Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Lap bolt or fastener
Patent
1997-04-04
2000-09-05
Dayoan, B.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Lap bolt or fastener
411176, 411180, F16B 2100
Patent
active
061133302
ABSTRACT:
A screw connection especially for heald shaft rods in a loom, includes a countersunk flathead female threaded nut and a countersunk flathead male threaded screw that engages the nut. To secure the nut against rotation when it is inserted into a stamped conical recess, an outer circumferential cylindrical section of the nut is provided with serrations that engage the edge of the stamped conical recess with a location-fit or press-fit, or friction-fit, whereby the screw can be conveniently connected to the nut, for example for clamping a roller bearing ring between two fork ends of a heald shaft connecting rod. The serrations on the outer surface of the female threaded nut have a first transition area (T1) that forms a lead-in first ramp (R1) for guiding the nut into a countersunk recess. The serrations also have a second transition area (T2) that leads onto a second ramp (R2) formed by a conical surface (3') of the female threaded nut for centering the nut in the conical recess and for maintaining the nut centered even if the screw is loosened.
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Dayoan B.
Estremsky Gary
Fasse W. F.
Fasse W. G.
Lindauer Dornier Gesellschaft mbH
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