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CA-3048716-C - PIPE-FITTING

CA3048716CCA 3048716 CCA3048716 CCA 3048716CCA-3048716-C

Abstract

A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.

Inventors

  • James Charles JONES

Assignees

  • GEORG FISCHER CENTRAL PLASTICS LLC

Dates

Publication Date
20260505
Application Date
20190704
Priority Date
20180802

Claims (17)

  1. CLAIMS 1. A pipe-fitting, comprising: a coupling including a bell defining a pipe insertion mouth at an end of the coupling and an inner recess; and a flexible pipe-restraint gasket assembly disposed within the inner recess, the gasket including an annular body, a plurality of discrete gripping members and at least one extension portion, the plurality of gripping members being disposed around an outer periphery of the body, the at least one extension portion extending from the body and being disposed between a pair of the plurality of gripping members, the at least one extension portion defining a pocket, and wherein circumferentially opposing sides of each gripping member are curved in a longitudinal direction, with opposite axially extending edges of the extension portion engaging the opposing sides of the plurality of curved gripping members, with the extension portion being configured to collapse when fluid pressure is applied through the pipe.
  2. 2. The pipe-fitting of claim 1, wherein the pocket includes opposing walls being nonparallel and diverging relative to each other.
  3. 3. The pipe-fitting of claim 2, wherein the pocket includes a width configured to collapse thereby reducing the width of the pocket.
  4. 4. The pipe-fitting of any one of claims 1 to 3, wherein each gripping member includes a bottom surface and a top curved surface. 23 Date Re9ue/Date Received 2024-02-12
  5. 5. The pipe-fitting of claim 4, wherein teeth extend from the bottom surface of each gripping member.
  6. 6. The pipe-fitting of claim 5, wherein each gripping member includes a first angled surface and a second angled surface that cooperate to form a recess between two of the teeth.
  7. 7. The pipe-fitting of any one of claims 1 to 6, wherein the body and the at least one extension portion are made of an elastomeric material, and wherein the plurality of gripping members are made of a metallic material.
  8. 8. The pipe-fitting of any one of claims 1 to 7, wherein the gripping members contact one another 360 degrees around a pipe once the plurality of curved gripping members grip the pipe, the pocket comprising opposing walls which are non-parallel and diverge in an axial direction.
  9. 9. The pipe-fitting of any one of claims 1 to 8, wherein the bell includes a ridge and a sloping portion extending from the ridge, and wherein the ridge and the sloping portion cooperate to define the inner recess.
  10. 10. The pipe-fitting of claim 9, wherein a bulbous portion is disposed at an end of the ridge, and wherein the bulbous portion protrudes inwardly past an inner surface of the ridge.
  11. 11. The pipe-fitting of claim 10, wherein the bulbous portion protrudes outwardly past at least a portion of an outer surface of the ridge. 24 Date Re9ue/Date Received 2024-02-12
  12. 12. The pipe-fitting of claim 11, wherein the inner surface of the ridge and a line tangent to the bulbous portion in a direction parallel to a center axis of the coupling forms an angle.
  13. 13. The pipe-fitting of claim 12, wherein the angle is between 15 degrees and 20 degrees.
  14. 14. The pipe-fitting of claim 13, wherein a thickness of the bulbous portion is greater than a thickness of the ridge.
  15. 15. The pipe-fitting of claim 4, wherein the bell includes a ridge and a sloping portion extending from the ridge, and wherein the ridge and the sloping portion cooperate to define the inner recess.
  16. 16. The pipe-fitting of claim 15, wherein a bulbous portion is disposed at an end of the ridge, and wherein the bulbous portion protrudes inwardly past an inner surface of the ridge.
  17. 17. The pipe-fitting of claim 16, wherein the inner surface of the ridge and a line tangent to the bulbous portion in a direction parallel to a center axis of the coupling forms an angle. Date Re9ue/Date Received 2024-02-12

Description

PIPE-FITTING FIELD [0001] The present disclosure relates to a pipe-fitting. BACKGROUND [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] Traditionally, pipe-fittings have been used to join two or more metallic pipes (e.g., ductile iron pipes) to each other, such as in city water lines. Such pipefittings are cumbersome to install and are inadequate for fluid flow having high pressures. Furthermore, such pipe-fittings are not easily adaptable to pipes made of different materials (i.e., pipes made of polyvinylchloride (PVC) or polyethylene (PE), for example, instead of ductile iron). The present disclosure provides a pipefitting that is adequate for fluid flow at high pressures and is convenient to install. Furthermore, the pipe-fitting of the present disclosure is adaptable to pipes of different materials, such as pipes made of polyvinylchloride (PVC) or polyethylene (PE), for example. SUMMARY [0004] This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features. [0005] In one form, the present disclosure provides a pipe-fitting. The pipefitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an 1 Attorney Docket No. 16355CP-000107-US inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket. [0006] In some configurations of the pipe-fitting of the above paragraph, the pocket includes opposing walls being non-parallel and diverging relative to each other. [0007] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the pocket includes a width. The at least one extension portion is configured to collapse thereby reducing the width of the pocket. [0008] In some configurations of the pipe-fitting of any one or more of the above paragraphs, opposing sides of each gripping member are curved. [0009] In some configurations of the pipe-fitting of any one or more of the above paragraphs, each gripping member includes a bottom surface and a top curved surface. [001 0] In some configurations of the pipe-fitting of any one or more of the above paragraphs, teeth extend from the bottom surface of each gripping member. [0011] In some configurations of the pipe-fitting of any one or more of the above paragraphs, each gripping member includes a first angled surface and a second angled surface that cooperate to form a recess between two of the teeth. 2 Attorney Docket No. 16355CP-000107-US [0012] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the body and the at least one extension portion are made of an elastomeric material. The plurality of gripping members are made of a metallic material. [0013] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the bell includes a ridge and a sloping portion extending from the ridge. The ridge and the sloping portion cooperate to define the inner recess. [0014] In some configurations of the pipe-fitting of any one or more of the above paragraphs, a bulbous portion is disposed at an end of the ridge. [0015] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the bulbous portion protrudes inwardly past an inner surface of the ridge. [0016] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the bulbous portion protrudes outwardly past at least a portion of an outer surface of the ridge. [0017] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the inner surface of the ridge and a line tangent to the bulbous portion in a direction parallel to a center axis of the coupling forms an angle. [0018] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the angle is between 15 degrees and 19 degrees. [0019] In some configurations of the pipe-fitting of any one or more of the above paragraphs, a thickness of the bulbous portion is greater than a thickness of the ridge. 3 Attorney Docket No. 16355CP-000107-US [0020] In some configurations of the pipe-fitting of any one or more of the above paragraphs, the bell includes a ridge and a sloping portion extending from the ridge. The ridge and the sloping portion cooperate to define the inner recess. [0021] In some configurations of the pipe-fitting of any one or more of the above paragraphs, a bulbous portion is disposed at an end of the ridge. The bulbous po