Communications: electrical – Systems – Portable self-contained
Patent
1975-11-10
1977-08-16
Caldwell, John W.
Communications: electrical
Systems
Portable self-contained
40129A, 40130B, 240 1063, 340105, 340331, G08B 500, H05B 4100
Patent
active
040429199
ABSTRACT:
A hand-held illuminated sign has a one piece frame comprising a perimetral wall and perimetral flanges extending inwardly from the wall edges. Translucent sign panels are fastened to the flanges. An elongate lighting member has a bulbous housing at one end that threadedly receives an annular cap. The frame wall has a portion defining an opening for tightly receiving the housing. The cap is threaded on the housing and tightly against the wall portion to hold the frame and lighting member in unified engagement. A strobe light, in combination with the sign illuminating light, is secured to the wall to emit intermittent, high intensity light energy to signal the presence of the sign bearer from distances greater than those at which the sign illumination is perceivable.
REFERENCES:
patent: 1764426 (1930-06-01), Townsend
patent: 1848951 (1932-03-01), Haynes
patent: 2035841 (1936-03-01), Signor
patent: 2717336 (1955-09-01), Craddock
patent: 2838744 (1958-06-01), De Wald
patent: 3142038 (1964-07-01), Jackson
patent: 3279110 (1966-10-01), Lelicoff
patent: 3383675 (1968-05-01), Allardice et al.
patent: 3500378 (1970-03-01), Pickering et al.
patent: 3519984 (1970-07-01), Zychal
patent: 3810091 (1974-05-01), Hoover
patent: 3821860 (1974-07-01), Patty
Caldwell John W.
Groody James J.
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