Geometrical instruments – Gauge – Straightness – flatness – or alignment
Patent
1991-11-07
1992-06-16
Haroian, Harry N.
Geometrical instruments
Gauge
Straightness, flatness, or alignment
G01B 525
Patent
active
051215497
ABSTRACT:
An archery arrow testing apparatus. The application is comprised of a pair of upright arrow support stands. The stands are separated and held together by means of a multi-part rod structure. The multi-part rod structure is for spacing the stands with the structure having its opposite ends extended into telescoped engagement with the stands. The rod structure is adjustable in length in a longitudinal direction along its axis for varying the distance between the stands. The arrow support stands are each being comprised of a pair of stand halves which are of an identical shape and configuration to enable them to be molded in a single mold structure. Connectors and/or glue secure the mold halves of each of said stands together. Pairs of revolving thin plastic disks are provided. Each of the stands has a mold cavity defined by the halves. Baring connectors mount each of the pairs of the revolving thin synthetic plastic disks inside an associated one of the cavities in radially overlapped relation so as to define an arrow nip between the disks, with the pairs of disks on each of said stands being rotatable relative to said stands enabling an archery arrow to be spun in circumferential orbit on the pairs of the disks in said nips for human eye scrutiny to ascertain trueness of an orbiting archery arrow.
REFERENCES:
patent: 2470404 (1949-05-01), Kloos
patent: 2876822 (1959-03-01), Groves
patent: 3163305 (1964-12-01), Stanton
Haroian Harry N.
Meroni Charles F.
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