E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 1/08 (2006.01) E05D 15/22 (2006.01) E05D 13/00 (2006.01)
Patent
CA 2356414
The present invention is an apparatus and method of assembling a block and tackle counter balance for windows that reduces the cost of manufacture and installation. In particular, the balance provides vertical support to a window sash using a semi-rigid channel, a top shoe for insertion into one end of the semi- rigid channel, and a bottom shoe for insertion into another end of the semi-rigid channel. Connected to the top shoe is a spring, and a block and tackle pulley assembly is connected between the bottom end of the spring and the bottom shoe, wherein a cord from the pulley assembly extends outward from the bottom shoe for connection to the window sash.
Damani Manish
Deal International Inc.
Sim & Mcburney
LandOfFree
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