Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc.
Patent
1991-12-18
1993-03-23
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
411176, F16B 3700
Patent
active
051958546
ABSTRACT:
A tee nut is integrally made of a metallic material to have a shaft portion and a flange portion, the latter having two pairs of pawls projecting in the direction in which the shaft portion extends. The pawls are disposed radially of the flange portion. The peripheral edge of the flange portion is formed with projections at position diametrically opposed to each other and at right angles with the radial direction in which the two pairs of pawls are opposed to each other. The projections extend in the same direction as that in which the pawls extend namely toward the free end of the shaft-portion. The clearances in guide rails of C-shaped cross-section constituting a feed track, are substantially decreased in size by the presence of the pointer projections producing a decreased frictional resistance between the track and nuts travelling on the track overlapping of the flange portions due to the rise of the flange portions in the guide rails is prevented, thus ensuring a smooth movement of the tee nut along the feed track.
REFERENCES:
patent: 3270610 (1966-09-01), Knowlton
patent: 3480061 (1969-11-01), Leistner
patent: 4508478 (1985-04-01), Leistner
Fasse W. G.
Lindsey Rodney M.
Nagayama Electronic Industry Co. Ltd.
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