Pipe joints or couplings – Convertible
Patent
1988-09-26
1989-09-19
Callaghan, Thomas F.
Pipe joints or couplings
Convertible
285112, 285373, F16L 2106
Patent
active
048674826
ABSTRACT:
A pipe coupling is formed of a pair of similar semicircular segments of a preselected diameter which are fastened together by separate, standard-size, length-adjustable fasteners to form a predetermined diameter circular casing for surrounding and connecting adjacent, axially aligned pipe ends. Each segment has radially arranged, opposite end faces which abut the corresponding end faces of the other segment to form a pair of diametrically aligned junctures. Depressed sockets are formed in the exterior, peripheral surface of each segment near the junctures. Each fastener is formed of an internally threaded tube having an end portion telescopically fitted within a tubular barrel, with a screw having a head engaged against the free end of the barrel and a shank extending through the barrel and threadedly engaged within the tube. The laterally extending teeth which are formed on the tube and barrel fit into the sockets on opposite sides of each juncture. Tightening the screw moves the barrel axially relative to the tube for moving the barrel teeth and tube teeth towards each other and, consequently, compressing adjacent segment faces towards each other. A large number of different diameter pairs of segments can be interchangeably used with a single, standard length fastener.
REFERENCES:
patent: 926532 (1909-06-01), Wilson
patent: 1278598 (1918-09-01), Cooper
patent: 1976797 (1934-10-01), Naylor
patent: 2759744 (1956-08-01), Risley
patent: 3239254 (1966-03-01), Campbell
patent: 3315991 (1967-04-01), Davis
patent: 3355193 (1967-11-01), Craig et al.
Callaghan Thomas F.
Urdan Industries (USA) Inc.
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