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US 8,555,549 B2Granted
Window regulator cable tensioner
AssigneeInteva Products France SAS
InventorsPatrice Cardine, Denis Chevy, Christophe Gavaret
Life of this patent
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Abstract
A window regulator cable tensioner includes a screw and nut assembly having an irreversible thread lead angle, a first spring to absorb reversible slack in the cable, and a second spring to actuate movement of the screw and nut assembly. The stiffness of the first spring is greater than the stiffness of the second spring. The cable tensioner absorbs the reversible slack in the cable differently from irreversible slack in the cable.
Claims25
A window regulator cable tensioner comprising:
- a threaded assembly including an irreversible thread lead angle, wherein the threaded assembly comprises a nut and a screw;
- a first resilient member having a first stiffness to absorb reversible slack in a cable;
- and
- a second resilient member having a second stiffness to actuate movement of the screw relative to the nut, wherein the first stiffness of the first resilient member is greater than the second stiffness of the second resilient member, and the second resilient member actuates the movement of the screw relative to the nut when the first resilient member is fully expanded.
1 more element
A window regulator comprising:
- a cable to actuate movement of a window;
- and
- a cable tensioner including a threaded assembly having an irreversible thread lead angle, the threaded assembly including a screw and a nut, the cable tensioner including a first resilient member having a first stiffness to absorb reversible slack in the cable, and a second resilient member having a second stiffness to actuate movement of the screw relative to the nut, the first stiffness of the first resilient member being greater than the second stiffness of the second resilient member, wherein the first resilient member absorbs the reversible slack in the cable when the window is at an upper limit and the second resilient member actuates the threaded assembly to absorb irreversible slack in the cable due to wear.
Dependencies are inferred from the claim text.