Canted-coil spring with turn angle and seal
First Claim
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1. An annular axially resilient coiled spring seal comprising:
- a plurality of coils canted along a centerline thereof;
back angle means for both defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline and for determining the load-deflection characteristics of the garter-type axially resilient coiled spring;
front angle means for defining the disposition of a leading portion of each coil with respect to the normal line, said front angle means being greater than said back angle means;
said coils being interconnected in a manner forming a garter-type axially resilient coiled spring; and
annular seal means for non-invasively supporting the garter-type axially resilient coiled spring in a preselected orientation for controlling the resilient characteristics of the annular axially resilient coiled spring.
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Abstract
A garter-type axially resilient coil spring includes a plurality of coils canted along a centerline thereof with each coil having a trailing portion and a leading portion. The disposition of the trailing portion is defined by a back angle between the trailing portion and a line normal to the centerline and the disposition of the leading portion is defined by a front angle between the leading portion and a normal line. Specific resilient performance, or load-characteristics, of the springs are obtained by controlling a turn angle of the coil spring. At selected turn angles, springs exhibit a resilient working area bounded by steep load-deflection characteristics.
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Citations
18 Claims
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1. An annular axially resilient coiled spring seal comprising:
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a plurality of coils canted along a centerline thereof; back angle means for both defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline and for determining the load-deflection characteristics of the garter-type axially resilient coiled spring; front angle means for defining the disposition of a leading portion of each coil with respect to the normal line, said front angle means being greater than said back angle means; said coils being interconnected in a manner forming a garter-type axially resilient coiled spring; and annular seal means for non-invasively supporting the garter-type axially resilient coiled spring in a preselected orientation for controlling the resilient characteristics of the annular axially resilient coiled spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A garter-type axially resilient coiled spring comprising:
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a plurality of coils canted along a centerline thereof; back angle means for both defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline and defining the load-deflection characteristics of the garter-type axially resilient coiled spring; front angle means for defining the disposition of a leading portion of each coil with respect to the normal line, said front angle means and being greater than said back angle means; said coils being interconnected in a manner forming a garter-type axially resilient coiled spring, said garter-type axially resilient coiled spring having an orientation defined by a turn angle, said turn angle being greater than zero degrees and less than 90 degrees. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification