Liquid level vial and method for making the vial

Details Liquid level vial and method for making the vial Liquid level vial and method for making the vial

1995-08-09

1997-07-29

Fulton, Christopher W.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33365, G01C 934, G01C 902

Patent

active

056511868

ABSTRACT:
A vial for a builder's level includes a body with an interior wall and a body cavity containing a bubble. A marker ring is exposed in the cavity. In the improvement, the ring is embedded in the body and the interior wall and the ring have surfaces machined and coextensive with one another. The bubble moves smoothly across the machined wall and ring surfaces. A new method for making a level vial includes providing an intermediate vial product with a body wall having at least one marker ring embedded in it and machining the wall and the ring to form a wall surface free of discontinuities. The intermediate vial product is also disclosed.

REFERENCES:
patent: 2752693 (1956-07-01), Wullschleger
patent: 3028290 (1962-04-01), Roberts et al.
patent: 3593428 (1971-07-01), Jacoff
patent: 3842514 (1974-10-01), Scheyer
patent: 3871109 (1975-03-01), Vaida
patent: 4347088 (1982-08-01), Jacquet
patent: 4456576 (1984-06-01), Cotte
patent: 4521974 (1985-06-01), Neis et al.
patent: 4988472 (1991-01-01), Orimoto et al.

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