James R Netzel

US Patent:

8227350, Jul 24, 2012

Filed:

Jan 2, 2009

Appl. No.:

12/348240

Inventors:

Charles West - Chicago IL, US
John Carlisle - Plainfield IL, US
James Netzel - Romeoville IL, US
Ian Wylie - Romeoville IL, US
Neil Kane - Romeoville IL, US

Assignee:

Advanced Diamond Technologies, Inc. - Romeoville IL

International Classification:

H01L 21/304

US Classification:

438690, 438699, 257E2123, 257E21215

Abstract:

A method comprising: providing at least one first diamond film comprising polycrystalline diamond, e. g. , nanocrystalline or ultrananocrystalline diamond, disposed on a substrate, wherein the first diamond film comprises a surface comprising diamond asperities and having a first diamond film thickness, removing asperities from the first diamond film to form a second diamond film having a second diamond film thickness, wherein the second thickness is either substantially the same as the first thickness, or the second thickness is about 100 nm or less thinner than the first diamond film thickness, optionally patterning the second diamond film to expose substrate regions and, optionally, depositing semiconductor material on the exposed substrate regions, and depositing a solid layer on the second diamond film to form a first layered structure. Applications include for example dielectric isolation in the semiconductor industry, as well as surface acoustic wave devices, scanning probe microscope, and atomic force microscope devices.

US Patent:

8232559, Jul 31, 2012

Filed:

Jan 31, 2011

Appl. No.:

13/018252

Inventors:

Charles West - Chicago IL, US
John Carlisle - Plainfield IL, US
James Netzel - Romeoville IL, US
Ian Wylie - Romeoville IL, US
Neil Kane - Romeoville IL, US

Assignee:

Advanced Diamond Technologies, Inc. - Romeoville IL

International Classification:

H01L 29/15

US Classification:

257 77, 257E2123, 257E29003

Abstract:

A method comprising: providing at least one first diamond film comprising polycrystalline diamond, e. g. , nanocrystalline or ultrananocrystalline diamond, disposed on a substrate, wherein the first diamond film comprises a surface comprising diamond asperities and having a first diamond film thickness, removing asperities from the first diamond film to form a second diamond film having a second diamond film thickness, wherein the second thickness is either substantially the same as the first thickness, or the second thickness is about 100 nm or less thinner than the first diamond film thickness, optionally patterning the second diamond film to expose substrate regions and, optionally, depositing semiconductor material on the exposed substrate regions, and depositing a solid layer on the second diamond film to form a first layered structure. Applications include for example dielectric isolation in the semiconductor industry, as well as surface acoustic wave devices, scanning probe microscope, and atomic force microscope devices.

US Patent:

43772900, Mar 22, 1983

Filed:

Mar 22, 1982

Appl. No.:

6/360581

Inventors:

James P. Netzel - Skokie IL

Assignee:

John Crane-Houdaille, Inc. - Chicago IL

International Classification:

F16J 1534

US Classification:

277 38

Abstract:

A symmetrical package seal containing two balanced end face seals, the stationary components being adapted for use with shafts of different sizes. In addition, the package seal has means for centering the rotating components relative to the stationary components, for aligning the sealing faces parallel contact, and for bleeding fluid from the chamber formed by the end face seals.

US Patent:

57135762, Feb 3, 1998

Filed:

Sep 29, 1994

Appl. No.:

8/314675

Inventors:

James R. Wasser - Des Plaines IL
Douglas J. Volden - Park Ridge IL
James P. Netzel - Skokie IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

F16J 1538

US Classification:

277 1

Abstract:

A double, back to back oriented mechanical end face seal arrangement for use in sealing pumps or other devices used in fluid transfer of toxic or corrosive fluid has an intermediate buffer fluid chamber into which a relatively inert gas, such as nitrogen, is provided for use as a buffer fluid, and is maintained at a pressure which exceeds the process fluid pressure by at least 10 p. s. i. Each seal has a primary ring and a mating ring with gap maintaining means, such as spiral pumping grooves, formed in one of the rings which are shaped and dimensioned to pump the buffer gas through the first seal from the intermediate chamber into the process fluid chamber against the process fluid pressure and through the second seal from the intermediate chamber into the environment external to the housing and sealing area, thus avoiding the escape of the process fluid into the intermediate buffer chamber and thereby to the atmosphere. The inboard seal includes a first secondary sealing means disposed between one seal ring and the housing for sealing therebetween and a second secondary sealing means, disposed between the other seal ring and the shaft for sealing therebetween, the first and second secondary sealing means, which may comprise O-rings, each defining the boundary between the intermediate chamber and the process fluid chamber. The first and second secondary sealing means of the first rotary mechanical end face seal are sized and disposed to define radial walls in the back radial surfaces of each seal ring to thereby present essentially an equal area at an approximately identical radius, such that essentially the same mount of buffer fluid pressure acts on the back radial surfaces of each ring of the first rotary mechanical and face seal but in opposite directions and, on the process fluid side, the identical process fluid pressure acts on opposite sides of a portion of the respective rings of the first rotary mechanical end face seal essentially eliminating thrust forces acting on the first rotary mechanical end face seal.

US Patent:

62101072, Apr 3, 2001

Filed:

Feb 14, 1995

Appl. No.:

8/390648

Inventors:

Douglas J. Volden - Park Ridge IL
Richard Hosanna - Morton Grove IL
James P. Netzel - Skokie IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

F01D 1100

US Classification:

4151701

Abstract:

This invention relates to barrier seal systems for sealing the annular space between a housing and a rotating shaft which extends through a bore in the housing. The seal system has inboard and outboard mechanical end face seals. The inboard seal faces have spiral grooves for pumping a buffer fluid from a buffer chamber between the two seals toward the high pressure side of the inboard seal. The primary ring of the inboard seal may be double balanced. For high pressure applications, the buffer fluid may be pressurized and a pumping ring may be included in the outboard seal to circulate buffer fluid. High pressure applications also require two hard seal rings and optimum dam and face widths. Buffer fluid can be supplied to the seal system by a reservoir connected by a gravity feed line. A buffer fluid containment device may be attached to the high pressure side of the seal to prevent process fluid from contaminating the seal faces or secondary seals.

US Patent:

52498123, Oct 5, 1993

Filed:

Mar 12, 1990

Appl. No.:

7/491980

Inventors:

Douglas J. Volden - Park Ridge IL
Richard Hosanna - Morton Grove IL
James P. Netzel - Skokie IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

F16J 1532

US Classification:

277 15

Abstract:

This invention relates to barrier seal systems for sealing the annular space between a housing and a rotating shaft which extends through a bore in the housing. The seal system has inboard and outboard mechanical end face seals. The inboard seal faces have spiral grooves for pumping a buffer fluid from a buffer chamber between the two seals toward the high pressure side of the inboard seal. The primary ring of the inboard seal may be double balanced. For high pressure applications, the buffer fluid may be pressurized and a pumping ring may be included in the outboard seal to circulate buffer fluid. High pressure applications also require two hard seal rings and optimum dam and face widths. Buffer fluid can be supplied to the seal system by a reservoir connected by a gravity feed line. A buffer fluid containment device may be attached to the high pressure side of the seal to prevent process fluid from contaminating the seal faces or secondary seals.

US Patent:

53758536, Dec 27, 1994

Filed:

Sep 18, 1992

Appl. No.:

7/946914

Inventors:

James R. Wasser - Des Plaines IL
Douglas J. Volden - Park Ridge IL
James P. Netzel - Skokie IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

F16J 1516

US Classification:

277 59

Abstract:

A double, back to back oriented mechanical end face seal for use in sealing toxic or corrosive fluids having an intermediate buffer fluid chamber into which a relatively inert gas, such as nitrogen, is provided for use as a buffer fluid. The nitrogen gas is maintained at a pressure which exceeds the process fluid pressure by at least 10 p. s. i. and, in a preferred embodiment, spiral pumping grooves in the mating rings of each of the seals are shaped and dimensioned to pump the nitrogen buffer gas through the first seal from the intermediate chamber into the process fluid chamber and through the second seal from the intermediate chamber into the environment external to the housing and sealing area, thereby avoiding the escape of the process fluid into the intermediate buffer chamber and to the atmosphere. Contamination of the process fluid by the buffer gas may be tolerated. The buffer gas may be any relatively inert gas, a gas which is non-hazardous to the environment and also is compatible with the process fluid used; appropriate examples are nitrogen, carbon dioxide, air or one of the noble gases.

US Patent:

46697381, Jun 2, 1987

Filed:

Apr 25, 1985

Appl. No.:

6/727061

Inventors:

James P. Netzel - Skokie IL

Assignee:

John Crane-Houdaille, Inc. - Morton Grove IL

International Classification:

F16J 1534

US Classification:

277 40

Abstract:

A package seal particularly suited to pumps or other applications having a drive shaft which terminates internally of a housing at its connection to the impeller or fluid working element. In such an apparatus partial disassembly of the components provides access to the free end of the drive shaft. The package seal has an outer member adapted to be disposed coaxially on the rotatable shaft and pass through the housing bore. The outer member includes a mounting flange adapted to be secured in the interior of the housing and a cylindrical body adapted to extend axially along the rotatable shaft from the seal flange to the exterior of the housing. The cylindrical body houses the seal components which provide a fluid tight seal between the housing and shaft.