Light-ray indicator

Details Light-ray indicator Light-ray indicator

1977-09-21

1980-01-15

Corbin, John K.

Optics: measuring and testing

Fiducial instruments

Artificial reference

356149, G01C 502

Patent

active

041836677

ABSTRACT:
A light-ray indicator having a support on which is mounted by a universal joint a housing containing a radiation source and provided with a weight at the lower end so as to seek a plumb line. The universal joint forms a portion of an electrical circuit which connects the radiation source contained in the housing a power supply mounted on the support mounted externally of the housing and universal joint, with an adaptor unit including an adjustable mirror being mounted on an upper end of the housing so as to permit the mirror to deflect a radiation beam received from the radiation source through an angle variable with respect, but intersecting, an axis along which the beam is originally emitted from the radiation source.

REFERENCES:
patent: 2423270 (1947-07-01), Summers, Jr.
patent: 2595951 (1952-05-01), Konet et al.
patent: 3471234 (1969-10-01), Studebaker
patent: 3729266 (1973-04-01), Mason et al.
patent: 3858984 (1975-01-01), Denton et al.

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