Jonathan W Mitchell

US Patent:

6362417, Mar 26, 2002

Filed:

Dec 15, 2000

Appl. No.:

09/737195

Inventors:

Jonathan E. Mitchell - Cambridge MA
Charlene Andersen - Haverhill MA

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H05K 900

US Classification:

174 35GC, 174 35 MS, 174 35 R, 361816, 361692, 361693, 454184

Abstract:

An electromagnetic interference (EMI) shielded vent panel construction for disposition over an opening of an electronics enclosure. The panel includes an electrically-conductive medium having an outer periphery supported within an electrically-conductive frame. The frame is configured as having a generally C-shaped cross-sectional profile and includes an elongate end wall having an interior an exterior surface, and a pair of oppositely-disposed side walls extending from the end wall interior surface. Each of the side walls has an outer surface, one of which is disposable about the opening of the enclosure in electrically-conductive adjacency with the surface thereof, and an inner surface spaced-apart a first predetermined distance from the inner surface of the other of the side walls. The outer periphery of the medium is received intermediate the inner surfaces of the side walls such that each extends over a corresponding edge portion of the medium faces. Along with the medium, an electrically-conductive gasket is disposed intermediate the inner surface of a first one of the side walls and the edge portion of a first one of the medium faces.

US Patent:

6426459, Jul 30, 2002

Filed:

Jul 20, 2000

Appl. No.:

09/620453

Inventors:

Jonathan E. Mitchell - Norwood MA

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H05K 900

US Classification:

174 35MS, 174 35 R, 361692, 361693, 361816, 454184

Abstract:

An electromagnetic interference (EMI) shielded vent panel construction for disposition over an opening of an electronics enclosure. The panel includes an electrically-conductive media having an outer periphery supported within an electrically-conductive frame. The frame is configured as including an elongate end wall, and a pair of oppositely-disposed side walls. Each of the side walls has an outer surface, one of which is disposable about the opening of the enclosure in electrically-conductive adjacency with the surface thereof, and an inner surface spaced-apart from the inner surface of the other of the side walls. The outer periphery of the media is retained intermediate the inner surfaces of the side walls. At least one of the side walls is formed as having a series of spaced-apart first tabs defined therein along the perimeter of the frame, each of the first tabs having a proximal end and a downwardly-depending distal end which contacts the corresponding edge portion of the media effective to provide electrical contact between the frame and the media.

US Patent:

6462267, Oct 8, 2002

Filed:

Jul 19, 1999

Appl. No.:

09/356426

Inventors:

George H. Spies - Wakefield MA
Richard A. Hamel - Derry NH
Jonathan E. Mitchell - Cambridge MA
William Lionetta - Winchester MA
James A. Bradley - Billerica MA

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H05K 900

US Classification:

174 35GC, 277653, 277920

Abstract:

An electromagnetic interference (EMI) shielding gasket. The gasket is formed as having a resilient core member of an indefinite length which is sheathed in an electrically conductive fiber mesh member. A thermoplastic member is incorporated within the fiber mesh member for consolidating at least a portion of the fiber mesh member. The consolidation is effective to maintain the integrity of the fiber mesh member at an end of the gasket when the gasket is terminated to a determinable length.

US Patent:

59424621, Aug 24, 1999

Filed:

Oct 20, 1997

Appl. No.:

8/796726

Inventors:

Jonathan P. Mitchell - Hastings on Hudson NY
Michael E. Villafane - White Plains NY

Assignee:

Akzo Nobel N.V.

International Classification:

B01J 3100
C07F 1100

US Classification:

502155

Abstract:

A Group 6 metal-containing, ligand-containing olefin polymerization catalyst component can be made by using an unsolvated Group 6 metal trihalide as the starting reagent for the Group 6 metal which comprises contacting (e. g. , in tetrahydrofuran) the Group VIB metal trihalide, such as chromium trichloride, with a ligand reagent or reagents, such as a cyclopentadienyl-containing lithium compound and a lower alkyl-containing lithium compound, in the presence of a sigma donor ligand, such as pyridine.

US Patent:

59962208, Dec 7, 1999

Filed:

Jun 12, 1998

Appl. No.:

9/097033

Inventors:

George H. Spies - Wakefield MA
Richard A. Hamel - Derry MA
Jonathan E. Mitchell - Cambridge MA
William Lionetta - Winchester MA
James A. Bradley - Billerica MA

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H01R 4300

US Classification:

29825

Abstract:

Method of terminating at least one end of an EMI shielding gasket having an indefinite length. A resilient core member of an indefinite length is sheathed within an electrically conductive fiber mesh member. A thermoplastic member is incorporated within the conductive fiber mesh member, and then is heated to effect its melting which, in turn, effects the consolidation of at least a portion of the fiber mesh member. The gasket so formed then is terminated to a determinable length having an end through a consolidated portion of the fiber mesh member. The consolidated portion is effective to maintain the integrity of the fiber mesh member at the terminated end.

US Patent:

62114581, Apr 3, 2001

Filed:

Feb 3, 1999

Appl. No.:

9/243778

Inventors:

Jonathan E. Mitchell - Cambridge MA
Charlene Andersen - Haverhill MA

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H05K 900

US Classification:

174 35R

Abstract:

An electromagnetic interference (EMI) shielded vent panel construction for disposition over an opening of an electronics enclosure. The panel includes an electrically-conductive medium having an outer periphery supported within an electrically-conductive frame. The frame is configured as having a generally C-shaped cross-sectional profile and includes an elongate end wall having an interior an exterior surface, and a pair of oppositely-disposed side walls extending from the end wall interior surface. Each of the side walls has an outer surface, one of which is disposable about the opening of the enclosure in electrically-conductive adjacency with the surface thereof, and an inner surface spaced-apart a first predetermined distance from the inner surface of the other of the side walls. The outer periphery of the medium is received intermediate the inner surfaces of the side walls such that each extends over a corresponding edge portion of the medium faces. Along with the medium, an electrically-conductive gasket is disposed intermediate the inner surface of a first one of the side walls and the edge portion of a first one of the medium faces.