David Rd Mcmillan

US Patent:

8480135, Jul 9, 2013

Filed:

Apr 8, 2011

Appl. No.:

13/083045

Inventors:

Peter C. Williams - Cleveland Heights OH, US
Howard C. B. Kuhns - Aurora OH, US
David A. McMillan - Streetsboro OH, US

Assignee:

Swagelok Company - Solon OH

International Classification:

F16L 19/06
F16L 19/08

US Classification:

285343, 2853827, 285348

Abstract:

A ferrule for a metal tube fitting includes an annular body having a generally cylindrical radially interior wall extending through the center of the ferrule. An outer radial wall extends from the ferrule front end to a rearward flange portion of the annular body. The outer radial wall has: a first tapered portion extending from the ferrule front end with an increasing radial dimension towards the rearward flange portion, the first tapered portion extending to a crown portion, the crown portion including a convex surface that tapers radially inwardly towards the rearward flange portion.

US Patent:

20140049044, Feb 20, 2014

Filed:

Jun 11, 2013

Appl. No.:

13/914867

Inventors:

Howard C.B. Kuhns - Aurora OH, US
David A. McMillan - Streetsboro OH, US

International Classification:

F16L 19/065

US Classification:

285332

Abstract:

A ferrule for a metal tube fitting includes an annular body having a generally cylindrical radially interior wall extending through the center of the ferrule. An outer radial wall extends from the ferrule front end to a rearward flange portion of the annular body. The outer radial wall has: a first tapered portion extending from the ferrule front end with an increasing radial dimension towards the rearward flange portion, the first tapered portion extending to a crown portion, the crown portion including a convex surface that tapers radially inwardly towards the rearward flange portion.

US Patent:

58820507, Mar 16, 1999

Filed:

Apr 15, 1997

Appl. No.:

8/834255

Inventors:

Peter C. Williams - Cleveland Hts. OH
David A. McMillan - Streetsboro OH
Howard C. B. Kuhns - Aurora OH

International Classification:

F16L 1906
F16L 1908

US Classification:

285343

Abstract:

High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule.

US Patent:

20150097368, Apr 9, 2015

Filed:

Jun 11, 2014

Appl. No.:

14/301366

Inventors:

- Solon OH, US
Howard C.B. Kuhns - Aurora OH, US
David A. McMillan - Streetsboro OH, US

International Classification:

F16L 19/065

US Classification:

285332

Abstract:

High localized loading, galling, and high torque forces have been generally eliminated or greatly reduced in a two ferrule tube fitting assembly through suitable modification of the rear ferrule so as to redirect the reaction forces acting between the front ferrule and the drive nut. The rear ferrule has a cylindrical interior wall that closely surrounds the tube end and is provided on the interior cylindrical wall with a circumferentially continuous radial recess that is located between the nose and rear wall of the rear ferrule. The rear ferrule also has a radially external wall that is substantially conical and additionally shaped to extend radially outward toward the enlarged diameter portion or flange of the rear ferrule.

Address:

PO Box 1372, Hephzibah, GA 30815

VIN:

JTHCE96S970002639

Make:

LEXUS

Model:

GS 350

Year:

2007