Bolt hole marker

Details Bolt hole marker Bolt hole marker

2005-06-21

2005-06-21

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Gauge

With point marker

C033S613000, C033S669000, C033S574000

Reexamination Certificate

active

06907675

ABSTRACT:
A marker for marking the location for drilling holes to pass the line of bolts in a plate to be secured to the slab of a building. The marker includes a rotatable gauge having a plurality of different sizes of notches each to nest a different diameter of bolt to locate the center of the bolt a predetermined distance from approximately the center of the plate. The user positions the marker against the bolt and atop the plate and imparts a force to cause a tip to impart a mark on the plate for the location for a hole to pass the bolt. The gauge may also be used to obtain the size of the bolt and hence the hole required to closely pass the bolt.

REFERENCES:
patent: 1306467 (1919-06-01), Coughtry
patent: 3808690 (1974-05-01), Balder
patent: 4363173 (1982-12-01), Caldera
patent: 4519143 (1985-05-01), Correlli
patent: 5068976 (1991-12-01), Bell
patent: 5375339 (1994-12-01), Noel, Jr.
patent: 6508011 (2003-01-01), Lee

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