Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1976-06-10
1978-04-04
Blunk, Evon C.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
198833, 74245S, B61B 1314
Patent
active
040821730
ABSTRACT:
A drive unit having a toothed endless member for driving a conveyor. The drive unit includes an endless driving chain having tooth-like projections extending outwardly from the driving chain, each tooth-like projection having a bearing surface which coacts with the toothed side of the endless member to drive the endless member in response to movement of the driving chain. The driving chain engages a pair of sprockets to be moved around each in response to the rotation of one of the sprockets by a drive motor. Each tooth-like projection is inserted into or removed from a respective groove defined by the teeth of the endless member when that tooth-like projection is advanced around a circular path defined by the endless chain driven around one of the sprockets. During its transfer from the circular path to a linear path of travel between the sprockets the bearing surface of each tooth-like projection is urged into bearing against the forward tooth of the endless member defining the respective groove in which its tooth-like projection is inserted. A load support section disposed between the sprockets coacts with the drive chain to maintain their bearing surfaces in bearing with the teeth of the endless member as the bearing elements are advanced between the sprockets.
REFERENCES:
patent: 1956942 (1934-05-01), Belcher et al.
patent: 1960719 (1934-05-01), Stibbs
patent: 2609086 (1952-09-01), McBride et al.
patent: 2848102 (1958-08-01), Whitney
patent: 3033353 (1962-05-01), Burnett et al.
patent: 3498445 (1970-03-01), Piper
patent: 3677388 (1972-07-01), Boltrek et al.
patent: 3777877 (1973-12-01), Piper
patent: 3877567 (1975-04-01), Sommerfield
patent: 3980173 (1976-09-01), Riggs
patent: 3994390 (1976-11-01), Peterson, Jr. et al.
Blunk Evon C.
Mayer Robert T.
Otis Elevator Company
Thomson Richard K.
LandOfFree
Drive unit for an endless conveyor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drive unit for an endless conveyor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive unit for an endless conveyor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-718810