Power system for extending and retracting a structure

A power system for extending and retracting a telescopic seating structure, wherein the telescopic seating structure is supported by a collapsible assembly movable between an extended position wherein the telescopic seating structure is extended for use, and a retracted position wherein the telescopic seating structure is collapsed, the profile of the telescopic seating structure being greatly reduced in the retracted position as compared to the extended position, said power system comprising:

• a rotatable drum fixedly positioned within and relative to the collapsible assembly of the telescopic seating structure;
• and
• a plurality of juxtaposed trolley members operably interconnected to the telescopic seating structure and said drum, said plurality of trolley members configured to move along the floor in a direction between the retracted position and the extended position, each trolley member of said plurality of trolley members being slidably interconnected with each adjacent trolley member whereby when the telescopic seating structure is in the extended position, said plurality of trolley members are fully extended essentially end to end, and are essentially side by side when the telescopic seating structure is in the retracted position, said trolley members being actuated for movement by rotation of said drum to thereby drive the telescopic seating structure to and between the extended position and the retracted position.

A power system for extending and retracting a telescopic seating structure, comprising:

• a frame positioned below the telescopic seating structure;
• a rotatable drum attached to said frame;
• a primary telescoping member attached to said frame;
• at least one intermediate telescoping member slidably interconnected to said primary telescoping member, said at least one intermediate telescoping member configured to move along the floor;
• a terminal telescoping member slidably interconnected to said at least one intermediate telescoping member, said terminal telescoping member configured to move along the floor, said terminal telescoping member attached to the telescopic seating structure;
• and
• a power mechanism configured to rotate said drum in a selected direction, whereby rotating said drum selectively extends and retracts said at least one intermediate telescoping member and said terminal telescoping member horizontally between an extended position and a retracted position.

A power system for extending and retracting a telescopic seating structure, comprising:

• a frame positioned beneath the telescopic seating structure;
• a rotatable drum supported on said frame;
• a plurality of telescoping members adapted for connection to the telescopic seating structure, said plurality of telescoping members configured to move along the floor;
• a transmitting member trained about said drum and each telescoping member of said plurality of telescoping members;
• a power mechanism supported by said frame, said power mechanism operably attached to said drum, said power mechanism configured to rotate said drum in a selected direction, whereby rotating said drum selectively extends and retracts said plurality of telescoping members between an extended position and a retracted position;
• and
• a cable guide assembly in operational connection with said drum, said cable guide assembly movably attached to said frame, said cable guide assembly positioned below said drum, said cable guide assembly maintaining the orientation of said transmitting member such that each winding of said transmitting member around said drum is positioned on the surface of said drum.