E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 11/04 (2006.01) E05D 15/24 (2006.01) E05D 15/16 (2006.01)
Patent
CA 2333865
A counter weight door has a plurality of counter weights each associated with a respective one of the panels and an interconnecting spring connecting each of the weights to the next. At least one of the counter weights has a cradle which is arranged to receive a plurality of weighted members. The spring arrangement connecting one counter to the next is housed within the cradle and includes a shaft on which the spring is mounted. The door has a pulley system which has a first pulley on one side of the door, a second double pulley on the other side of the door, a first cable fixed at a first end to the door extending through the first pulley and a second cable fixed at a first end to the door extending through the second pulley to the counter weight system.
Braun Dennis
Enns Abram H.
Klassen Richard
Neufeld Len
Reimer Greg
Battison Williams Dupuis
Braun Dennis
Enns Abram H.
Hanover Door Systems (1996) Inc.
Klassen Richard
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