Magnetic plumb bob holder

Details Magnetic plumb bob holder Magnetic plumb bob holder

2005-12-20

2005-12-20

Fulton, Christopher (Department: 2859)

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

C033S365000, C033S404000, C033S370000

Reexamination Certificate

active

06976316

ABSTRACT:
An inspection tool for measuring the true of metal door frames uses a plumb bob. The plumb bob is suspended from a holder which may be attached to a door frame by magnets in the body of the holder. The relationship of the holder dimensions models the relationship of the dimensions of a metal door frame. The point indicated by the plumb bob will have the same dimensions from the door frame if the frame is true. If the frame is not true, the point will have different measurements.

REFERENCES:
patent: 4442610 (1984-04-01), Owens, Jr.
patent: 5163230 (1992-11-01), Gast
patent: 5195248 (1993-03-01), Juhasz
patent: 5323539 (1994-06-01), O'Neil
patent: 5392522 (1995-02-01), O'Neil
patent: 5426860 (1995-06-01), Lee et al.
patent: 5933974 (1999-08-01), Walters et al.
patent: 2234067 (1989-07-01), None
Tajima®, Model PZB400, Pulmb-Rite, Plumb-Bob-Setter packaging, no date.

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