Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Extensible or expansible inserted coupler or centering means...
Patent
1979-10-25
1984-09-04
Marcus, Stephen
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
Extensible or expansible inserted coupler or centering means...
141287, 141392, 277343, 285 97, B67C 537
Patent
active
044691521
ABSTRACT:
A dust-tight hatch closure assembly for filling railway covered hopper cars having a filling means and a pneumatic seal in the form of an inflatable annulus.
REFERENCES:
patent: 2178494 (1939-10-01), Richardson
patent: 2832378 (1958-04-01), Beavon
patent: 3103958 (1963-09-01), Rath
patent: 3650420 (1972-03-01), Mahaney
patent: 3683976 (1972-08-01), Remane
patent: 3722895 (1973-03-01), Mevissen
patent: 3830267 (1974-08-01), Cass
patent: 4098308 (1978-07-01), Purdum
Hardee Carl L.
Wagner Robert E.
Borg-Warner Chemicals, Inc.
Marcus Stephen
Schlott R. J.
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