Howard C Kuhns

US Patent:

20030178848, Sep 25, 2003

Filed:

Feb 25, 2003

Appl. No.:

10/374026

Inventors:

Peter Williams - Cleveland Heights OH, US
Howard Kuhns - Aurora OH, US

International Classification:

F16L019/08

US Classification:

285/382700, 285/343000

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20040113429, Jun 17, 2004

Filed:

Sep 24, 2003

Appl. No.:

10/605348

Inventors:

Peter Williams - Cleveland Heights OH, US
Howard Kuhns - Aurora OH, US

Assignee:

SWAGELOK COMPANY - Solon OH

International Classification:

F16L017/00
F16L021/02

US Classification:

285/382700, 285/342000, 285/348000

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20040119286, Jun 24, 2004

Filed:

Jan 5, 2004

Appl. No.:

10/707697

Inventors:

Peter Williams - Cleveland Heights OH, US
Howard Kuhns - Aurora OH, US

Assignee:

SWAGELOK COMPANY - Solon OH

International Classification:

F16L019/04

US Classification:

285/382700

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20040119287, Jun 24, 2004

Filed:

Jan 5, 2004

Appl. No.:

10/707698

Inventors:

Peter Williams - Cleveland Heights OH, US
Howard Kuhns - Aurora OH, US

Assignee:

SWAGELOK COMPANY - Solon OH

International Classification:

F16L019/04

US Classification:

285/382700

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20060273581, Dec 7, 2006

Filed:

Aug 8, 2006

Appl. No.:

11/463024

Inventors:

Peter Williams - Cleveland Heights OH, US
Howard Kuhns - Aurora OH, US

Assignee:

SWAGELOK COMPANY - Solon OH

International Classification:

F16L 47/00

US Classification:

285249000

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20070045587, Mar 1, 2007

Filed:

Apr 13, 2004

Appl. No.:

10/551480

Inventors:

Terrence Kolenc - Mentor OH, US
Howard Kuhns - Aurora OH, US
William Glime - Painsville Twp OH, US
Carl Meece - Moreland Hills OH, US
Gerhard Schiroky - Aurora OH, US

International Classification:

F16K 1/00

US Classification:

251331000

Abstract:

A thermally and chemically inert valve seat is provided. The valve seat includes a sharp edge located on the periphery of the valve seat body, wherein the edge digs into a surface within the valve body to secure the valve seat. The valve seat may be case hardened to provide additional strength and sealing ability. The inner diameter of the valve seat may be flush against the valve fluid passageway, thereby decreasing the contact area between the diaphragm and the valve seat.

US Patent:

20080296895, Dec 4, 2008

Filed:

May 5, 2008

Appl. No.:

12/115096

Inventors:

Peter C. Williams - Cleveland Heights OH, US
Howard C.B. Kuhns - Aurora OH, US

Assignee:

Swagelok Company - Solon OH

International Classification:

F16L 19/10

US Classification:

2853827

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. The rear ferrule further includes a contoured face on the rear driven surface of the ferrule that engages the drive surface of the drive nut.

US Patent:

20100025990, Feb 4, 2010

Filed:

Oct 14, 2009

Appl. No.:

12/578631

Inventors:

Peter C. Williams - Cleveland Heights OH, US
Howard C.B. Kuhns - Aurora OH, US

Assignee:

Swagelok Company - Solon OH

International Classification:

F16L 19/06
F16L 19/08

US Classification:

285342, 285343

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.