192 clutches and power-stop control – Clutches – Operators
Patent
1976-10-14
1978-05-02
Hermann, Allan D.
192 clutches and power-stop control
Clutches
Operators
64 28R, 192 67R, 403 28, F16D 4325
Patent
active
040869911
ABSTRACT:
A thermally actuated disconnect coupling includes a coupling shaft normally connected between a drive member and a driven member to transmit torque from the drive member to the driven member. Within the driven member, a fusible element such as a eutectic pellet supports the coupling shaft against axial movement during normal in-service use of the coupling. Providing the connection between the coupling shaft and the drive member are axially straight splines formed both on the coupling shaft and the drive member. At the other end of the coupling shaft, helical splines formed on the coupling shaft and the driven member provide means whereby torque is transmitted through the coupling shaft to driven member. The axial length of the helical splines is greater than the axial length of the straight splines. When the pellet is melted, such as by overheating, an axially directed component of the force transmitted by the helical splines propels the coupling shaft away from the drive member thereby disconnecting the drive and driven members.
REFERENCES:
patent: 2539534 (1951-01-01), Eckhardt
patent: 3064454 (1962-11-01), Sharples
patent: 3212613 (1965-10-01), Carlson
patent: 3889789 (1975-06-01), Boehringer
patent: 3960253 (1976-06-01), Sigg
Hermann Allan D.
Killingsworth Ted E.
McMurry Michael B.
Peoples William R.
Sundstrand Corporation
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