Slip clutch with slip detector and electrical disconnect

Details Slip clutch with slip detector and electrical disconnect Slip clutch with slip detector and electrical disconnect

1983-12-12

1986-08-12

Smith, Leonard E.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0033, 192 0096, 192 56C, F16D 700

Patent

active

046051074

ABSTRACT:
Apparatus for protection against damage from excessive torque loads, including a fast-acting slip clutch to limit torque transmitted between a drive motor and a mechanical load, and an automatic device to protect the slip clutch from damage due to slippage in excess of a predetermined amount for a predetermined time. A slip measurement device detects the degree of slippage in the clutch, and a timing circuit coupled to the slip measurement device disconnects power from the drive motor after the predetermined time has elapsed. In the illustrative embodiment of the invention, the slip clutch includes an input shaft, a wrapped spring in interference-fit engagement with the input shaft, and an output shaft in engagement with one end of the spring. The spring tends to unwrap from the input shaft and to slip if a torque in excess of a threshold level is transmitted.

REFERENCES:
patent: 2465829 (1949-03-01), Ancet
patent: 2533973 (1950-12-01), Starkey
patent: 2735976 (1956-02-01), Danly
patent: 2753029 (1956-07-01), Babaian
patent: 3915271 (1975-10-01), Harper

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