Plumb bob with adjustable weights

Details Plumb bob with adjustable weights Plumb bob with adjustable weights

2007-10-09

2007-10-09

Bennett, G. Bradley (Department: 2859)

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

C033S398000

Reexamination Certificate

active

11398394

ABSTRACT:
A plumb bob with adjustable weights for suiting different applications is disclosed that includes, in one embodiment, a bottom point; a shank extended upward from the point and having a lower portion and an upper threaded section; hollow first weight elements adapted to put on the lower portion of the shank and rested upon the point; hollow second weight elements having an axial threaded hole and being adapted to put on a portion of the threaded section of the shank to threadedly secure thereto with the first weight elements being fastened thereunder; a hollow projecting knob including an axial bore having lower threads and a top shoulder; and a string including a bottom knot engaged with and stopped at the shoulder. The knob is adapted to threadedly secure to the remaining portion of the threaded section of the shank.

REFERENCES:
patent: 485376 (1892-11-01), Fuller
patent: 1025828 (1912-05-01), Paul
patent: 2492884 (1949-12-01), Patermaster
patent: 3405450 (1968-10-01), Peacock
patent: 3448525 (1969-06-01), Majewski
patent: 3720001 (1973-03-01), Majewski
patent: 2006/0242852 (2006-11-01), Lin

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