Sheet-material associating – Associating or disassociating – Signature associating
Patent
1988-03-16
1989-08-15
Jones, W. Gary
Sheet-material associating
Associating or disassociating
Signature associating
210106, 210121, 210138, 210159, B01D 3502, B01D 3516, E02B 508
Patent
active
048571822
ABSTRACT:
Bar screen apparatus of the type having a motorized rake assembly, that mounts an electric drive motor with associated electrical components which moves the assembly along a guide frame in a closed, approximately vertical path from an upper parking position to and through a lower reversing direction position, is imporved by adding a protection device to prevent the drive motor and associated electrical components from being submerged in a stream of sewage passing the apparatus at an abnormally high level. Such protection device includes a detector unit to sense the presence of liquid that may exist at or above a predetermined level, a monitor unit for determining where the motorized rake assembly is along its travel path during operation of the apparatus, and a logic unit for determining by input from the monitor unit whether the motorized rake assembly should move in a forward direction or in a reverse direction along its travel path from a given location to return with the least amount of travel from the given location. In preferred embodiments, the protection device also addresses overload problems.
REFERENCES:
patent: 2092623 (1937-09-01), Kuster
patent: 2379615 (1945-07-01), Walker
patent: 3591006 (1971-07-01), Daferner et al.
patent: 4561975 (1985-12-01), Schloss, Jr.
Infilco Degremont Inc., "Climber Screen.RTM. Mechanically Cleaned Bar Screen", Sep. 1986.
Infilco Degremont Inc., "Climber Screen (Standard Type)", p 803-1, Jun. 1983.
Tom M. Pankratz, "Screening Equipment Handbook", Technomic Publishing Co., Inc., 1986, pp. 114-119, 128-135.
Evans L. Sue
Infilico Degremont Inc.
Jones W. Gary
Palmer Carroll F.
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