Pipe joints or couplings – Essential catch – Resilient ring
Patent
1995-09-25
1997-05-27
Nicholson, Eric K.
Pipe joints or couplings
Essential catch
Resilient ring
285903, 285308, F16L 37088
Patent
active
056325126
ABSTRACT:
Fastening coupling for a ringed tube, comprising at least one sleeve (18), the inside diameter of which is at least equal to the largest outside diameter of the ringed tube, inside which one end of the ringed tube becomes housed, as well as a fastening ring (10), in which the sleeve (18) includes at least two circumferentially aligned orifices (28), each comprising a wide part (30) and a narrow part (32), these parts being adjacent and intercommunicating; the ring (10) is circumferentially discontinuous and radially deformable and is provided with at least two tenons (12) projecting inwards, each one comprising a narrow base (13); the ring (10) can be applied around the sleeve (18) so that each tenon (12) passes through the wide part (30) of an orifice (28) and engages in the ringed structure of the tube (48) so as to retain it axially inside the sleeve (18); it being possible, by rotating the ring (10), to fit the narrow base (13) of each tenon into the narrow part (30) of an orifice (28) so as to prevent any radial movement of the ring (10).
REFERENCES:
patent: 2260712 (1941-10-01), Harrison
patent: 3352576 (1967-11-01), Thorne-Thomsen
patent: 3428340 (1969-02-01), Pelton
patent: 3439943 (1969-04-01), Thorne-Thomsen
patent: 4513998 (1985-04-01), Grossauer
patent: 4541657 (1985-09-01), Smyth
patent: 4591192 (1986-05-01), Van Exel et al.
patent: 4919462 (1990-04-01), Matsui et al.
patent: 4989905 (1991-02-01), Rajecki
Nicholson Eric K.
Polva Pipelife B.V.
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