Incremental tension fastener assembly

Details Incremental tension fastener assembly Incremental tension fastener assembly

2006-01-03

2006-01-03

Saether, Flemming (Department: 3677)

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

Torque responsive nut or bolt driving connection

C411S008000, C411S188000, C411S147000

Reexamination Certificate

active

06981829

ABSTRACT:
The fastener assembly comprises a torquing member and a clamping pressure member assembled together on a common axis. The torquing member has threads formed around the axis. An annular bearing surface extends around the axis on one end of the member. The clamping pressure member has an annular bearing surface formed around the axis on one end and an annular clamping surface extending around the axis on an opposite end. The annular bearing surface of the torquing member includes a first series of helically inclined surface segments extending about substantially the same axis as the threads and a second series of helically inclined surface segments extending about substantially the same axis as the threads but provided with a pitch substantially equal to or greater than that of the threads, with an opposite incline. The annual bearing surface on the clamping pressure member includes a first series of helically inclined surface segments extending about substantially the same axis as the threads, and a second series of helically inclined surface segments extending about substantially the same axis as the threads with a pitch substantially equal to or greater than that of the threads, with an opposite incline. Helically inclined bearing surfaces on the torquing member and the clamping pressure member engage each other in locking relationship.

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