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US 4,907,788 AGranted
Dual concentric canted-coil spring apparatus
AssigneesPeter J. Balsells, Joan C. Balsells
InventorPeter J. Balsells
Life of this patent
Estimating the term…
Abstract
Annular coil spring apparatus is provided which includes a first annular spring with a plurality of coils canted along a centerline with a trailing portion of each coil and a leading portion of each coil defined by a back angle and front angle, respectively. Coils are interconnected in order to form a garter-type coil spring and a second annular spring is provided and disposed within the first annular spring. The second annular spring may include a plurality of coils canted along a centerline thereof and the first and second annular spring may be canted in either the same direction or opposite directions in order to provide different force-deflection characteristics of the annular coil spring apparatus.
Claims32
Annular coiled spring apparatus comprising:
- (a) a first annular spring comprising:
- a plurality of coils canted along a centerline thereof;
- back angle means for defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline thereof and determining the force-deflection characteristics of the first annular 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 resilient coiled spring;
- (b) a second annular spring disposed within said first annular spring comprising:
- a plurality of coils canted along a centerline thereof;
- back angle means for defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline thereof and determining the force-deflection characteristics of the second annular 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 second garter-type resilient coiled spring;
- and
- said centerline of first and second annular spring coinciding and the plurality of coils of the first annular spring canting in an opposite direction along the centerline than the plurality of coils of the second annular spring.
9 more elements
The annular coiled spring seal apparatus comprising:
- (a) a first annular axially resilient coiled spring 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 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;
- (b) a second annular spring disposed within said first annular spring;
- said second annular spring 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 second annular spring;
- and
- 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 second garter-type axially resilient coiled spring;
- said first and second annular spring having coinciding centerline and the plurality of coils of the first annular spring cant in an opposite direction along the centerline than the plurality of coils of the second annular spring;
- and
- (c) annular seal means for non-invasively supporting the first annular axially resilient coiled spring in a preselected orientation for controlling the resilient characteristics of the first annular axially resilient coiled spring.
12 more elements
The annular coiled spring apparatus comprising:
- (a) a first annular radially resilient canted coiled spring comprising:
- a plurality of coils canted along a center, line thereof;
- back angle means for defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline;
- 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;
- means orienting said plurality of coils at a turn angle for defining the load-deflection characteristics of the radially resilient canted coiled spring, said turn angle being greater than zero degrees and less than 90 degrees;
- and
- (b) a second annular spring disposed within said first annular spring comprising:
- a plurality of coils canted along a centerline thereof;
- back angle means for defining the disposition of a trailing portion of each coil with respect to a line normal to the centerline;
- 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 first and second annular springs having coinciding centerlines and the plurality of coils of the first annular spring cant in an opposite direction along the centerline than the plurality of coils of the second annular spring.
8 more elements
Dependencies are inferred from the claim text.