Pipe joints or couplings – Essential catch – Leaf spring
Patent
1990-02-02
1992-02-11
Reese, Randolph A.
Pipe joints or couplings
Essential catch
Leaf spring
285321, 285423, 285903, 285906, 285921, F16L 3902
Patent
active
050870840
ABSTRACT:
A fitting for externally grooved and ribbed end portions of pipes, tubes, hoses and like tubular bodies has a tubular section and one or more circumferentially extending prongs each having one end integral with but pivotable relative to the section and a free second end. The inner side of each prong has one or more one-piece or composite circumferentially extending protuberances. In order to couple the fitting to the end portion of a tubular body, the free end of each prong is pulled radially outwardly to extract the protuberance or protuberances from the interior of the tubular section. The end portion of a tubular body is thereupon inserted into the section, and the prong or prongs are released to introduce their protuberances into the adjacent external groove or grooves of the inserted end portion. Each prong is surrounded by a substantially U-shaped slot of the tubular section to permit slight axial movements of the free end portion of the respective prong.
REFERENCES:
patent: 4368904 (1983-01-01), Lanz
patent: 4441745 (1984-04-01), Nicholas
patent: 4542922 (1985-09-01), Grossauer
patent: 4575133 (1986-03-01), Nattel
Anton Hummel GmbH Metallwarenfabrik
Chun Heather
Kontler Peter K.
Reese Randolph A.
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