Pipe joints or couplings – Sleeve – Dependent
Patent
1981-09-23
1983-10-11
Arola, Dave W.
Pipe joints or couplings
Sleeve
Dependent
285112, 285367, F16L 2106
Patent
active
044087888
ABSTRACT:
A split collar for use with pipe and the like including a pair of discrete semicircular collar halves each having outwardly extending flanges at their terminal ends, and which halves cooperate to define an essentially circular opening. The inner surfaces of adjacent flanges abut along their inboard portions and then generally diverge. Aligned holes of elongated configuration are provided in the flanges to permit securing of the halves together in assembled relation with bolt and nut combinations or the like. The point where the inner surfaces of adjacent flanges commence to diverge is inboard of the inner edges of the bolt head and nut; and, as a result, the halves may be swung to a substantially open position after removal of one of the bolts only and without any loosening of the other bolt.
REFERENCES:
patent: 2459251 (1949-01-01), Stillwagon
patent: 3024046 (1962-03-01), Frost et al.
patent: 3695638 (1972-10-01), Blakeley
Arola Dave W.
Grinnell Fire Protection Systems Company, Inc.
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