Patents and current patent applications

Fixing of components	A method of using tolerance rings to fix a thin component onto a pivot.
Fastener or Ring Profile Fastener	Tolerance rings with spring fingers or other projections.
Force Limiter assembly	Tolerance rings used in combination with low friction sleeves to limit forces.
Tolerance Ring Assembly	Flared tolerance rings to permit assembly of the tolerance ring ‘the wrong way around’ – helpful when the tolerance ring waves have to be stationery on the surface that would slide on the tolerance ring during assembly.
Retaining device	Tolerance Ring to control sliding force.
Combination mounting Ring	Combined tolerance ring and wavy washer.
Rotary fixing method	Cam attach method to avoid axial forces during assembly.
Mounting assembly (inc. Tolerance ring and shim)	Plastically deforming waves to limit force variation. Bridging waves to assist in force distribution and provide stability for HDD sleeveless pivot mounting. Combination tolerance ring and shim for use as above.
Tolerance ring with retaining device (tabs)

Tolerance Rings are radial spring fasteners
that are press fitted between two mating components. This generates a retention force that fixes those components together, whilst also satisfying other functional requirements such as Torque Drive, Overload Protection, NVH Performance and Differential Thermal Expansion.

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