Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Reexamination Certificate
2006-04-25
2006-04-25
Crawford, Gene O. (Department: 3651)
Conveyors: power-driven
Conveyor section
Pusher conveyor and separate load support surface
Reexamination Certificate
active
07032743
ABSTRACT:
The invention relates to a conveyor pan (150) for underground face and gate conveyors, with a bottom run (102) and a top run (103) for the guidance of a scraper of a scraper chain, with a frame work construction (101) which has side walls (110) comprising cast parts firmly joined to each other, with an intermediate flange (111) and an upper moulded flange lug (112) extending outwards from it and a lower moulded flange arm (113) as well as a moulded foot flange (120) extending inwards and bordering the bottom run partly to the side. In accordance with the present invention the cast part (110) has at least one step (115) on the inner wall (114) of the intermediate flange (111) for supporting and welding on a plate (105B) forming an intermediate plate, below which the intermediate arm (111) and the flange lug (120) form a profile strengthening (149), and above which the intermediate arm (131) borders to the side an accepting space for the acceptance of an exchangeable tray (104) having rolled side profiles (180) welded to a conveyor base (184).
REFERENCES:
patent: 3944061 (1976-03-01), Braun et al.
patent: 3946860 (1976-03-01), Krohm et al.
patent: 4667811 (1987-05-01), Schoop et al.
patent: 5871261 (1999-02-01), Bandy et al.
patent: 4023873 (1992-02-01), None
patent: 2095195 (1982-09-01), None
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patent: WO 92/07780 (1992-05-01), None
Broszat Martin
Cobley John
Fischer Frank
Hefferan Alfred
Losbrodt Olaf
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Crawford Gene O.
DBT GmbH
Deuble Mark A.
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