Movable or removable closures – Distortable; e.g. – flexible strand-type barricade
Patent
1980-03-04
1982-06-08
Downey, Kenneth
Movable or removable closures
Distortable; e.g., flexible strand-type barricade
49 58, 49280, 429 8, E01F 1300
Patent
active
043332684
ABSTRACT:
A road barrier system prevents automobile access by means of a chain array or swinging gate held in place across a roadway between two posts. A motor driven mechanism operates the barrier in response to a key or security access code in two modes of operation, one being open access and the other automatically opening and reclosing the gate after a preset time period.
Features include quick operation, energy efficiency, self-powered solar energy as the sole energy input, breakaway features to prevent serious damage to the control equipment upon unauthorized entry by force and high-reliability low-maintenance simple equipment useful in country locations without access to power line energy sources. In this respect, the barrier in one embodiment is built as a part of a cattle guard assembly.
REFERENCES:
patent: 1468471 (1923-09-01), Harsen
patent: 1529744 (1925-03-01), Keenan
patent: 1642875 (1927-09-01), Fitch et al.
patent: 1665157 (1928-04-01), Dahnke
patent: 2170467 (1939-08-01), Anderson
patent: 3022590 (1962-02-01), Ohlhausen
patent: 4108405 (1978-08-01), Gibson
Brown Laurence R.
Downey Kenneth
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