Pipe joints or couplings – With means blocking release of holding means – Lock nut or washer
Patent
1980-04-28
1982-08-31
Callaghan, Thomas F.
Pipe joints or couplings
With means blocking release of holding means
Lock nut or washer
29157R, 175297, 285334, 411411, F16L 1500
Patent
active
043469205
ABSTRACT:
A threaded connection is subject in use after assembly to a load of specified magnitude in a selected direction along the thread axis. As so loaded, the basically constant pitch threads are uniformly stressed. The load faces of the threads on at least one of the members are defined, in the unstressed condition, to have a lead which varies from a constant lead by an amount which, at any given location along the threads, is equal to the amount of net relative deflection of the threaded members along the axis at such location in response to the application to the members of the load of specified magnitude.
The design considerations pertinent to such a connection are set forth in the context of the presently preferred embodiment of the connection.
REFERENCES:
patent: 1254927 (1918-01-01), Neckerman
patent: 1909489 (1933-05-01), Eaton
patent: 2056112 (1936-09-01), Protin
patent: 2909380 (1959-10-01), Hoye et al.
patent: 3050318 (1962-08-01), van der Wissel
patent: 3079181 (1963-02-01), van der Wissel
patent: 3210096 (1965-10-01), van der Wissel
patent: 4023630 (1977-05-01), Perkin et al.
patent: 4067404 (1978-01-01), Crase
Callaghan Thomas F.
Smith International Inc.
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