John Schultz

US Patent:

7343814, Mar 18, 2008

Filed:

Apr 3, 2006

Appl. No.:

11/397507

Inventors:

Divyasimha Harish - Union City CA, US
William D. Dallenbach - Sunnyvale CA, US
King Wong - Saratoga CA, US
John Schultz - Santa Clara CA, US

Assignee:

Loadstar Sensors, Inc. - Mountain View CA

International Classification:

G01B 7/16

US Classification:

73780, 73718, 73777, 73862625, 73862626

Abstract:

A multi-zone capacitive force sensing apparatus/method is disclosed. In one embodiment, an apparatus includes one or more capacitors each having an upper conductive surface and a lower conductive surface substantially parallel to the upper conductive surface, a housing with a top plate and a bottom plate to encompass the capacitors, and a sensor in the housing to generate a measurement based on a change in a distance between the upper conductive surface and the lower conductive surface of each of the capacitors when a contact zone of the top plate associated with the each of the plurality of capacitors is deflected by a force applied on the contact zone. The apparatus may also include a comparison module associated with the sensor to generate a signal indicating unevenness of a force applied on the top plate when there is any significant difference between measurements of the capacitors.

US Patent:

7570065, Aug 4, 2009

Filed:

Mar 1, 2006

Appl. No.:

11/365358

Inventors:

Divyasimha Harish - Union City CA, US
William D. Dallenbach - Sunnyvale CA, US
King Wong - Saratoga CA, US
John Schultz - Santa Clara CA, US

Assignee:

Loadstar Sensors Inc - Fremont CA

International Classification:

G01R 27/26
G01L 1/00

US Classification:

324662, 324661, 324686, 73780, 73862626

Abstract:

Cylindrical capacitance force sensing device/method is disclosed. In one embodiment, an apparatus includes a capacitor having two parallel conductive surfaces, a cylindrical housing with a cover plate to encompass the capacitor, and a sensor in the cylindrical housing to generate a measurement based on a change in a distance between the two conductive surfaces when the cover plate is deflected by a load applied on the cover plate. In another embodiment, a method may include applying a load on top of a housing which encompasses a capacitive sensor having two parallel conductive surfaces to produce a deflection of a cover plate of the housing, automatically generating a measurement from the capacitive sensor when a distance between the two parallel conductive surfaces is charged due to the deflection of the cover plate, and decreasing an error in the measurement via stabilizing to a mounting surface.

US Patent:

7743667, Jun 29, 2010

Filed:

Feb 12, 2007

Appl. No.:

11/705273

Inventors:

Divyasimha Harish - Union City CA, US
Jonathan T Lim - Fremont CA, US
King Wong - Saratoga CA, US
John Schultz - Santa Clara CA, US

Assignee:

Loadstar Sensors, Inc. - Fremont CA

International Classification:

G01B 7/16

US Classification:

73780

Abstract:

A capacitive device and method with an enhanced measurement error correction capability is disclosed. In one embodiment, an apparatus includes a sensor capacitor based on one or more pairs of parallel conductor surfaces, a housing to encompass the sensor capacitor, a digitizer module in the housing to generate a digital measurement based on a change in a capacitance of the sensor capacitor when a contact zone of the housing is deflected by a force applied on the contact zone. The apparatus also includes a compensation module of the digitizer module to apply another digital measurement of one or more distortion factors to the digital measurement to minimize an effect of the one or more distortion factors to the apparatus. In addition, the apparatus includes a communication module to communicate an analog signal and/or a digital signal through a wired channel and/or a wireless channel.

US Patent:

20090158856, Jun 25, 2009

Filed:

Dec 23, 2008

Appl. No.:

12/343164

Inventors:

Divyasimha Harish - Fremont CA, US
John Schultz - Santa Clara CA, US

International Classification:

G01L 1/14
G01R 27/26

US Classification:

73780, 324660

Abstract:

A system and methods of a capacitive strain gauge are disclosed. In one embodiment, a system includes a conductive element of a capacitive structure attached to a surface. The conductive element is comprised of an elongated member. An additional conductive element of the capacitive structure is attached to the surface, and the additional conductive element is comprised of an additional elongated member. The system includes an electrode coupled to the conductive element that applies a voltage to the conductive element when a capacitance is being determined. The system further includes an additional electrode coupled to the additional conductive element that receives an amplitude to determine a change in capacitance caused by a shape alteration of at least one of the conductive element, the additional conductive element, and a space between the conductive element and the additional conductive element.

US Patent:

50560190, Oct 8, 1991

Filed:

Aug 29, 1989

Appl. No.:

7/400650

Inventors:

John Schultz - Stamford CT
Donald Irion - Westport CT

Assignee:

Citicorp POS Information Servies, Inc. - Stamford CT

International Classification:

G06F 1521

US Classification:

364405

Abstract:

A marketing method for providing manufacturer purchase reward offers by automatically tracking the purchases of member consumers through the use of bar-coded membership cards and using the purchase records in a data processing system to determine if the required purchases have been made to earn a reward. Each member consumer receives a reward booklet disclosing the available reward offers, a periodic status report indicating the member consumer's progress toward earning rewards, and a reward certificate for those rewards earned.

US Patent:

50032380, Mar 26, 1991

Filed:

Mar 2, 1990

Appl. No.:

7/487524

Inventors:

John J. Lum - San Francisco CA
John L. Schultz - Santa Clara CA

Assignee:

Diasonics, Inc. - Milpitas CA

International Classification:

G05B 1118

US Classification:

318592

Abstract:

As disclosed herein, a new and improved method and apparatus provide for fine tuning the position of a servomotor used to drive a transducer mounted on an ultrasound probe to a desired position. This improvement is accomplished by processing the analog quadrature output signals of an incremental optical encoder, coupled to the servomotor. The improvement uses the positional information derived from the analog quadrature output signals. The analog quadrature output signals, defined as sine and cosine, are converted to digital square waves. The digital square waves are decoded to produce digital position quadrants, wherein each quadrant represents a specific motor position. The corresponding digital square waves are also decoded by a logic array device and coupled to the select input of an analog switch. The analog quadrature output signals are also coupled to an analog device that converts the output signals to four phase shifted sinusoidal wave forms, having a linear portion within a digital position quadrant. The select signals from the logic array device select one of the four phase shifted wave forms.

US Patent:

50105558, Apr 23, 1991

Filed:

Jul 25, 1990

Appl. No.:

7/560461

Inventors:

John M. J. Madey - Palo Alto CA
Stephen V. Benson - Mountain View CA
John F. Schultz - Eau Claire WI
Antonello Cutolo - Naples, IT

International Classification:

H01S 300

US Classification:

372 2

Abstract:

The performance of free electron lasers can be greatly enhanced by including a non-linear optical element within the resonator for the oscillator. A system is described to enhance the peak or average power output of the FEL oscillator, or to modify the time structure of the oscillator output through the use of a non-linear element which modulates or diverts a portion of the optical wave circulating in the resonator.

US Patent:

20170210063, Jul 27, 2017

Filed:

Aug 3, 2015

Appl. No.:

15/500550

Inventors:

- St. Paul MN, US
William J. BRYAN - San Rafael CA, US
John C. SCHULTZ - Afton MN, US
Michael R. KESTI - Minneapolis MN, US
Richard C. ALLEN - Lilydale MN, US

Assignee:

3M INNOVATIVE PROPERTIES COMPANY - St. Paul MN

International Classification:

B29C 65/00
B33Y 40/00
B29C 63/02
B29C 67/00
B29C 65/48
B29C 37/00

Abstract:

Finishing system for a 3D printed object involves applying a film to an outer surface of the object in order to hide surface artifacts associated with the 3D printing process that created the object.