Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Reexamination Certificate
2011-04-19
2011-04-19
Bidwell, James R (Department: 3651)
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
Reexamination Certificate
active
07926641
ABSTRACT:
The invention relates to a pallet actuation system moving the pallets of a moving walkway through drive chains directly engaging the lower part of the chains of traction links. The drive chain has separate drive rollers which are made of deformable and elastic materials. The links of the traction chains are connected together by connecting shafts and have teeth and claws in the lower part to mesh with the drive chain and the rollers.
REFERENCES:
patent: 3107773 (1963-10-01), Clemetsen et al.
patent: 3677388 (1972-07-01), Boltrek et al.
patent: 6527099 (2003-03-01), Ostermeier et al.
patent: 6540060 (2003-04-01), Fargo et al.
patent: 2008/0053788 (2008-03-01), Ishikawa et al.
patent: WO 2004/054919 (2004-07-01), None
patent: WO 2004/063078 (2004-07-01), None
Gonzalez Alemany Miguel Angel
Gonzalez Pantiga Juan Domingo
Ojeda Arenas José
Bidwell James R
Merchant & Gould P.C.
Thyssenkrupp Elevator (ES/PBB) Ltd.
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