Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Reexamination Certificate
2005-09-27
2005-09-27
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
Reexamination Certificate
active
06948253
ABSTRACT:
The improved plumb-bob is mainly consisted of a body section, a point section, and a fixing element, wherein a connecting means is arranged at the top of the body section by which it may be connected to a suspending cord, and the point section is a cylinder with a flange arranged at the shank, and the point section is provided at least at one end with a conical-pointed part, and the fixing element is bored from the low end to the upper end forming an upper portion and a lower portion. The upper portion is of larger diameter and the lower portion is of reduced diameter but is larger than that of the point section, thus forming an angular shoulder against which the fringe abuts when the parts are assembled to enable the conical-pointed part to project outwardly under the fixing element. The fixing element can hold and fix the point section in a proper position between the body and the fixing element. The invention may simplify the structure of the expandable point section such that not only the manufacturing cost of the point section is reduced, but also many unnecessary compatible constraints may be removed, that is, when the point section is damaged and no spared point section for replacement, a metal nail, such as iron nail, steel nail, etc., with similar diameter can be applied as a substitute.
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Webpage: http://www.brightlingsbeads.com/sprinfinclas.html , copyright Jan. 1, 2005.
Bennett G. Bradley
Clear Dawn Co., LTD
Troxell Law Office PLLC
LandOfFree
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