Electric lamp and discharge devices: systems – Time-controlled
Patent
1982-09-30
1984-11-13
Dixon, Harold
Electric lamp and discharge devices: systems
Time-controlled
307234, 307510, H05B 3702
Patent
active
044828454
ABSTRACT:
A method for preventing the accidental activation of controls both electrical and mechanical such as switches, buttons, levers, triggers, etc. This consists of requiring the user to activate the control two or more times within a predesignated time period (usually very short) before the control will perform its control function. The method can be used for safety purposes such as preventing firearm triggers from being tripped accidentally and turning machines on by mistake. Or it can be used for convenience such as with a lamp that will only turn on or off when a physical object such as a hand is placed near it twice or more within a short time span. It is ideal, as mentioned above, for making proximity switches more practical because they no longer can be triggered accidentally with ease as is possible in their present forms. One electrical means of performing this method is shown and described in this patent application, but many means can be used.
REFERENCES:
patent: 3226680 (1965-12-01), Koller et al.
patent: 3500369 (1970-03-01), Kellem
patent: 3634869 (1972-01-01), Hsueh
patent: 3940632 (1976-02-01), Padgug
Roylance Byron D.
Roylance William H.
Dixon Harold
Foster Lynn G.
Roylance William H.
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