US 6,981,829 B2
Incremental tension fastener assembly
Larry J. Wilson, Commerce Township, Mich. (US)
Assigned to MacLean-Fogg Company, Mundelein, Ill. (US)
Appl. No. 10/486,118
PCT Filed Sep. 06, 2002, PCT No. PCT/US02/28382
§ 371(c)(1), (2), (4) Date Feb. 06, 2004,
PCT Pub. No. WO03/023235, PCT Pub. Date Mar. 20, 2003.
Claims priority of provisional application 60/318097, filed on Sep. 06, 2001.
Prior Publication US 2004/0170485 A1, Sep. 02, 2004
Int. Cl. F16B 31/02 (2006.01)
U.S. Cl. 411—1 14 Claims
OG exemplary drawing
 
1. A fastener assembly comprising:
a) a torquing member and a clamping member assembled on a common axis;
b) the torquing member is provided with threads formed around the axis and an annular bearing surface extending around the axis on one end;
c) the clamping member is provided with an annular bearing surface formed around the axis on one end and facing the torquing member bearing surface;
d) the annular bearing surface on the torquing member includes a plurality of helically inclined surface segments, wherein the surface segments include a first pitch that is substantially equal to a pitch on the threads and the surface segments include a second pitch, with opposite incline relative to the threads; and
e) the annular bearing surface on the clamping member includes a plurality of helically inclined surface segments, wherein the surface segments include a first pitch that is substantially equal to the pitch on the threads and the surface segments include a second pitch with opposite incline relative to the threads.