192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1987-01-28
1988-10-04
Bonck, Rodney H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
160331, 192142R, F16D 4300, A47H 100
Patent
active
047750391
ABSTRACT:
An electrically-operated curtain drawing/undrawing mechanism comprises a reduction gear connected on the output shaft side of a motor and a driving pulley connected to the reduction gear through an electromagnetic clutch, and further includes an operating switch for sending an operating signal to an electromagnetic clutch circuit in which the electromagnetic clutch is incorporated, and a control logic circuit for sending an operating signal for the motor to the electromagnetic clutch circuit, the electromagnetic clutch circuit being provided for sending the operating signal for sending the operating signal for the electromagnetic clutch to the control logic circuit. Ball bearings are incorporated in the respective bearing portions of a driven pulley and leading curtain runner's wheels.
REFERENCES:
patent: 2311321 (1943-02-01), Zigan
patent: 2314019 (1943-03-01), Shaw
patent: 2366739 (1945-01-01), McCoy
patent: 2468453 (1949-04-01), Mallentjer
patent: 2568808 (1951-09-01), Johansen
patent: 2936052 (1960-05-01), Snarr
patent: 3042001 (1962-07-01), Dubie et al.
patent: 3429298 (1969-02-01), Thomason
Bonck Rodney H.
Yokota Co., Ltd.
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