Michael J Lehr

US Patent:

7889477, Feb 15, 2011

Filed:

Jun 22, 2007

Appl. No.:

11/767295

Inventors:

Stuart Neubarth - Mountain View CA, US
Michael A. Lehr - Mountain View CA, US
Scott Gehlke - Berkeley CA, US
Peter Gefter - South San Francisco CA, US

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

H01T 23/00

US Classification:

361212

Abstract:

A high voltage power supply for a static neutralizer is disclosed. The high voltage power supply includes a resonant converter and a load with an emitter module having an emitter, reference electrode, and a capacitance value. The resonant converter is disposed to have a resonant frequency and an output coupled to the load. The resonant converter generates an output waveform with an amplitude sufficient for generating to ions by corona discharge when the load receives the output waveform. The load is predominantly capacitive when the resonant converter is operating at the resonant frequency.

US Patent:

20040033843, Feb 19, 2004

Filed:

Jul 21, 2003

Appl. No.:

10/624760

Inventors:

John Miller - San Francisco CA, US
Stuart Neubarth - Mountain View CA, US
Michael Lehr - Mountain View CA, US
David Kehlet - Los Altos CA, US

International Classification:

A63B057/00

US Classification:

473/274000

Abstract:

A golf learning aid is directed to improving an individual's golf swing by monitoring spine angle during a golf swing and alerting the individual when the spine angle varies outside of a predetermined maximum spine angle range during the swing. The system includes a device affixed to a top portion of a cap worn by the user, and an earpiece affixed to the device for playing an audible alert. The device employs a microcontroller, a tilt sensor and a system of buffering and filtering to provide real-time feedback on a user's spine angle during the swing. It is an additional feature of the system that the microcontroller generates an audible and repetitive tone as a metronome cadence when the microcontroller detects that the user is set up for a golf swing. The metronome cadence is provided to improve one's rhythm and timing in the golf swing and golf swing routine.

US Patent:

20130308256, Nov 21, 2013

Filed:

Mar 9, 2011

Appl. No.:

13/982485

Inventors:

Michael Lehr - Sunnyvale CA, US
Manjirnath Chatterjee - San Francisco CA, US
Dyke Shaffer - Santa Rosa CA, US
Eric Liu - Santa Clara CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Fort Collins CO

International Classification:

H04B 5/00

US Classification:

36167901, 307104

Abstract:

A coil assembly is disclosed. The coil assembly includes a coil that is provided on a substrate. The coil includes a trace element that is wound on the substrate. The trace element includes an interior gap that extends or is present along at least a portion of the trace element. The interior gap is dimensioned to reduce a presence of eddy currents that would otherwise be generated when the coil is active to inductively transmit or receive signals.

US Patent:

57938750, Aug 11, 1998

Filed:

Apr 22, 1996

Appl. No.:

8/635550

Inventors:

Michael A. Lehr - Palo Alto CA
Bernard Widrow - Stanford CA

Assignee:

Cardinal Sound Labs, Inc. - Stanford CA

International Classification:

H04R 2500

US Classification:

381 681

Abstract:

A directional acoustic receiving system is constructed in the form of a necklace including an array of two or more microphones mounted on a housing supported on the chest of a user by a conducting loop encircling the user's neck. Signal processing electronics contained in the same housing receives and combines the microphone signals in such a manner as to provide an amplified output signal which emphasizes sounds of interest arriving in a direction forward of the user. The amplified output signal drives the supporting conducting loop to produce a representative magnetic field. An electroacoustic transducer including a magnetic field pickup coil for receiving the magnetic field is mounted in or on the user's ear and generates an acoustic signal representative of the sounds of interest. The microphone output signals are weighted (scaled) and combined to achieve desired spatial directivity responses. The weighting coefficients are determined by an optimization process.

US Patent:

20180284936, Oct 4, 2018

Filed:

Nov 14, 2017

Appl. No.:

15/812048

Inventors:

- Cupertino CA, US
Hari Vasudevan - Los Gatos CA, US
Michael A. Lehr - Mountain View CA, US
Wesley S. Smith - Mountain View CA, US

International Classification:

G06F 3/041

Abstract:

An electronic device can include a force and touch sensing system. In one embodiment, an input force sensor device of an electronic device is disclosed.

US Patent:

20160273986, Sep 22, 2016

Filed:

Mar 16, 2015

Appl. No.:

14/659447

Inventors:

- Cupertino CA, US
Michael A. Lehr - Mountain View CA, US
David MacNeil - Cupertino CA, US
Henry H. Yang - Los Gatos CA, US

International Classification:

G01L 9/00
G01L 27/00

Abstract:

An electronic device may include one or more low-noise pressure sensors for measuring air pressure. The electronic device may include wireless communications circuitry for communicating with external devices also having pressure sensors. Pressure data gathered by an external device may be used as reference pressure data for the electronic device. For example, if both devices are located in the same building, both pressure sensors will detect similar pressure fluctuations due to doors opening and closing and temperature-control systems turning on and off. By subtracting the reference pressure data from the pressure data gathered by the electronic device, calibrated pressure data may be obtained and may be used to reliably detect vertical displacement changes of the electronic device. In other scenarios, the pressure data may be compared with the reference pressure data to determine whether the two devices are in the same MOM.