Coupling for plastic pipe

• US 4,109,941 A
• Filed: 06/08/1976
• Issued: 08/29/1978
• Est. Priority Date: 06/08/1976
• Status: Expired due to Term

• Current Assignee: Phillips Petroleum Company (ConocoPhillips)
• Original Assignee: Phillips Petroleum Company (ConocoPhillips)
• Inventors: Wynne, Ralph A., Wood, Roy F.
• Primary Examiner(s): Schroeder, Werner H.
• Assistant Examiner(s): Berman, Conrad L.
• Application Number:
  US05/693,981
• Time in Patent Office: 812 Days
• Field of Search: 285/236, 285/111, 285/423, 285/369, 285/373, 285/114, 285/419, 403/300, 403/303, 403/312, 29/451
• US Class Current: 285/111
• CPC Class Codes: F16L 33/23 the outer parts being segmented, the segments being pressed against the hose by tangentially arranged members
• CPC Class Codes: F16L 47/08 with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
• CPC Class Codes: Y10T 403/5781 Bolted

Abstract

A means and apparatus for connecting resilient conduit is provided in which a first section of resilient tubing of internal dimensions sufficient to slide over the conduits and having two grooves, one spaced from each end of the internal surface of the section with each groove containing resilient gasket material substantially filling the groove to form a gasket around the conduit is slid into place so that the conduits to be connected are juxtaposed within the first section of tubing between the gasketed grooves. An encasing tubing is placed around said first section of tubing at least overlying the resilient gasket material. A pair of split metal clamping rings with one ring adjacent each end of the first tubular section and joined by a plurality of spacer bars united at each end to the clamping rings is fitted over the encasing tubing in relation to apply pressure on the encasing tubing when the split rings are united in clamped position. Each ring has grooves between flattened areas of the inner surface which upon uniting of the rings in clamped position cause deformation of the conduit surface into the grooves thereby aiding in holding the clamped conduits in position.

Claims

1. An apparatus for connecting conduits of equal external dimensions aligned end-to-end comprising:

(a) a first section of tubing of internal dimensions to slide over juxtaposed conduits of equal external dimensions at the juxtaposition of the conduits, said first section of tubing having two grooves, one spaced from each end of the internal surface of the section;

(b) resilient gasket material for encircling said conduits and substantially filling said two grooves;

(c) encasing tubing overlying said first section of tubing at least surrounding each of said grooves; and

(d) a pair of split metal clamping rings, each ring comprising as a clamping surface on its inner surface a plurality of interspaced grooves adapted to receive the deformed surface of a conduit compressed by the clamping ring positioned with one ring adjacent each end of said first tubular section with spacer bars joining said clamping rings, said spacer bars fitting over the encasing tubing in relation to apply pressure on the encasing tubing with the split rings in clamped position.

2. An apparatus of claim 1 comprising split clamping rings wherein said grooves are parallel to each other and transverse the length of the ring.

3. An apparatus of claim 1 comprising split clamping rings wherein said grooves are cut as a spiral thread.

4. An apparatus of claim 1 comprising split rings adapted to be united by complementary fasteners.

5. An apparatus for connecting conduits of claim 1 in which said encasing tubing comprises a pair of tubing bands.

6. A pair of conduits of equal external dimensions aligned end-to-end and joined by an apparatus of claim 1.