Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1989-04-03
1990-05-29
Haroian, Harry N.
Geometrical instruments
Straight-line light ray type
Structurally installed
124 87, F41G 146, F41G 134
Patent
active
049283944
ABSTRACT:
A sight base includes an upright pair of guides on which sight pin carriers are slidably mounted. Fiber optics are carried by the base with a fiber optic end, constituting an illuminated sight bead, carried by a tubular sight pin on each sight pin carrier. The remaining ends of the fiber optics are bundled in a positionable sleeve for light gathering purposes.
REFERENCES:
patent: 2155169 (1939-04-01), Moses
patent: 3945127 (1976-03-01), Spencer
patent: 4166324 (1979-09-01), Carollo et al.
patent: 4170071 (1979-10-01), Mann
patent: 4177572 (1979-12-01), Hindes
patent: 4400887 (1983-08-01), Mason
patent: 4535747 (1985-08-01), Kudlacek
patent: 4603942 (1986-08-01), Chang et al.
Givnan, Jr. James D.
Haroian Harry N.
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