T-bevel plumb tool

Details T-bevel plumb tool T-bevel plumb tool

2007-07-17

2007-07-17

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

C033S451000, C033S471000

Reexamination Certificate

active

11335146

ABSTRACT:
A t-bevel plumb tool configured for identifying and placing a plumb line has the components typical of a t-bevel, namely a handle and a blade that pivotally attaches to the handle, and a plumb indicator that, in one embodiment, removably attaches to one end of the blade. In this embodiment, a locking mechanism secures the blade to the first end of the handle and a plumb locking member attaches the plumb indicator to the second end of the blade during use as a plumb tool. When the plumb indicator is not being used for finding a plumb line, it attaches to an extension member at the second end of the handle. In another embodiment, the plumb indicator is incorporated into the locking mechanism that secures the blade relative to the handle and a separate level indicator is also incorporated into the handle.

REFERENCES:
patent: 252065 (1882-01-01), Thomas
patent: 649422 (1900-05-01), Fry et al.
patent: 704369 (1902-07-01), Pritt
patent: 1489572 (1924-04-01), Bennewitz
patent: 1994023 (1935-03-01), Koelman
patent: 2656609 (1953-10-01), Siggson
patent: 3225451 (1965-12-01), Olexson et al.
patent: D220061 (1971-03-01), Kerns
patent: 4955141 (1990-09-01), Welch
patent: 5839201 (1998-11-01), Young
patent: 6568095 (2003-05-01), Snyder

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