Michael V Jenkins

US Patent:

6439857, Aug 27, 2002

Filed:

Mar 12, 2001

Appl. No.:

09/804013

Inventors:

Robert L. Koelzer - Kearney MO
Andrew W. Adams - Lesss Summit MO
Mark D. Schaake - Bonner Springs KS
Michael R. Jenkins - Kansas City MO

Assignee:

Haldex Brake Corporation - Kansas City MO

International Classification:

F04B 126

US Classification:

4172221, 417269, 417270, 92 71, 91504

Abstract:

An axial piston compressor produces air supplied to an air system of a vehicle, typically a heavy duty truck through a plurality of pistons held within a stationary block, and the movement of the pistons is predicated through the control of a pivotal swash plate. The pistons are idle in a neutral position of the swash plate, wherein a pressure above the pistons in the cylinder block counterbalances a thrust generated by an actuator upon the plate positioned in a plane extending perpendicular to a drive shaft. The plate oscillates in response to a pressure drop above the pistons causing the actuator to expand toward the plate and exert a thrust exceeding the lowered pressure above the pistons and enabling the swash plate to provide the pistons with reciprocal motion.

US Patent:

6480584, Nov 12, 2002

Filed:

Jun 28, 2001

Appl. No.:

09/894051

Inventors:

Joe W. Duran - Austin TX
Michael Vayden Jenkins - Austin TX
William Todd Clayton - Austin TX

Assignee:

Forgent Networks, Inc. - Austin TX

International Classification:

H04M 1100

US Classification:

379 9321, 37920201, 348 1408

Abstract:

A teleconferencing system with capability to store incoming multiple medium messages for later retrieval and playback is disclosed. The system includes a communications multiplexer which, in normal mode, receives the incoming message and routes the message to various output functions, including video, audio, and computer display. In store mode, the communications multiplexer receives the incoming message and communicates it to disk storage, for example by way of direct memory access. During playback, the communications multiplexer receives data from the disk storage, and controls its communication to the various output functions, in the same manner as during receipt of a normal incoming message during an interactive teleconference. As a result, multiple medium messages may be stored for later retrieval, with the playback appearing in the same manner as a conventional teleconference message.

US Patent:

6674960, Jan 6, 2004

Filed:

Oct 4, 2002

Appl. No.:

10/264749

Inventors:

Joe W. Duran - Austin TX
Michael Vayden Jenkins - Austin TX
William Todd Clayton - Austin TX

Assignee:

Forgent Networks, Inc. - Austin TX

International Classification:

H04N 5781

US Classification:

386 96, 386125

Abstract:

A computer based television signal recording device is provided. This recording device allows for the recording of input streams onto a mass storage device such as a computer hard drive. The playback of individual programs can be done independently of the recording. A user interface is provided which has a list of the recorded television signals and the user can select for playback any of the listed recorded television signals.

US Patent:

6883416, Apr 26, 2005

Filed:

Jan 28, 2003

Appl. No.:

10/353249

Inventors:

Robert L. Koelzer - Kearney MO, US
Michael R. Jenkins - Kansas City MO, US

Assignee:

Haldex Brake Corporation - Kansas City MO

International Classification:

F01B003/10

US Classification:

92 122, 92 71, 91505

Abstract:

A swash plate containment assembly for a compressor is disclosed generally comprising a housing, a drive shaft, a swash plate mounted on the drive shaft, and a gimbal arm connected to the housing and swash plate via rotatable joints. In certain embodiments, the joints are located approximately ninety degrees from each other. In some embodiments, the joints comprise a roller bearing and journal coupled thereto.

US Patent:

7153105, Dec 26, 2006

Filed:

Apr 24, 2003

Appl. No.:

10/422268

Inventors:

Robert L. Koelzer - Kearney MO, US
Michael R. Jenkins - Kansas City MO, US

Assignee:

Haldex Brake Corporation - Kansas City MO

International Classification:

F04B 1/26

US Classification:

417 53, 417269, 91 122, 74839

Abstract:

A compressor is disclosed generally comprising a cylinder block at least partially enclosing a compression chamber, a swash plate housing mounted adjacent the cylinder block, the swash plate housing at least partially enclosing a swash plate chamber, an inlet port in the swash plate housing, and a passageway connecting the swash plate chamber and compression chamber. In certain embodiments, the passageway comprises a fluid channel in the cylinder block. In some embodiments, at least one bearing is disposed in the swash plate chamber such that air entering through the inlet port flows over the bearing before flowing to the compression chamber.

US Patent:

7249556, Jul 31, 2007

Filed:

Nov 29, 2004

Appl. No.:

10/998450

Inventors:

Robert L. Koelzer - Kearney MO, US
Michael R. Jenkins - Kansas City MO, US
Mark D. Schaake - Bonner Springs KS, US
Andrew W. Adams - Less's Summit MO, US

Assignee:

Haldex Brake Corporation - Kansas City MO

International Classification:

F01B 1/02

US Classification:

92 72, 92138

Abstract:

A compressor is disclosed generally comprising a cylinder head mounted to a cylinder block having a cooling chamber and a piston channel via a bolt. A piston is disposed in the piston channel and has a contact portion that contacts the channel wall, which is integrally formed with the cylinder block, as it slides within the channel. The bolt and the cooling chamber each extend from at least as high as the highest contact point between the contact portion of the piston and the channel wall to at least as low as the lowest contact point between the contact portion of the piston and the channel wall. In certain embodiments, the cooling chamber is located between the bolt and the piston channel. In some embodiments, a crankcase is integrally formed with the cylinder block.

US Patent:

7318709, Jan 15, 2008

Filed:

Aug 27, 2003

Appl. No.:

10/648881

Inventors:

Robert L. Koelzer - Kearney MO, US
Michael R. Jenkins - Kansas City MO, US

Assignee:

Haldex Brake Corporation - Kansas City MO

International Classification:

F04B 23/00

US Classification:

417441

Abstract:

A valve assembly is disclosed generally comprising first and second valve plates mounted between the housing for a pump mechanism and a cover, the first plate having flexing flaps corresponding to apertures in the second plate, and the second plate having flexing flaps corresponding to apertures in the first plate. The flexing flaps and apertures create inlet and outlet valves for fluid being received into and discharged from the pump mechanism. In some embodiments, the valves facilitate the flow of air received and discharged through inlet and outlet ports in a compressor head. In some embodiments, the valves facilitate the flow of air received from an inlet port in a compressor housing.

US Patent:

7545435, Jun 9, 2009

Filed:

Apr 15, 2005

Appl. No.:

11/107401

Inventors:

Michael V. Jenkins - Austin TX, US
Bradley Richard Ree - Austin TX, US

Assignee:

LifeSize Communications, Inc. - Austin TX

International Classification:

H04N 5/235
H04N 1/40
G06K 9/40

US Classification:

348362, 3482211, 348363, 358466, 382274

Abstract:

In some embodiments, images for the video conference may be white balanced and/or exposure controlled. White balancing may include dividing an image's pixels into multiple ranges according to their luminance and chrominance values. In some embodiments, blue and red analog gains may be modified to bring red and blue accumulations closer to green accumulations. In some embodiments, luminance values for an image may be adjusted by increasing or decreasing exposure. The decision whether to increase or decrease the exposure may be made by looking at statistics for luminance values of skin colored regions if there are sufficient skin colored regions on the image. Otherwise, luminance values for the entire image may be analyzed to determine whether to increase or decrease exposure.