Dual press-fit wrap spring clutch

Details Dual press-fit wrap spring clutch Dual press-fit wrap spring clutch

2006-05-30

2006-05-30

Rodriguez, Saul (Department: 3681)

192 clutches and power-stop control

Clutches

Automatic

C192S08100C, C192S084810

Reexamination Certificate

active

07051854

ABSTRACT:
A wrap spring clutch including a drive shaft, an output hub, a shoulder, a hub, a wrap spring, a bushing, and a control ring. The drive shaft is configured to rotate about an axis. The output hub is mounted over the drive shaft and is configured with a first groove. The shoulder is fixed to the drive shaft and configured to rotate therewith. The hub is fixed to the drive shaft and is configured to rotate therewith. The wrap spring is helically wrapped about the drive shaft and over the hub. The wrap spring also includes a first wrap end and a second wrap end. The first wrap end is press fit into the first groove. The bushing is mounted over the drive shaft and the bushing has a first portion and a second portion. The first portion is coupled between the drive shaft and the second wrap end. The control ring is mounted over the drive shaft and fixed to the second portion of the bushing thereby defining a second groove. The second wrap end is press fit into the second groove. The control ring is controllably pulled against the shoulder causing the wrap spring to wrap down onto the hub such that the drive shaft and output hub rotate together.

REFERENCES:
patent: 4263995 (1981-04-01), Wahlstedt
patent: 4465171 (1984-08-01), Koyama
patent: 4502578 (1985-03-01), Koyama
patent: 4638899 (1987-01-01), Kossett
patent: 5099974 (1992-03-01), Spechko
patent: 5251735 (1993-10-01), Lamoureux
patent: 5687822 (1997-11-01), Arai
patent: 5918716 (1999-07-01), Arcaro
patent: 5967274 (1999-10-01), Leone et al.
patent: 6138808 (2000-10-01), Wussow

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