Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Reexamination Certificate
2005-05-31
2005-05-31
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
C033S413000, C033S332000
Reexamination Certificate
active
06898861
ABSTRACT:
A pointed tool and sheath combination allow for use of the tool as a string line anchor and/or as a plumb bob and provide safe storage of the tool when not in use. The preferred tool is comprised of a dart-like body having a longitudinal axial bore, and a sharpened spike clamped within the longitudinal bore. Sheaths are provided that with snap-in installation of the tool down past curved, inwardly-protruding walls of the sheath, or of the tool into engagement with a latching arm that cooperates with a recess or other latching surface on the tool.
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Sketch of Asian tool believed by Applicant to have a long history of use in Asia.
Fulton Christopher W.
Jagan Mirellys
Pedersen Barbara S.
Pedersen Ken J.
Pedersen & Co. PLLC
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