Superior system and method for determining the position of a...

Details Superior system and method for determining the position of a... Superior system and method for determining the position of a...

2005-02-08

2005-02-08

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Straight-line light ray type

Alignment device

Reexamination Certificate

active

06851198

ABSTRACT:
Measuring the required distance necessary for a first down in the sport of football. The apparatus includes a ten yard marker pole with an attached laser apparatus. The laser apparatus emits light in the blue-green wavelength and is capable of emitting laser beam across the entire width of the field onto a target, to aid an official in determining if a first down has occurred or not.

REFERENCES:
patent: 3300861 (1967-01-01), Lilly
patent: 3482317 (1969-12-01), Truax
patent: 3738014 (1973-06-01), Sproul, Sr.
patent: 3752588 (1973-08-01), Chapman
patent: 3985356 (1976-10-01), Carlock
patent: 4090708 (1978-05-01), McPeak
patent: 4232450 (1980-11-01), Lynn
patent: 5067245 (1991-11-01), Millard
patent: 5113589 (1992-05-01), Randolph
patent: 5214491 (1993-05-01), Snowden

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