Driving and tensioning device for a flexible protective member s

Details Driving and tensioning device for a flexible protective member s Driving and tensioning device for a flexible protective member s

1994-09-23

1996-08-20

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Roll type

With rotating means

160265, A47G 502, A47H 100, E06B 956

Patent

active

055470092

ABSTRACT:
A driving and tensioning device for a flexible protective member such as a strip, curtain or skirt includes a rolling-up driving-shaft and an unrolling driving-shaft which are driven by electric motors provided with a brake activated in order not to brake any longer when one of these motors is under power. This driving and tensioning device furthermore includes a device for controlling the power supply to the motors so that a torque is generated by one of the motors withstanding the operation of the other motor, during the phase of either unrolling or rolling-up of the flexible protective member.

REFERENCES:
patent: 2183495 (1939-12-01), Laufersweiler
patent: 2347845 (1944-05-01), Schane
patent: 4766941 (1988-08-01), Sloop et al.
patent: 4815515 (1989-03-01), Lee
patent: 5088543 (1992-02-01), Bilbrey
patent: 5249616 (1993-10-01), Yen
patent: 5355927 (1994-10-01), McKeon
French Search Report.

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