Motorised barrier roller

Details Motorised barrier roller Motorised barrier roller

2009-06-12

2011-12-20

Ip, Paul (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to thermal conditions

C318S280000, C318S300000, C318S445000, C361S023000

Reexamination Certificate

active

08080962

ABSTRACT:
A fire or smoke barrier1has a curtain2deployed from a motorized roller3mounted in a head box4. Remote from the head box and connected to the motor via a cable5is a motor controller circuit6.A short circuit protection circuit9is connected to the motor within the roller at the motor end of the cable5. On the motor side of the circuit9is a retarder circuit10connected across the motor terminals.The short circuit circuit comprises a pair of relays11, 12, arranged with their normally open contacts111,121arranged in parallel. A drive voltage one11of the relays has its winding112across the input lines14of the circuit and the emf one12of the relays has its winding122across the output lines15of the circuit. The input lines14are connected to the cable lines51,52and the output lines15are connected to the motor terminals16, via the retarder10.

REFERENCES:
patent: 7129662 (2006-10-01), D'ayot
patent: 7538504 (2009-05-01), D'Ayot
patent: 7692398 (2010-04-01), Bruno
patent: 2006/0033460 (2006-02-01), D'ayot
patent: 2006/0132072 (2006-06-01), D'Ayot
patent: 2006/0284590 (2006-12-01), Bruno
patent: 2009/0258606 (2009-10-01), Ramus
patent: 2010/0127645 (2010-05-01), Gronbach

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