Two wire circuit for a laser pendulum

Details Two wire circuit for a laser pendulum Two wire circuit for a laser pendulum

2006-07-18

2006-07-18

Smith, R. Alexander (Department: 2859)

Geometrical instruments

Straight-line light ray type

Alignment device

C033S291000, C033SDIG021

Reexamination Certificate

active

07076880

ABSTRACT:
A two wire laser control circuit for a laser leveler includes a switch mounted on a housing and having an electrical current passing therethrough. The switch has a first position and a second position. A diode bridge is mounted on a pendulum. A plurality of laser diodes are mounted on the pendulum and are electrically coupled to the diode bridge. A first wire extends from the switch to the diode bridge. A second wire extends from the switch to the diode bridge. Current from the switch passes through the first wire to the diode bridge and to one of the plurality of laser diodes when the switch is in the first position. Current from the switch passes through the second wire through the diode bridge and to all of the plurality of laser diodes when the switch is in the second position.

REFERENCES:
patent: 4183667 (1980-01-01), Denton
patent: 4448528 (1984-05-01), McManus
patent: 4993161 (1991-02-01), Borkovitz
patent: 5552886 (1996-09-01), Kitajima et al.
patent: 6195901 (2001-03-01), Falb
patent: 6493952 (2002-12-01), Kousek et al.
patent: 6604291 (2003-08-01), Waibel et al.
patent: 1564525 (2005-08-01), None

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