Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed bolt or screw with threads and complementary nut
Patent
1990-02-28
1991-08-13
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Headed bolt or screw with threads and complementary nut
411424, 411436, 10 27R, 10 86R, 72469, F16B 3500, F16B 3716, B21D 5320, B21K 144
Patent
active
050392654
ABSTRACT:
An aerospace fastener comprises a blot with a roll-formed thread, and a nut with a similar thread having a uniform pitch P. The bolt has a cylindrical shank, a threaded tip and a run-out zone between the shank and tip. The thread root in the run-out follows a smooth S-shaped curve with the concave portion preferably having a radius in the range of from 2P to 2.7P. The run-out extends from 1.4P to 2.3P from the maximum grip plane of the bolt, and preferably extends from 1.6P to 2P from the maximum grip plane. The root of the thread in the run-out lies within an envelope defined by boundaries which take into account the maximum and minimum material conditions of the bolt. The nut has a run-in truncating the crest of the nut thread complementary to the run-out to clear the root of the bolt thread when the nut is assembled on the bolt in the minimum grip condition. This permits the nut to be assembled on the bolt further than in a conventional combination, and shortening of the nut and bolt by at least 1P to save weight.
REFERENCES:
patent: 929027 (1909-07-01), Schuhmann
patent: 1764053 (1930-06-01), Reed et al.
patent: 1940617 (1933-12-01), Temple
patent: 2215930 (1940-09-01), Mahla
patent: 2314390 (1943-03-01), De Vellier
patent: 2340706 (1944-02-01), Somes
patent: 2740136 (1956-04-01), Chiaberta et al.
patent: 2793884 (1957-05-01), Jungblut
patent: 2895367 (1959-07-01), Nagy
patent: 2985898 (1961-05-01), Guode
patent: 3538739 (1970-11-01), Orlomoski
patent: 3828422 (1974-08-01), Schmitt
patent: 4034586 (1977-07-01), Corrette
patent: 4157725 (1979-06-01), Stanaitis
patent: 4254809 (1981-03-01), Schustor
patent: 4260005 (1981-04-01), Stencel
patent: 4326825 (1982-04-01), Volkmann et al.
patent: 4842466 (1989-06-01), Wheeler et al.
patent: 4915559 (1990-04-01), Wheeler et al.
Rath Jack
Wheeler Roland A.
Lindsey Rodney M.
Redman Jerry
VSI Corporation
LandOfFree
Lightweight fastener does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lightweight fastener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lightweight fastener will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524390