Michael A Stern

US Patent:

6495983, Dec 17, 2002

Filed:

Jun 28, 2001

Appl. No.:

09/892642

Inventors:

Michael A. Stern - San Fernando CA 91340

International Classification:

G05B 1910

US Classification:

318567

Abstract:

An integrated, closed-loop programmable motor assembly ( ) consisting of a bi-directional motor ( ), a motor-shaft encoder ( ), a rotation decoder ( ), a microcontroller ( ) and a motor drive circuit ( ). In a typical application, the electric motor ( ) is first programmed by placing the assembly ( ) in a record mode and then rotating the motor shaft ( ) to describe a desired motion. The motor shaft ( ) can be made to rotate any amount, in any direction, and for any period of time. During the record mode, digital data corresponding to the motor shaft rotation is read from the motor shaft encoder ( ) to the rotation decoder ( ) and is subsequently stored in the memory circuit of the microcontroller ( ). This data is recorded time synchronous, based on the time pulse produced by a time pulse generator ( ). When the assembly ( ) is placed in the playback mode, the stored position data is synchronously read by the microcontroller ( ) via the rotation decoder ( ), and the motor ( ) rotates to reproduce the rotational data manually inserted during the record mode.

US Patent:

D483161, Dec 2, 2003

Filed:

Sep 23, 2002

Appl. No.:

29/167804

Inventors:

Michael Alan Stern - San Fernando CA 91340

International Classification:

1505

US Classification:

D32 25

US Patent:

8344548, Jan 1, 2013

Filed:

Mar 14, 2010

Appl. No.:

12/723670

Inventors:

Michael Joseph Stern - Westlake Village CA, US

Assignee:

Renewable Power Conversion, Inc. - San Luis Obispo CA

International Classification:

H02J 1/00
H02J 3/00

US Classification:

307 77

Abstract:

A photovoltaic power plant design is disclosed where a two-tier DC power collection method is used in concert with specific array field geometries and equipment locations to minimize system wiring costs and/or resistive wiring losses.

US Patent:

8648497, Feb 11, 2014

Filed:

Jan 28, 2010

Appl. No.:

12/656378

Inventors:

Michael Joseph Stern - Westlake Village CA, US

Assignee:

Renewable Power Conversion, Inc. - San Luis Obispo CA

International Classification:

H02J 1/00
G05F 1/00

US Classification:

307 82, 323222, 323272

Abstract:

A solar photovoltaic plant is disclosed where a number of distributed DC-to-DC converters are used in conjunction with a central DC-to-AC converter. Each DC-to-DC converter is dedicated to a portion of the photovoltaic array and tracks the maximum power point voltage thereof. The DC-to-DC converters also boost the photovoltaic voltage and regulate a DC output current for transmission to the central DC-to-AC converter. Five distinct advantages are had over the prior art. First, efficiencies in intra-field power collection are greatly improved by transferring power at higher DC voltages. Second, the number of independent photovoltaic maximum power point trackers in the power plant can be increased, in a cost effective manner, to optimize the overall photovoltaic array energy harvest. Third, each DC-to-DC converter output “looks” like a current source at the input of the DC-to-AC converter and therefore can be easily paralleled. Fourth, the current source nature of the DC-to-DC converter outputs enables the DC-to-AC converter to operate with a minimum, fixed DC bus voltage to provide maximum DC-to-AC power conversion efficiencies.

US Patent:

20070223721, Sep 27, 2007

Filed:

Mar 6, 2007

Appl. No.:

11/682844

Inventors:

Michael J. Stern - Thousand Oaks CA, US
Jack Goldberg - San Diego CA, US

International Classification:

H04R 1/10
H04R 25/00

US Classification:

381 74, 381384

Abstract:

A self-testing programmable listening system includes a programmable listening device and a programming module, which may be located within the listening device or in an external module configured to communicate with the listening device via a suitable wireless or wired communication link. When the listening device is in programming mode, the programming module delivers test prompts to the user through the listening device and programs the signal processing characteristics of the device based on the user's responses to the test prompts.

US Patent:

20080207495, Aug 28, 2008

Filed:

Feb 22, 2008

Appl. No.:

12/035698

Inventors:

Richard S. Graham - Irvine CA, US
Walter L. Tien - Irvine CA, US
Mayssa Attar - Placentia CA, US
Rhett Schiffman - Laguna Beach CA, US
Michael E. Stern - Mission Viejo CA, US
Robin Sears - Laguna Niguel CA, US
John G. Walt - Huntington Beach CA, US
Tamara Cassaro - San Clemente CA, US

International Classification:

A61K 38/13
A61P 27/02

US Classification:

514 11

Abstract:

Disclosed herein are methods of treating ocular rosacea with cyclosporin A. Compositions and medicaments related thereto are also disclosed.

US Patent:

20100226159, Sep 9, 2010

Filed:

Mar 1, 2010

Appl. No.:

12/715372

Inventors:

Michael Joseph Stern - Westlake Village CA, US

International Classification:

H02M 7/5387

US Classification:

363132

Abstract:

A DC-to-AC power converter is disclosed which provides current regulated three-phase AC outputs and very high conversion efficiencies. The converter sinks power from an external DC current source and steers that current directly into two phases of a three-phase load by using complementary semiconductor switches in disparate half-bridges of a six-pole bridge. The steering switch selection rotates every 60 to direct current into the two phases with the largest voltage differential at any given time. The remaining half-bridge acts as a high-frequency, bi-directional current source to balance the three-phase load currents. This topology and control method significantly reduces power conversion losses. The converter may also include an additional power processing stage that is used to convert an external DC voltage source to a DC current source before the three-phase conversion takes place. Prior art converters first convert “soft” DC sources to voltage sources and then to AC current sources. The invention eliminates the need for large PWM filter inductors and DC bus capacitors used in prior art converters. In addition, 90% of the power being converted is directly processed by steering current into the AC three-phase load without high frequency chopping or switching. The invention is optimized for photovoltaic, utility-grid-interactive applications.

US Patent:

44500343, May 22, 1984

Filed:

Jun 10, 1982

Appl. No.:

6/387100

Inventors:

Michael J. Stern - Chatsworth CA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

B30B 1534

US Classification:

156382

Abstract:

Apparatus for use in the fabrication of laminated products. A laminator includes lower and upper units, the lower unit adapted to receive a workpiece within a recessed interior cavity and the upper portion providing a hood thereover. An elastomeric membrane, which serves as a diaphragm for transmitting forces, is adhesively secured at the periphery of the upper unit. A peripheral rib structure associated with the lower unit is provided to assure air tight sealing of the vacuum chamber wherein lamination takes place. Ports in the upper and lower members are adapted to accept the outputs of air evacuation apparatus for controllably actuating the membrane to apply a compressive force over the surface of the workpiece during the lamination process.