Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Reexamination Certificate
2005-05-31
2005-05-31
Tran, Khoi H. (Department: 3651)
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
C198S333000
Reexamination Certificate
active
06899216
ABSTRACT:
An escalator has steps shaped (1) to negotiate curves. The steps are suitably linked (4)(5)(6), guided (3)(10)(11), contained and powered so that the escalator can rise, fall, follow a horizontal path, be straight or curved in any predetermined sequence within the design parameters. The steps remain usable in both the flow and return paths. Shields are fitted to guard against entrapment of shoes or other apparel between the moving and stationary parts. For boarding or alighting safely, straight horizontal lengths may be included with appropriate means for passengers crossing from or to a stationary floor.
REFERENCES:
patent: 2823785 (1958-02-01), Hefti
patent: 3395648 (1968-08-01), Karr et al.
patent: 3515253 (1970-06-01), Yamada
patent: 3878931 (1975-04-01), Luna
patent: 4411352 (1983-10-01), Kettle
patent: 4662502 (1987-05-01), Nakatani
patent: 4746000 (1988-05-01), Nakatani et al.
patent: 4809840 (1989-03-01), Nakatani
patent: 4895239 (1990-01-01), Johnson et al.
patent: 4949832 (1990-08-01), Sansevero
patent: 5033606 (1991-07-01), Matoba et al.
patent: 5158167 (1992-10-01), Pahl
patent: 5165513 (1992-11-01), Nakatani
patent: 5544729 (1996-08-01), Brunn
patent: 345999 (1960-06-01), None
patent: 100 55 982 (2002-06-01), None
patent: 02086590 (1990-03-01), None
patent: 04140297 (1992-05-01), None
patent: wo 09106501 (1991-05-01), None
Deuble Mark A.
DeWitt Ross & Stevens S.C.
Fieschko, Esq. Craig A.
Levytator Limited
Tran Khoi H.
LandOfFree
Escalator for negotiating curves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Escalator for negotiating curves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Escalator for negotiating curves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3382446