Geometrical instruments – Straight-line light ray type – Level
Patent
1993-08-18
1994-11-29
Cuchlinski, Jr., William A.
Geometrical instruments
Straight-line light ray type
Level
33227, 33DIG21, G01C 500
Patent
active
053677790
ABSTRACT:
A laser marker which includes a casing having a battery chamber covered by a lid, a level bearing plate fastened to the casing at the bottom, a level mounted on the level bearing plate above the casing, adjustment rack pivotably fastened to the casing by two spring-supported locating plates and two axle caps to hold a light concentrator, a rotary socket covered by a lens cover to hold a lens in line with the light concentrator, whereby the adjustment rack is turned on the casing and retained in the desired angle by the locating plates, and the rotary socket is turned on the adjustment rack to let the light of the light concentrator be emitted through the lens and formed into a light spot or a line of light projected on an object.
REFERENCES:
patent: 1454693 (1923-05-01), Schlattan
patent: 3897637 (1975-08-01), Genho
patent: 3909952 (1975-10-01), Lagasse
patent: 4752126 (1988-06-01), Fujii
patent: 5075977 (1991-12-01), Rando
Cheng Long Plastic Co., Ltd.
Cuchlinski Jr. William A.
Wirthlin Alvin
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