Door opening cable system with cable slack take-up

Details Door opening cable system with cable slack take-up Door opening cable system with cable slack take-up

1993-01-25

1994-06-28

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49138, E05F 1100

Patent

active

053235703

ABSTRACT:
A van door slidable in tracks (16, 18 and 20). An operating module is mounted inside the van adjacent center track 18. A front cable attached to drive pulley (144) extends through guide assembly (54) to hinge and roller assemble (26). A rear cable attached to drive pulley (136) extends through guide assembly (56) to hinge and roller assembly (26). The drive pulleys (136 and 144) each have a large diameter spiral cable groove (164), a small diameter cable groove (208) and a transition cable groove (210). A motor rotates the drive pulleys. The small diameter cable grooves drive the door when the door is in the forward portion of the tracks. The large diameter spiral cable grooves drive the door when the door is in the center and rear portions of the track. Fixed idler rollers (226 and 254) are positioned relative to the cable drive pulleys to insure that the total cable in the continuous cable loop is substantially the same when the cable is driven by the small diameter cable grooves as when the cable is driven by the large diameter spiral cable grooves. A cable tension system (220) maintains cable tension. A slack cable take-up pulley (174) on the drive pulley (136) takes up slack cable to set cable tension and is then locked in position.

REFERENCES:
patent: 5025591 (1991-06-01), Deland et al.
patent: 5046283 (1991-09-01), Compeau et al.
patent: 5138795 (1992-08-01), Compeau et al.
patent: 5233789 (1993-08-01), Priest et al.

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