Pipes having wedging circumferential grooves

• US 20050212296A1
• Filed: 03/28/2005
• Published: 09/29/2005
• Est. Priority Date: 03/26/2004
• Status: Abandoned Application

• Current Assignee: Victaulic Company
• Original Assignee: Victaulic Company of America
• Inventors: Dole, Douglas R.
• Application Number:
  US11/091,147
• Publication Number:
  US 20050212296A1
• Time in Patent Office: Days
• US Class Current: 285/420
• CPC Class Codes: B21D 17/04 by rolling
• CPC Class Codes: F16L 17/025 the sealing rings having radially directed ribs
• CPC Class Codes: F16L 17/04 with longitudinally split or divided sleeve
• CPC Class Codes: F16L 21/065 tightened by tangentially-arranged threaded pins
• CPC Class Codes: F16L 23/08 connection by tangentially arranged pin and nut
• CPC Class Codes: F16L 23/22 made exclusively of a material other than metal
• CPC Class Codes: F16L 25/12 Joints for pipes being spaced apart axially
• CPC Class Codes: F16L 43/00 Bends; Siphons with cleaning apertures F16L45/00
• CPC Class Codes: Y10T 29/49948 Multipart cooperating fastener [e.g., bolt and nut]

Abstract

Pipes and fittings having circumferential grooves proximate to their ends are disclosed. The grooves are formed of first and second side surfaces positioned in spaced apart relation to one another. A floor surface extends between the first and second side surfaces. The first side surface is positioned proximate to the end of the pipe and is oriented perpendicularly to the floor surface. The second side surface is formed of first and second surface portions. The second surface portion is positioned adjacent to the floor surface, and is oriented perpendicularly to it. The first surface portion is oriented at an angle to the floor surface. The second side surface may also have either a convex or a concave shape. Wedging action between the groove and a coupling is facilitated by having the width of each groove being greater at the surface of the pipe than it is at the floor surface.

Claims

1. A pipe having a circumferential groove proximate to one end thereof, said groove comprising:

a first side surface positioned proximate to the end of said pipe;

a second side surface positioned in spaced apart relation to said first side surface and distally to the end of said pipe; and

a floor surface extending between said first and second side surfaces, one of said first and second side surfaces being angularly oriented relatively to said floor surface, said angular orientation being greater than 90°

.

2. A pipe according to claim 1, wherein said second surface has said angular orientation.

3. A pipe according to claim 1, wherein said floor surface is oriented angularly with respect to a surface of said pipe.

4. A pipe according to claim 1, wherein said second side surface is comprised of first and second surface portions, said first surface portion being positioned adjacent to said floor surface and being oriented substantially perpendicularly thereto, said second surface portion being oriented at said angular orientation greater than 90°

.

5. A pipe according to claim 2, wherein said first side surface is oriented substantially perpendicularly to said floor surface.

6. A pipe having a circumferential groove proximate to one end thereof, said groove being formed in a surface of said pipe and defined by side portions positioned in spaced apart relation opposite to one another, and a floor connecting said side portions, said groove having a first width, measured at the surface of said pipe, and a second width, measured at said floor, said first width being greater than said second width.

7. A pipe according to claim 6, wherein one of said side portions has a convex cross-sectional shape.

8. A pipe according to claim 6, wherein one of said side portions has a concave cross-sectional shape.

9. A pipe according to claim 6, wherein said floor is curved.

10. A pipe according to claim 6, wherein one of said side portions comprises a first angularly oriented portion positioned adjacent to said pipe surface and a second angularly oriented portion positioned adjacent to said floor.

11. A pipe according to claim 10, wherein the slope of said first angularly oriented portion is greater than the slope of said second angularly oriented portion.

12. A pipe according to claim 10, wherein the slope of said first angularly oriented portion is less than the slope of said second angularly oriented portion.

13. A pipe according to claim 6, wherein one of said side portions comprises a first angularly oriented portion positioned adjacent to said pipe surface and a second portion positioned adjacent to said floor, said second portion having a concave cross-sectional shape.

14. A pipe having a circumferential groove proximate to one end thereof, said groove being formed in a surface of said pipe and defined by side portions positioned in spaced apart relation opposite to one another, said side portions being angularly oriented relatively to one another to define a substantially wedge-shaped cross-section.

15. A pipe according to claim 14, wherein one of said side portions is oriented substantially perpendicularly to said surface of said pipe.

16. A fitting having a circumferential groove proximate to one end thereof, said groove comprising:

a first side surface positioned proximate to the end of said fitting;

a second side surface positioned in spaced apart relation to said first side surface and distally to the end of said fitting; and

a floor surface extending between said first and second side surfaces, one of said first and second side surfaces being angularly oriented relatively to said floor surface, said angular orientation being greater than 90°

.

17. A fitting according to claim 16, wherein said second surface has said angular orientation.

18. A fitting according to claim 16, wherein said floor surface is oriented angularly with respect to a surface of said pipe.

19. A fitting according to claim 16, wherein said second side surface is comprised of first and second surface portions, said first surface portion being positioned adjacent to said floor surface and being oriented substantially perpendicularly thereto, said second surface portion being oriented at said angular orientation greater than 90°

.

20. A fitting according to claim 18, wherein said first side surface is oriented substantially perpendicularly to said floor surface.

21. A fitting according to claim 16, wherein said fitting is selected from the group consisting of elbow fittings, flanged fittings, tee fittings, reducing fittings and valve fittings.

22. A fitting having a circumferential groove proximate to one end thereof, said groove being formed in a surface of said fitting and defined by side portions positioned in spaced apart relation opposite to one another, and a floor connecting said side portions, said groove having a first width, measured at the surface of said fitting, and a second width, measured at said floor, said first width being greater than said second width.

23. A fitting according to claim 22, wherein one of said side portions has a convex cross-sectional shape.

24. A fitting according to claim 22, wherein one of said side portions has a concave cross-sectional shape.

25. A fitting according to claim 22, wherein one of said side portions comprises a first angularly oriented portion positioned adjacent to said fitting surface and a second angularly oriented portion positioned adjacent to said floor.

26. A fitting according to claim 25, wherein the slope of said first angularly oriented portion is greater than the slope of said second angularly oriented portion.

27. A fitting according to claim 25, wherein the slope of said first angularly oriented portion is less than the slope of said second angularly oriented portion.

28. A fitting according to claim 22, wherein one of said side portions comprises a first angularly oriented portion positioned adjacent to said fitting surface and a second portion positioned adjacent to said floor, said second portion having a concave cross-sectional shape.

29. A fitting according to claim 22, wherein said fitting is selected from the group consisting of elbow fittings, flanged fittings, tee fittings, reducing fittings and valve fittings.

30. A fitting having a circumferential groove proximate to one end thereof, said groove being formed in a surface of said fitting and defined by side portions positioned in spaced apart relation opposite to one another, said side portions being angularly oriented relatively to one another to define a substantially wedge-shaped cross-section.

31. A fitting according to claim 30, wherein one of said side portions is oriented substantially perpendicularly to said surface of said pipe.