Sign for use in entrance of hazardous confined space

Details Sign for use in entrance of hazardous confined space Sign for use in entrance of hazardous confined space

1997-06-30

1999-04-13

Green, Brian K.

Card, picture, or sign exhibiting

Signs

Sign support

4012407, 283 45, G09F 1500

Patent

active

058932283

ABSTRACT:
The apparatus includes a sign and clips which support it. The sign is installed against the wall of the opening into a hazardous, confined space. The sign is a strip of flexible signboard with indicia applied to both broad surfaces. There are several presentations of the message of the sign on each side with adjacent presentations inverted. The clips are attached to the wall of the opening so that the sign is supported at its lower edge to prevent it from falling into the space. The ends of the sign overlap so that a sign of one length is usable in a range of sizes of manholes.

REFERENCES:
patent: 684886 (1901-10-01), Tobey
patent: 1735836 (1929-11-01), Pease
patent: 2001679 (1935-05-01), Haughey
patent: 3002306 (1961-10-01), Ruff, Sr.
patent: 3237330 (1966-03-01), Dinstbir
patent: 3322381 (1967-05-01), Bubb
patent: 4019269 (1977-04-01), Vix
patent: 4575125 (1986-03-01), Angier
patent: 4750668 (1988-06-01), Behne et al.
patent: 5647154 (1997-07-01), Groves

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