Rapid-action connector for flexible tubes or pipes with conical retaining ring

• US 4,895,395 A
• Filed: 11/14/1988
• Issued: 01/23/1990
• Est. Priority Date: 03/22/1988
• Status: Expired due to Fees

• Current Assignee: Finimpresa S.r.l.
• Original Assignee: Finimpresa S.r.l.
• Inventors: Ceriani, Giuliano
• Primary Examiner(s): Callaghan, Thomas F.
• Application Number:
  US07/271,033
• Time in Patent Office: 435 Days
• Field of Search: 285/340, 285/323, 285/39
• US Class Current: 285/39
• CPC Class Codes: F16L 37/0915 with a separate member for releasing the coupling

Abstract

Quick connector for flexible tubes or pipes, which comprises a hollow body, equipped on the inside with a seating for an annular seal, to which body is secured a collar carrying a conical elastic ring having radial slits open towards the inner edge, the ring diverging towards the free end of the body, into which conical ring there may be inserted a flexible tube in sealing contact with the annular seal, which tube can be advanced towards the interior of the hollow body with limited elastic deformation of the conical ring and in conditions of jamming of said conical ring when the tube moves outwards, there being also present a shell projecting outwards from the body and surrounding the flexible tube and having a tapered end towards the inside, the shell being in contact with the internal edge of the slit conical ring and being adapted for preventing, when pushed inwards into the hollow body, the jamming of the conical ring on the surface of the flexible tube, thus making its withdrawal possible.

Claims

1. A rapid-action connector comprising:

an elongated hollow body having a longitudinal axis, an open end adapted to receive a tube connectable to said body, a first shoulder forming a seat spaced axially inwardly from said end, and a second shoulder spaced axially inwardly from said first shoulder;

a generally toroidal seal member lying against said seat and sealingly engaging said tube for forming a seal between said body and said tube while permitting relative axial displacement between said tube and said seal, said tube being engageable with said second shoulder to limit said relative axial displacement;

a slit conical ring diverging toward said open end, received in said body and formed with elastically bendable strips continuously connected together at a wide side of said ring turned toward said end and at which said ring has a continuous rim, said strips having free ends gripping said tube upon insertion of said tube through said ring and said seal member so that said ring is bodily displaced axially upon relative displacement of said tube and said body;

a sliding collar received in said body, said rim being fixed in said collar, said body being formed with a stop limiting axial displacement of said collar relative to said body toward said seal member, said body being further formed with an inwardly turned flange at said open end preventing withdrawal of said collar from said body, said body having a sliding seat between said stop and said flange on which said collar is guided; and

a release sleeve surrounding said tube, disposed within said sliding collar and extending into said body through said open end, said release sleeve having a conical ramp at an end thereof turned toward said ring for deflecting said strips away from said tube for quick release of said tube from said body upon displacement of said sleeve into said body.

2. The rapid-action connector defined in claim 1, further comprising a retaining ring in said body holding said seal member against said first shoulder.

3. The rapid-action connector defined in claim 12, further comprising a spring ring engaged in said body and holding said retaining ring thereon.