Fixed torque spring clutch and a winder having the same

Details Fixed torque spring clutch and a winder having the same Fixed torque spring clutch and a winder having the same

1990-04-30

1991-11-12

Stodola, Daniel P.

Winding, tensioning, or guiding

Reeling device

Fishing rod reel

242 683, 192 41005, 192 81C, B65H 1610, G11B 1532, F16D 1106

Patent

active

050641379

ABSTRACT:
The fixed torque spring clutch of the present invention has a first rotor and a second rotor. The rotation of one rotor can be transmitted to the other rotor by a coil spring. The first rotor has a shaft section, the coil spring has a clamping section winding round the shaft section, and a non-clamping section arranged in spaced circumferential relation with the outer face of the shaft section. The second rotor has a holding piece and releasing piece arranged in spaced circumferential relation thereon. The holding piece engages the non-clamping section of the coil spring to increase the torque it applies to the shaft section. The releasing piece then engages the clamping section of the coil spring to decrease the torque it applies to the shaft section. The cooperating action of the holding piece and releasing piece on, respectively, the non-clamping and clamping sections of the coil spring results in maintenance of a prescribed fixed torque on the shaft section. The first rotor constitutes a driving member and the second rotor a load, or vice versa. The fixed torque spring clutch can be utilized in a winder such as a tape recorder winder.

REFERENCES:
patent: 2723013 (1955-11-01), Roger et al.
patent: 2833383 (1958-05-01), Christensen
patent: 2922220 (1960-01-01), Sacchini
patent: 3442359 (1969-05-01), Atchison
patent: 4133497 (1979-01-01), Rothlisberger
patent: 4527683 (1985-07-01), Mathews
patent: 4830151 (1989-05-01), Numata

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