Communications: electrical – Traffic control indicator – Portable
Patent
1991-03-11
1992-06-16
Ng, Jin F.
Communications: electrical
Traffic control indicator
Portable
340908, 340953, B60Q 700
Patent
active
051227975
ABSTRACT:
A portable warning light system is made up of a main frame member which is pivotally mounted on a trailer, a pair of light bars are pivotally connected on the main frame for movement in a plane parallel to the frame between a retracted or travel position and an extended position, and the main frame can be selectively positioned at different angles between the vertical and horizontal.
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Ng Jin F.
Reilly John E.
Tumm Brian R.
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