Michael L Mckenna

US Patent:

6305664, Oct 23, 2001

Filed:

Apr 17, 2000

Appl. No.:

9/550139

Inventors:

Garrett R. Holmes - Ortonville MI
Michael D. McKenna - Troy MI

Assignee:

BorgWarner Inc. - Troy MI

International Classification:

F16K 3102

US Classification:

25112918

Abstract:

A proportional variable bleed solenoid valve that includes magnetic force adjustments to provide magnetic calibration. The control valve includes a housing defining a chamber, where an electromagnetic coil is wound on a bobbin and is coaxially mounted within the housing. A movable armature is coaxially positioned within the bobbin in the chamber and has an armature poppet valve extending form a bottom end of the armature. An armature spring is in contact with an upper end of the armature and a top wall of the bobbin, where the spring positions the armature in an initial position when the coil is not energized and where the armature moves to a second position in conjunction with the bias of the armature spring when the coil is energized. A pole piece is mounted to the housing and is positioned adjacent to the lower end of the armature to define an air gap between the pole piece and the armature. The pole piece includes an extended annular ring positioned below the lower end of the armature such that the armature poppet valve extends through the ring.

US Patent:

6068237, May 30, 2000

Filed:

Jun 9, 1998

Appl. No.:

9/094303

Inventors:

Garrett R. Holmes - Ortonville MI
Michael D. McKenna - Warren MI

Assignee:

Borg-Warner Automotive, Inc. - Troy MI

International Classification:

F16K 3102
F16K 100
F16K 3100

US Classification:

25112918

Abstract:

A proportional variable bleed solenoid valve that includes magnetic force adjustments to provide magnetic calibration. The control valve includes a housing defining a chamber, where an electromagnetic coil is wound on a bobbin and is coaxially mounted within the housing. A movable armature is coaxially positioned within the bobbin in the chamber and has an armature poppet valve extending form a bottom end of the armature. An armature spring is in contact with an upper end of the armature and a top wall of the bobbin, where the spring positions the armature in an initial position when the coil is not energized and where the armature moves to a second position in conjunction with the bias of the armature spring when the coil is energized. A pole piece is mounted to the housing and is positioned adjacent to the lower end of the armature to define an air gap between the pole piece and the armature. The pole piece includes an extended annular ring positioned below the lower end of the armature such that the armature poppet valve extends through the ring.

US Patent:

20210000590, Jan 7, 2021

Filed:

Sep 22, 2020

Appl. No.:

17/027941

Inventors:

- Boston MA, US
- Cambridge MA, US
Nicole Leah Black - Shelby Twp MI, US
Michael J. McKenna - Southborough MA, US
Daniel J. Lee - Brookline MA, US
Jennifer A. Lewis - Cambridge MA, US
John Rosowski - Arlington MA, US
David B. Kolesky - Cambridge MA, US
Alexander D. Valentine - Windham NH, US

International Classification:

A61F 2/18
A61L 27/26
A61L 27/38
A61L 27/54

Abstract:

This disclosure features artificial tympanic membrane graft devices and two-component bilayer graft devices that include a scaffold having a plurality of ribs made of a first material and a plurality of spaces between the ribs filled or made with the first material, a different, second material, a combination of the first and a second materials, or a combination of a second material and one or more other different materials. The bilayer graft devices have two components or layers. One component, e.g., the underlay graft device, can include a projection, and the second component, e.g., the overlay graft device, can include an opening that corresponds to the projection (or vice versa) so that the opening and the projection can secure the two layers together in a “lock and key” manner. This disclosure also features methods of making, using, and implanting the three-dimensional artificial tympanic membrane and bilayer graft devices.

US Patent:

20180042718, Feb 15, 2018

Filed:

Mar 21, 2016

Appl. No.:

15/559582

Inventors:

- Boston MA, US
- Cambridge MA, US
Nicole Black - Shelby Twp MI, US
Michael J. McKenna - Southborough MA, US
Daniel J. Lee - Brookline MA, US
Jennifer Lewis - Cambridge MA, US
John Rosowski - Arlington MA, US
David Kolesky - Cambridge MA, US
Alexander D. Valentine - Windham NH, US

International Classification:

A61F 2/18
A61L 27/54
A61L 27/38
A61L 27/26

Abstract:

This disclosure features artificial tympanic membrane graft devices and two-component bilayer graft devices that include a scaffold having a plurality of ribs made of a first material and a plurality of spaces between the ribs filled or made with the first material, a different, second material, a combination of the first and a second materials, or a combination of a second material and one or more other different materials. The bilayer graft devices have two components or layers. One component, e.g., the under-lay graft device, can include a projection, and the second component, e.g., the overlay graft device, can include an opening that corresponds to the projection (or vice versa) so that the opening and the projection can secure the two layers together in a “lock and key” manner. This disclosure also features methods of making, using, and implanting the three-dimensional artificial tympanic membrane and bilayer graft devices.