Geometrical instruments – Straight-line light ray type – Horizontal angle measurer
Reexamination Certificate
2005-07-05
2005-07-05
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Straight-line light ray type
Horizontal angle measurer
C033S286000, C033S227000, C033S451000
Reexamination Certificate
active
06912792
ABSTRACT:
An apparatus for determining a level surface includes a housing having a plurality of apertures and a power supply source disposed therein. A plurality of laser beam supply sources are operably controlled by the plurality of switches. A plurality of reflecting members spaced from the plurality of laser beam supply sources and receive a plurality of laser beams having respective first paths and reflect same away in corresponding second paths. A plurality of angle-adjusting members receive the plurality of laser beams and direct same along a third path and out of the housing via the plurality of apertures, respectively. A plurality of control dials are operably connected to the plurality of angle-adjusting members for positioning same to thereby establish the respective third angles of the plurality of laser beams. A plurality of leveling devices are attached to the housing and help position the apparatus at a substantially level position.
REFERENCES:
patent: 2877555 (1959-03-01), Visockis, Jr.
patent: 3815250 (1974-06-01), Roodvoets et al.
patent: 3824666 (1974-07-01), Roodvoets et al.
patent: 3897637 (1975-08-01), Genho
patent: 4031629 (1977-06-01), Paluck
patent: 4417816 (1983-11-01), Kindl et al.
patent: 5394616 (1995-03-01), Claxton
patent: 5531031 (1996-07-01), Green
patent: 5568265 (1996-10-01), Mathews
patent: 5782003 (1998-07-01), Bozzo
patent: D409508 (1999-05-01), Gallagher
patent: 6009630 (2000-01-01), Rando
patent: 6202312 (2001-03-01), Rando
patent: 6427348 (2002-08-01), Webb
Courson Tania
Fulton Christopher W.
LandOfFree
Apparatus for determining a level surface does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for determining a level surface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining a level surface will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3408144