Computer graphics processing and selective visual display system – Plural physical display element control system – Optical means interposed in viewing path
Patent
1991-12-19
1996-09-17
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Optical means interposed in viewing path
345211, 3408154, G09G 300
Patent
active
055572944
ABSTRACT:
A new life saving device used as an emergency signal consisting of a light weight, shirt pocket size, hand powered source of bright, flashing light and high pitched sound which, when carried by persons who become injured, overboard, lost, travelers in an accident, will greatly enhance efforts to rescue them in daytime and avoid the common practice of abandoning search after dark. The light weight and small size are achieved by combining in one device a piezoelectric (ref. Cady) element and a xenon type flash tube principle, but in both derivations and developments somewhat different. The mechanics of hand operation are designed to require minimum hand effort and to obtain good reliability. One piece case adds to reliability. Change of light color at intervals aids recognition as a distress signal. The size, weight and short life of batteries are avoided, as they are not used in this invention.
REFERENCES:
patent: 2268476 (1941-12-01), Duncan
patent: 2317713 (1943-04-01), Aufiero
patent: 3558903 (1971-01-01), Yamano
patent: 3665446 (1972-05-01), Burm et al.
patent: 3808418 (1974-04-01), Conard et al.
patent: 4156825 (1979-05-01), Kondo et al.
patent: 4171811 (1979-10-01), Meyer et al.
patent: 4241332 (1980-12-01), Farque
patent: 4282681 (1981-08-01), McCaslin
patent: 4523261 (1985-06-01), West
patent: 4644328 (1987-02-01), Szymansky et al.
patent: 4743028 (1988-05-01), Harrison
patent: 4853580 (1989-08-01), Sula
patent: 4904222 (1990-02-01), Gastgeb et al.
patent: 5065067 (1991-11-01), Todd et al.
patent: 5132659 (1992-07-01), Kuo
Hjerpe Richard
Liang Regina
LandOfFree
Emergency signal device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emergency signal device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency signal device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-416395