Paramjit Te Singh

US Patent:

55777775, Nov 26, 1996

Filed:

Nov 7, 1994

Appl. No.:

8/335558

Inventors:

Paramjit Singh - Chestertown MD
Madhu K. Shenoy - Dover DE
Charles H. Schappert - West Chester PA

Assignee:

Dixon Valve & Coupling Co. - Chestertown MD

International Classification:

F16L 2500
F16L 1900

US Classification:

285354

Abstract:

A ground joint coupling for hoses comprises a stem, a ground joint head formed at a first end portion of the stem, a spud having a first end portion, a molded polymeric annular seat adapted to be positioned between the ground joint head of the stem and the first end portion of the spud, and a nut for connecting the stem to the spud and for compressing the seat between the ground joint head of the stem and the first end portion of the spud. The seat may be made of polytetrafluoroethylene, ultra high molecular weight polyethylene, polyetheretherketone compounds, polyphenylene sulfide compounds, fluoroplastic compounds, or acetal compounds, and the seat may include a filler, such as glass, moly, carbon, bronze, graphite, calcium fluoride, polyphenoline-sulfide, ceramics, silica-based minerals, or combinations thereof.

US Patent:

46038884, Aug 5, 1986

Filed:

Sep 18, 1985

Appl. No.:

6/777350

Inventors:

Richard L. Goodall - Chestertown MD
Paramjit Singh - Chestertown MD

Assignee:

Dixon Valve & Coupling Company - Chestertown MD

International Classification:

F16L 914

US Classification:

285 55

Abstract:

An end fitting for rubber steam hoses with metal liners of interlocking construction comprises a stem that has zig-zag serrations formed on an intermediate portion of its outer surface for contacting and retaining the inside of a rubber hose, and has rib-type right hand spirals formed on an inner end portion of its outer surface so that a metal liner of interlocking construction is adapted to be screwed onto the spirals for retention of the metal liner from being pulled off the ste. on the stem and preventing the metal liner from being pulled off the stem. A clamp is provided that clamps the rubber hose against the zig-zag serrations to seal the end fitting against the escape of steam, and clamps the rubber hose against the metal liner and the metal liner against the spirals and the inner end portion of the stem outer surface to provide added retention of the metal liner from being pulled off the stem. A portion of the metal liner is always between the stem and the clamp to provide this extra retention and safety against the metal liner being pulled off the stem.