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US 2016/0016225 A1Published application
Isolating decoupler
AssigneeThe Gates Corporation
InventorsALEXANDER SERKH, DEAN SCHNEIDER, YAHYA HODJAT
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Abstract
An isolator decoupler comprising a shaft (1), a pulley (2) journalled to the shaft, a torsion spring (10) engaged between the pulley and a carrier (9), the torsion spring loaded in an unwinding direction, a wrap spring (11) engaged between the carrier and the shaft, the wrap spring comprising a cylindrical inner portion (94) and a planar outer portion (93) connected by a tapered portion (155), and the inner portion frictionally engaged with the shaft in a winding direction.
Claims3
A method of forming a spring wire comprising:
- cutting a spring wire having a cross-sectional dimension of 1.5 mm×2.5 mm to a predetermined length;
- loading multiple spring wires into a fixture wherein the spring wires are parallel and resting on the 1.5 mm side;
- gang grinding the spring wires to obtain a portion having taper from 2.5 mm to 1.2 mm;
- removing the spring wires from the fixture and placing them on a magnetic table so the spring wires are parallel and rest on the 1.2 mm side;
- gang grinding the spring wires to obtain a second portion having a taper from 1.5 mm to 0.6 mm;
- and
- winding each spring wire into a final shape.
4 more elements
A method of forming a spring wire comprising:
- cutting a spring wire having a rectangular cross-section to a predetermined length, the rectangular cross-section having a long side and a short side;
- loading multiple spring wires into a fixture wherein the spring wires are parallel and resting on the short side;
- gang grinding the spring wires to obtain a portion having taper of the long side dimension to approximately 50% of the long side dimension;
- removing the spring wires from the fixture and placing them on a magnetic table so the spring wires are parallel and rest on the long side;
- gang grinding the short side of the spring wires to obtain a second portion having a taper to approximately 50% of the short side dimension, the short side tapered portion coextensive with the long side tapered portion;
- and
- winding each spring wire into a final shape.
4 more elements
Dependencies are inferred from the claim text.