Symmetrically stepped bore coupler nut

Details Symmetrically stepped bore coupler nut Symmetrically stepped bore coupler nut

2011-07-26

2011-07-26

Saether, Flemming (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

C411S388000

Reexamination Certificate

active

07985041

ABSTRACT:
A coupler nut with multiple bore diameters that are symmetrically stepped in both directions away from the center bore diameter. The bore diameter at the center is the smallest, and each pair of steps away from the center bore increases the bore diameter. This means that the coupler nut has no single, correct vertical orientation. It has no top or bottom, and as such is vertically ambidextrous.

REFERENCES:
patent: 838448 (1906-12-01), Pitcher
patent: 887864 (1908-05-01), Steese
patent: 991517 (1911-05-01), Kennedy
patent: 994441 (1911-06-01), Burk
patent: 1313450 (1919-08-01), Beals
patent: 1804290 (1931-05-01), Tschappat
patent: 2371121 (1945-03-01), Basquin
patent: 2914332 (1959-11-01), Cervini
patent: 3960047 (1976-06-01), Liffick
patent: 4266813 (1981-05-01), Oliver
patent: 4712812 (1987-12-01), Weir, III
patent: 6367205 (2002-04-01), Cornett, Sr.
patent: 7390024 (2008-06-01), Giordano
Catalog C-2000, 1999, p. 30, Simpson Strong-Tie Company, Inc., Pleasanton, California, USA.

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