Stephen R Rowland

US Patent:

7004478, Feb 28, 2006

Filed:

Dec 7, 2001

Appl. No.:

10/005178

Inventors:

John Loyd Spence - Severna Park MD, US
Stephen B. Rowland - Laurel MD, US

Assignee:

PerkinElmer Inc. - Wellesley MA

International Classification:

F16J 15/02

US Classification:

277644, 277626

Abstract:

A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing dam over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular end section with has a first annular sealing surface, a second annular end section with a second annular sealing surface and an annular center section extending between the first and second annular end sections to form a ring having a central passageway with a center longitudinal axis. The third annular section is frustoconical tube with the first and second annular end sections being contiguously arranged at opposite ends of the annular center section such that sealing loads applied substantially perpendicularly on the first and second annular sealing surfaces primarily deform due to torsional stress of the metallic seal.

US Patent:

7100925, Sep 5, 2006

Filed:

Jul 31, 2003

Appl. No.:

10/630779

Inventors:

Jeffrey Swensen - Eldersburg MD, US
Stephen Rowland - Laurel MD, US

Assignee:

Perkin Elmer, Inc. - Wellesley MA

International Classification:

F16J 15/02
B21D 53/84

US Classification:

277644, 277647, 277626, 298883

Abstract:

A pressure-energized, annular metallic seal is provided that includes a central annular portion and a pair of annular leg portions extending from the central portion. Each leg portion includes a convex sealing surface lying in sealing plane. One of the leg portions preferably has an annular flange offset from its sealing plane in an axial direction towards the sealing plane of the other leg portion. One of the leg portions preferably has at least one radially extending tab projecting further than adjacent parts of the seal. The seal is preferably manufactured by first cutting a first annular edge in a metallic sheet material, then bending the sheet material substantially into the shape of the seal, and then cutting a second annular edge to complete the shape of the seal. The second annular edge preferably defines the annular flange and/or the at least one tab.

US Patent:

7866040, Jan 11, 2011

Filed:

Mar 31, 2006

Appl. No.:

11/393828

Inventors:

Jeffrey Swensen - Eldersburg MD, US
Stephen Rowland - Laurel MD, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

B21D 53/84

US Classification:

298883, 277647

Abstract:

A pressure-energized, annular metallic seal is provided that includes a central annular portion and a pair of annular leg portions extending from the central portion. Each leg portion includes a convex sealing surface lying in sealing plane. One of the leg portions preferably has an annular flange offset from its sealing plane in an axial direction towards the sealing plane of the other leg portion. One of the leg portions preferably has at least one radially extending tab projecting further than adjacent parts of the seal. The seal is preferably manufactured by first cutting a first annular edge in a metallic sheet material, then bending the sheet material substantially into the shape of the seal, and then cutting a second annular edge to complete the shape of the seal. The second annular edge preferably defines the annular flange and/or the at least one tab.

US Patent:

20050145501, Jul 7, 2005

Filed:

Dec 31, 2003

Appl. No.:

10/748289

Inventors:

William Bendik - Laurel MD, US
Donald Johnson - Laurel MD, US
Stephen Rowland - Laurel MD, US
Mark Higgins - Silver Spring MD, US

Assignee:

PerkinElmer, Inc. - Wellesley MA

International Classification:

C25D005/00
C25D007/00

US Classification:

205137000, 205145000

Abstract:

There is disclosed a plating process that involves the application of a soft metallic coating, composed of substantially pure metal or alloy, to resilient metal seals utilizing a high-volume, high-energy electro-deposition plating process. The process basically includes supporting a predetermined quantity of metallic seals at non-sealing surface locations with the metallic seals disposed in series on a conveyor having a predetermined processing path, and continuously moving the seals in series through an electro-plating stage of the processing path to electro-deposit a metallic coating on the seals using a high current density and a high chemical flow rate. The seals of this process are applicable to any application or industry where a large quantity of high vacuum/high purity seals are required and where traditional electro-deposition processes would not yield a sufficient quantity of finished parts or would not produce them at an acceptable cost.