Seal assembly having first and second seals acting in series

Details Seal assembly having first and second seals acting in series Seal assembly having first and second seals acting in series

1996-07-30

1997-12-16

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277144, F16J 1516

Patent

active

056976208

ABSTRACT:
To provide a better seal for example in an indexing arm for a machine tool to prevent swarf getting to the rubber seal, an outer spring seal is provided. The seal takes the form a closely wound coil spring formed into a ring and positioned in a slightly expanded state in a vee-grove at the entrance to the space being sealed. The spring is compliant enough to allow for slight axial and transverse relative movements of the two parts of the arm and is hard enough not to be damaged by swarf or the limited relative rotation between the parts during indexing.

REFERENCES:
patent: 2483827 (1949-10-01), Guiler
patent: 2587810 (1952-03-01), Beyer
patent: 2962314 (1960-11-01), Rickard
patent: 3559733 (1971-02-01), Kilgore
patent: 3687465 (1972-08-01), Grime et al.
patent: 4310163 (1982-01-01), Pippert
patent: 4379558 (1983-04-01), Pippert

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