Conveyors: power-driven – Conveyor having impinging fluid to feed – shift or discharge... – Having cleaning means
Reexamination Certificate
2008-12-03
2010-06-22
Bidwell, James R (Department: 3651)
Conveyors: power-driven
Conveyor having impinging fluid to feed, shift or discharge...
Having cleaning means
Reexamination Certificate
active
07740127
ABSTRACT:
A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to the main frame, and a damper mechanism coupled at one end to the main frame and at another end to the scraping member. A mounting mechanism is attached to the main frame for providing linear and rotational movement of the main frame and the associated scraping member and damper mechanism. The damper mechanism includes a damper having a piston and a housing having a fluid chamber. The viscosity of the fluid within the fluid chamber is selectively changeable to change the damping characteristics of the damper mechanism to accommodate changes in operating conditions.
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G. Lodewijks and C.R.J. Versteegh, Implementing Automatic Condition Monitoring Techniques on Belt Scraper Systems, Bulk Solids Handling, 2006, pp. 252-257, vol. 26.
Swinderman R. Todd
Vava Cristian
Bidwell James R
Martin Engineering Company
Smith Clyde L.
Thompson & Coburn LLP
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