Automatic level and plumb tool

Details Automatic level and plumb tool Automatic level and plumb tool

1995-02-24

1996-06-11

Will, Thomas B.

Geometrical instruments

Straight-line light ray type

Level

33DIG21, 356149, 356250, G01C 502, G12B 500

Patent

active

055243525

ABSTRACT:
A self-leveling plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. Accurate, low cost structures for generating level and plumb beams and planes of light are disclosed. In principal embodiments, all leveling is accomplished using a very flexible coil spring as a pendulum element, a chain link connection in combination with such a spring, or a point contact suspension. Several accessories are disclosed for use with the laser tool, as well as other embodiments.

REFERENCES:
patent: 2460836 (1949-02-01), Lovins
patent: 2633050 (1953-03-01), Baker
patent: 2679181 (1954-05-01), Keuffel et al.
patent: 3684381 (1972-08-01), Zoot
patent: 3748041 (1973-07-01), Bird
patent: 3771876 (1973-11-01), Ljungdahl et al.
patent: 3807869 (1974-04-01), Hartley
patent: 3897637 (1975-08-01), Genho
patent: 3936197 (1976-02-01), Aldrink et al.
patent: 4043679 (1977-08-01), George et al.
patent: 4111564 (1978-09-01), Trice, Jr.
patent: 4119382 (1978-10-01), George et al.
patent: 4183667 (1980-01-01), Denton
patent: 4221483 (1980-09-01), Rando
patent: 4333242 (1982-06-01), Genho, Sr.
patent: 4448528 (1984-05-01), McManus
patent: 4679937 (1987-07-01), Cain et al.
patent: 4767208 (1988-08-01), Cain et al.
patent: 4852265 (1989-08-01), Rando et al.
patent: 4912851 (1990-04-01), Rando et al.
patent: 5012585 (1991-05-01), Dimagggio
patent: 5075977 (1991-12-01), Rando
patent: 5108177 (1992-04-01), Middleton
patent: 5144487 (1992-09-01), Hersey
patent: 5159760 (1992-11-01), Speigel et al.
patent: 5182863 (1993-02-01), Rando
patent: 5184406 (1993-02-01), Swierski
patent: 5272814 (1993-12-01), Key

Affiliated with

Also associated with

Rating

Automatic level and plumb tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic level and plumb tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic level and plumb tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-345659