Patent ID: 6293053
Filing Date: 2001-09-25
Classification: E04H

Abstract:
A non-friction direct drive power system for extending and retracting a telescopic row seating system, comprising:a non-vertically moving drum operably anchored to a drum frame, wherein said non-vertically moving drum has at least two drum shafts rotatably engaged to said non-vertically moving drum;a plurality of interconnected drive carriages adapted for connection to a telescopic seating system to extend and retract said telescopic seating system, said each drive carriages being configured to selectively mateably wind directly onto and off from said non-vertically moving drum without overlapping as said non-vertically moving drum is rotated;a non-friction direct drive power system comprising: a motor, a motor frame, at least two motor shafts extending from each side of said motor;a drive shaft connected to said plurality of coupling means simultaneously to at least one drum shaft and at least one motor shaft thereby providing motion to rotate said non-vertically moving drum; anda plurality of coupling means for coupling each of said at least two drum shafts to a drive shaft and each of said at least two motor shafts to said drive shaft thereby enabling said non-vertically moving drum to rotate and thereby extend and retract said drive carriages so that an extended portion of said drive carriages is substantially continuously tangentially aligned with a wound portion of said drive carriages on said non-vertically moving drum.