Conveyors: power-driven – Conveyor having impinging fluid to feed – shift or discharge... – Having cleaning means
Patent
1977-03-04
1978-08-08
Blunk, Evon C.
Conveyors: power-driven
Conveyor having impinging fluid to feed, shift or discharge...
Having cleaning means
B65G 4500
Patent
active
041051092
ABSTRACT:
A scraper apparatus for cleaning the operating surface of an endless conveyor belt is disclosed as mounted in scraping engagement with the belt's operating surface for limited pivotal swinging movement from a belt engaging position to a safety and maintenance position. The apparatus has a biasing portion formed as a pressurized bladder carried by a support member mounted transversely of the belt which individually biases each member of an aligned series of scraper blades into continuous scraping engagement with the belt so as to locally compensate for worn belt areas and worn scraper blades or for obstructions on the belt occurring at one scraper blade without preventing or disturbing continued scraping action of the next adjacent scraper blades. Such localized biasing maintains a constant scraping pressure at each scraper blade and allows the series of scraper blades to float with the belt as it rises and sags with tension variations. The separate scraper blades are readily replaceable without removal of associated fasteners.
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patent: 2545882 (1951-03-01), Hall
patent: 2545883 (1951-03-01), Hall
patent: 2909272 (1959-10-01), Kercman et al.
patent: 3342312 (1967-09-01), Reiter
patent: 3722667 (1973-03-01), Olson
patent: 3860106 (1975-01-01), Cooley
patent: 3913728 (1975-10-01), Pott
patent: 3952863 (1976-04-01), Schattauer
patent: 3957155 (1976-05-01), Enchelmaier
patent: 3994388 (1976-11-01), Reiter
patent: 4036351 (1977-07-01), Reiter
Blunk Evon C.
Thomson Richard K.
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