Electronic rangefinder for archery

Details Electronic rangefinder for archery Electronic rangefinder for archery

1984-12-17

1986-10-21

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

Process

33265, 33241, 124 87, F41G 100

Patent

active

046177418

ABSTRACT:
A rangefinding device wherein a series of movable lines are created electronically via the use of a liquid crystal display and associated circuitry. When a target of a known size, such as a deer, is "bracketed" exactly between two of these lines, the correct yardage is indicated on another portion of the liquid crystal display. The device has utility for both hunting and target purposes. The device is battery operated and is small enough and light enough to be mounted on any standard recurve bow, compound bow, or crossbow.

REFERENCES:
patent: 3696517 (1972-10-01), Larson
patent: 3945127 (1976-03-01), Spencer
patent: 4170071 (1979-10-01), Mann et al.
patent: 4220983 (1980-09-01), Schroeder
patent: 4325190 (1982-04-01), Duerst
patent: 4495705 (1985-01-01), Kowalski et al.

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