Communications: electrical – Digital comparator systems
Patent
1976-05-07
1978-04-04
Yusko, Donald J.
Communications: electrical
Digital comparator systems
116 63P, 256 64, E01F 900, E04H 1700, G08B 2300
Patent
active
040830330
ABSTRACT:
A traffic barrel constructed of a lightweight material consisting of two elements that may be readily assembled and stabilized in position and readily separated upon a substantial impact. The traffic barrel may mount one or two warning lights for nighttime traffic channelization purposes. The traffic barrel may have a "D" cross-section to prevent its rolling along a surface and have a stepped configuration to permit stacking of the two elements thereof.
REFERENCES:
patent: D237473 (1975-11-01), Fitch
patent: 2719505 (1955-10-01), Blumenthal
patent: 2869504 (1959-01-01), Andrews et al.
patent: 3386409 (1968-06-01), Dawson
patent: 3475009 (1969-10-01), Brown
patent: 3952690 (1976-04-01), Rizzo et al.
Florsheim James M.
Kulp Jack H.
DaRin Edward J.
Royal Industries, Inc.
Yusko Donald J.
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