Roller doors

Details Roller doors Roller doors

E - Fixed Constructions

06

B

160/8

E06B 9/68 (2006.01) E06B 9/56 (2006.01) E06B 9/62 (2006.01)

Patent

CA 1296614

ABSTRACT OF DISCLOSURE A roller door assembly has means for tensioning same wherein a load is applied to a bottom edge of the roller and means for counterbalancing the weight of the door wherein a load is applied to the roller, the loads exerted by both said means being dependent on the amount of door off the roller.

556680

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