Geometrical instruments – Straight-line light ray type – Alignment device
Patent
1993-10-20
1995-04-04
Fulton, Christopher W.
Geometrical instruments
Straight-line light ray type
Alignment device
33533, 33645, 378 59, 378205, G01B 1500, G01B 1127
Patent
active
054025770
ABSTRACT:
The inspection aid 10 disclosed and claimed herein is characterized by a shape-mutable, radiographically non-absorptive appliance which includes an individual upper 28 and pair of lower 30 and 32 pins arranged in adjacent, right triangle relation and inserted transversely through either side of the appliance. An aspect central to the utility of the invention is the midpoint location of the upper pin between the lower pins.
REFERENCES:
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patent: 2496099 (1950-10-01), Leto
patent: 2581431 (1952-01-01), Nelsen
patent: 4048507 (1977-09-01), De Gaston
patent: 4053782 (1977-10-01), Grass
patent: 4608573 (1986-08-01), Paullin
patent: 5187728 (1993-02-01), Vaughn
Fulton Christopher W.
McDonnell Douglas Corporation
Walsh, Jr. Joseph E.
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