Electromagnetic clutch with improved torque cushion

Details Electromagnetic clutch with improved torque cushion Electromagnetic clutch with improved torque cushion

1996-03-13

1997-05-27

Pitts, Andrea L.

192 clutches and power-stop control

Clutches

Operators

192 84941, 192209, 464 89, F16D 2714

Patent

active

056323662

ABSTRACT:
An improved, torque cushioned compressor clutch supports the armature on a hard plastic molded disk, the inner edge of which closely pilots on, but is not directly attached to, a cylindrical surface of a drive shaft mounted central hub. Instead, the outer face of the disk, near the inner edge, is abutted with an axially inwardly facing shoulder, which keeps it from pulling axially off of the hub. A softer elastomer overmold adheres to both sides of the harder support disk, adhering to the hub as well, but not adhering to the interface between the disk inner edge and hub. Therefore, when the clutch engages, the disk is free to turn on the hub, at least as far as the "wind up" limit of the elastomer allows, cushioning the engagement shock. However, during operation, the close fit of the disk on the hub prevents radial whirl.

REFERENCES:
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patent: 4445606 (1984-05-01), Van Laningham
patent: 4624354 (1986-11-01), Koitabashi
patent: 5036964 (1991-08-01), Booth et al.
patent: 5150779 (1992-09-01), Booth
patent: 5195625 (1993-03-01), Chang et al.
patent: 5219273 (1993-06-01), Chang
patent: 5370209 (1994-12-01), Vanlaningham et al.
patent: 5372228 (1994-12-01), Vanlaningham et al.
patent: 5377799 (1995-01-01), Mullaney
patent: 5390774 (1995-02-01), Thurston et al.

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