Road structure – process – or apparatus – Traffic steering device or barrier
Patent
1986-03-21
1990-04-17
Massie, Jerome W.
Road structure, process, or apparatus
Traffic steering device or barrier
49 33, 49 49, 49131, 49133, 49265, 404 9, 244110C, 244110F, E01F 1300
Patent
active
RE0332011
ABSTRACT:
A vehicle traffic-way controller of retractile barrier configuration wherein activation and control is by hydraulics in the form of a pressure source applied from a motor driven pump and directed by a valve to opposite ends of a double acting cylinder and piston actuator to extend and retract the barrier, there being switch control with positive positioning of the barrier and with impact absorbing protection for the hydraulics and structure.
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Massie Jerome W.
Maxwell William H.
Smith Matthew
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