Multiple torsion spring and methods of use
AssigneePrecision Products Group
InventorsRobert J. Pavlin, Todd K. Watkins, Gary T. Wehnes, Curt A. Converse, James E. Adams
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Abstract
A multiple torsion spring assembly according to the present invention may be provided with a coiled helical torsion spring. The spring has first and second end coils, and a plurality of intermediate coils between the first and second end coils. The first end coil inner diameter is less than the inner diameter of the intermediate coils. The second end coil inner diameter is less than the inner diameter of the first end coil. The spring may be used to control a throttle return of a throttle body. Methods of manufacturing spring assemblies are also disclosed.
Claims12
A multiple torsion spring comprising
- a plurality of strands disposed in parallel relation and simultaneously deflected to form a coiled helix having first and second end coils, and a plurality of intermediate coils between the first and second end coils, wherein
- the intermediate coils have an inner diameter,
- the first end coil has an inner diameter less than the inner diameter of the intermediate coils, and
- the second end coil has an inner diameter less than the inner diameter of the first end coil.
A coiled multiple torsion spring comprising:
- a plurality of strands disposed in parallel relation and simultaneously deflected to form:
- a first end coil;
- a second end coil;
- and
- a plurality of non-uniform intermediate coils between the first and second end coils.
A coiled multiple torsion spring comprising:
- a plurality of strands disposed in parallel relation and simultaneously deflected to form:
- a first end coil;
- a second end coil;
- and
- a plurality of intermediate coils between the first and second end coils,
- wherein at least one of the first and second end coils is pitched relative to the intermediate coils.
Dependencies are inferred from the claim text.