Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1986-09-04
1987-11-03
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
273416, G01S 108
Patent
active
047046120
ABSTRACT:
A method and apparatus for tracking an arrow and/or game animal shot in the sport of archery hunting is disclosed. The arrow contains a radio-frequency transmitter in a circuit also containing a power supply, and an inertia-activation switch in the shaft thereof. The circuit is of a size and weight so as not to alter the flight characteristics of the arrow. Once shot, the inertia-activation switch momentarily closes, causing the transmitter to transmit a signal. The archer carries a radio-frequency receiver with a directional antenna and a magnitude indicator and earphone coupled thereto to allow tracking and retrieval of the arrow and game animal.
REFERENCES:
patent: 3150875 (1964-09-01), Searles
patent: 3351347 (1967-11-01), Smith et al.
patent: 3580176 (1971-05-01), Boswell
patent: 3790948 (1974-02-01), Ratkovich
patent: 4421319 (1983-12-01), Murphy
Boy Dan D.
Frederick Harold H.
Blum Theodore M.
Murray Thomas H.
Poff Clifford A.
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