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US 6,640,453 B2Granted
Clinometer
OwnerGary Wayne Eisenmengerinventor
Life of this patent
Estimating the term…
Abstract
The current invention discloses an improved clinometer which can be used as an inexpensive form of builder's level or transit due to its capability of orienting itself to a predetermined vertical angle, and maintaining said angle through the use of gravity.
Claims4
A device for sighting predetermined angles in a vertical plane comprising:
- a. a relatively flat plate having a point of equilibrium;
- b. a rod supporting said plate at the point of equilibrium, said plate rotating freely about an axis through said rod and said point of equilibrium;
- c. a plumb line having an origin attached to said rod;
- d. a sight means establishing a sight line along said flat plate;
- and
- e. means for releasable attachment of said plumb-line to said plate in a multiplicity of predetermined positions on the periphery of said plate, each of said predetermined positions being at a predetermined angle with respect to said sight line;
- f. wherein when said plumb-line is attached to one of said predetermined positions and said plumb-line is plumb, said sight line takes said predetermined angle.
4 more elements
Dependencies are inferred from the claim text.