Pipe fitting incorporating a spherical spin weld
AssigneeSpears Manufacturing Co.
InventorDouglas Swingley
Life of this patent
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Abstract
A two-piece connection between a supply pipe from a source of water and a connection to a fire sprinkler with the connector having a first or rear section entirely above a ceiling and a second or front section connected to the first section with the connection entirely above a ceiling and the forward portion of second section connected to the fire sprinkler. The first connector section, located entirely above a ceiling, has a spherical male sidewall with a rounded leading edge and a rear portion of the second connector section has a spherical female interior surface.
Claims18
A pipe comprising:
- (a) a first section including a first interior chamber extending through the first section and a spherical exterior sidewall extending around a front exterior portion of the first section;
- (b) a second section including a second interior chamber extending through the second section, the second interior chamber having a spherical female interior surface leading to a cylindrical interior surface with female interior threads;
- (c) wherein the spherical exterior sidewall of the first section is configured to mate with the spherical female interior wall of the second section to facilitate a spin welding connection between the first section and the second section.
A pipe connector comprising:
- (a) a first section including at least an exterior rounded sidewall;
- (b) a second section including rounded female interior surface;
- and
- (c) the exterior rounded sidewall of the first section configured to mate with the rounded female interior surface of the second section to form a spin weld between the first section and the second section.
-19. (canceled)
Dependencies are inferred from the claim text.