Control mechanism for screen rollers

Details Control mechanism for screen rollers Control mechanism for screen rollers

1996-03-04

1997-11-25

Knight, Anthony

Fences

Miscellaneous

256 24, 403105, 160300, 160302, 188 823, E04H 1700

Patent

active

056903170

ABSTRACT:
A spring roller-mounted pull-out screen for use as a child safety barrier across a doorway has a control mechanism which prevents the screen from extending when impacted by a child. The roller is locked against rotation in a direction allowing the screen to unwind unless released by a manual push-button. The roller automatically locks after the screen has been extended and fitted in place. The automatic locking mechanism operates by a friction drive which releases a pawl to spring into engagement with a ratchet wheel when the screen has been pulled out and released.

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