Communications: electrical – Selective – Having indication or alarm
Patent
1978-07-21
1980-05-06
Caldwell, Sr., John W.
Communications: electrical
Selective
Having indication or alarm
73188, 73189, 340 25, 340694, G08G 500, H04B 726
Patent
active
042019737
ABSTRACT:
Airport landing indicator apparatus designed basically for remote airports and landing fields including means responsive to wind direction and a pair of runway locators, in the form of lighted directional arrows, located at opposing ends of a runway. Wind direction determines which of the arrows will be lit for maximum safety in landing. Each of the runway locators includes a multiplicity of high intensity lamps forming an outline of a first arrow and a multiplicity of low intensity lamps contained within the confines of the high intensity lamps forming a second arrow. All lamps of a particular runway locator may be turned on by radio control from an approaching aircraft. The high intensity lamps, necessary for long distance observation, are automatically turned off by means of a photoelectric cell actuated by landing lights of the approaching aircraft to prevent temporary blindness. The apparatus may also contain a lighted specific wind direction indicator and a wind velocity indicator.
REFERENCES:
patent: 1342860 (1920-06-01), Mortimer et al.
patent: 1475075 (1923-11-01), Macy
patent: 1496486 (1924-06-01), Pedu
patent: 1644547 (1927-10-01), Smith
patent: 1776111 (1930-09-01), Donaldson
patent: 2355607 (1944-08-01), Shepherd
patent: 3117299 (1964-01-01), Lemm et al.
patent: 3122721 (1964-02-01), Liu et al.
"Automatic Airport Lights Send Out Beams at Whims of Wind", The New York Telegram, Oct. 1929, p. 18.
Jackson Theodore
Johnson Ken
Caldwell Sr. John W.
Groody James J.
Horton Paul F.
Jackson Theodore
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