Taper pipe joint
OwnerMajor Gene Butlerinventor
Life of this patent
Estimating the term…
Abstract
A taper pipe joint formed by telescoping a pin inside a bell, wherein the bell has an outer cylindrical section and an inner conical section tapering inwardly, and the pin also has a conical section tapering inwardly. The taper angle of the pin's conical section is greater than the taper angle of the bell's conical section. An adhesive is disposed in the cavity between the inner conical surface of the bell and the outer conical surface of the pin to establish a sealed joint therebetween and to form a solid ring at the mouth of the joint.
Claims10
The method of making a taper pipe joint between a first metal pipe and a second metal pipe, characterized by:
- (a) making a bell at one end of the first pipe, said bell having a cylindrical section and an adjacent conical end section tapering inwardly toward the longitudinal axis of the pipe;
- the inner diameter of the bell's cylindrical section being slightly smaller than the outer diameter of the second pipe to form a metal-to-metal interference fit therebetween;
- (b) making a pin at one end of the second pipe, said pin having a conical end section tapering inwardly and whose taper angle is larger than the taper angle of the bell's conical section, whereby the angular difference between said conical sections defines a cavity therebetween, and
- (c) placing a liquid adhesive in said cavity, between the inner conical wall of the bell and the outer conical wall of the pin, to thereby form a sealed joint between said conical sections, and an annular ring at the mouth of said cavity.
A taper pipe joint for connecting the ends of a pair of pipe metal sections, comprising:
- (a) coaxially inter-engageable, inner and outer, conically-tapered, pin-and-bell end portions on the respective pipe sections;
- (b) the angle of taper of the inner pin-end portion being greater than the angle of taper of the outer bell-end portion, whereby the angular difference between said tapered portions defines a conical cavity therebetween;
- (c) the relative diameters of said pipe sections at the inner ends of said tapered end portions being such as to define a metal-to-metal interference fit between the pipe sections;
- and
- (d) an adhesive interposed in compressed relation between the inter-engaged tapered end portions, said adhesive forming a solid wall in said cavity and an annular ring at the mouth of said cavity.
In a pipe joint the combination of:
- a first metal pipe section and a second metal pipe section, said first pipe section having an integral bell consisting of (1) a cylindrical portion of substantial length and having a bore whose diameter is slightly smaller than the outer diameter of the second pipe section to form a metal-to-metal interference fit therebetween, and of (2) a conical portion extending from said cylindrical portion and tapering inwardly;
- said second pipe section having an integral pin consisting of a conical portion tapering inwardly, the length of the pin's conical portion being slightly smaller than the length of the bell's conical portion, and the conical portion of the bell having an angle of taper smaller than the pin's angle of taper, whereby when the pin is forcibly and fully telescoped inside the bell, the inner conical surface of the bell and the outer conical surface of the pin form a cavity therebetween which extends from the interface between the bell's conical and cylindrical portions toward the end face of the pin;
- and
- a compressed adhesive disposed in said cavity and forming a solid wall bonding the pin to the bell.
Dependencies are inferred from the claim text.