacPherson-type independent suspension assembly of a vehicle, without the necessity of removing the suspension from the vehicle. The tool includes upper and lower U-shaped pressure shoes having helical-shaped outer peripheries which define slots for receiving spaced coils of the spring intermediate the opposed connected ends of the spring. At least one of the shoes is linearly adjustable and both shoes are rotatably adjustable for initial alignment with the spaced spring coils. A pair of pneumatic cylinders are positioned side-by-side between the upper and lower shoes. Air pressure is provided through novel valves mounted on a handle for the tool to the cylinders for moving the shoes toward one another to compress the spring and to vent the cylinders for releasing the spring. Return springs are provided in the cylinders to urge the shoes to a non-compressed position during venting. In a modified embodiment of the tool, the lower shoe is replaced with a bench-mounted clamp which engages the suspension assembly below the spring.

REFERENCES:
patent: 2883742 (1959-04-01), Prath
patent: 3150859 (1964-09-01), Payne
patent: 3764107 (1973-10-01), Mlynarczyk

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