Pipe coupling hinge

Details Pipe coupling hinge Pipe coupling hinge

1990-07-19

1991-05-28

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Guide and support

285112, 285367, 285420, 24284, F16L 3500

Patent

active

050187686

ABSTRACT:
A pipe coupling for encircling and coupling aligned pipe ends is formed of aligned arcuate segments that are fastened together. The segments are hingedly connected together at adjacent ends by means of a hook formed on the end of one segment and a hook receiving loop formed on the corresponding end of the other segment. The loop forms an elongated rectangular opening defined by a pair of radially outwardly extending legs, that are joined to the segment and an axle connecting the legs. The hook has a similar cross section, but is loosely fitted within the opening. A depression is formed in the axle, at one leg, and a correspondingly aligned depression is formed in the segment wall adjacent the opposite leg. The hook has a projection which normally prevents the hook from withdrawal from the loop opening when the hook is pivoted relative to the opening. But, the hook is sufficiently loose in the opening so that the segments may be angled relative to each other to move the opposite corners of the hook into the depressions and, thereby, clear the projection relative to the opening for permitting withdrawal of the hook from the loop. A removable ring arranged around the axle, between its adjacent leg and the hook, normally prevents such relative movement, but is removable to permit such relative movement. The opposite ends of the segments are fastened together by a bolt. Thus, the segments may be stored separately and assembled together when desired, by interconnecting the hook and loop, or may be pre-assembled.

REFERENCES:
patent: 411967 (1889-10-01), Rieseck
patent: 1928316 (1933-09-01), Muto
patent: 3964773 (1976-06-01), Stade et al.
patent: 4373235 (1983-02-01), Korgaonkar
patent: 4915418 (1990-04-01), Palatchy

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