Timothy M Minteer

7034604, Apr 25, 2006

Mar 17, 2003

10/391373

Timothy M. Minteer - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

G05F 3/08
H02M 7/00

327540, 327531, 363126

A communications device, such as a transceiver, is used with a fiber optic communication line, wherein the communications device is powered from a host device. A voltage supply circuit, which comprises a full wave bridge rectifier responsive to data and control signals from the host device, produces plus and minus rectified voltage signals. First and second voltage regulators are responsive to the rectified voltage signals to produce plus and minus regulated voltages, for example 5 volts, which is sufficient to power the communications device. A charge circuit alternately transfers energy from the plus and minus voltage lines to ensure the presence of plus and minus voltage signals when only positive or negative signals are provided by the host device.

7557655, Jul 7, 2009

Nov 5, 2007

11/935204

Timothy M. Minteer - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H03F 1/00

330195, 330188

An accurate linear equivalent of an analog signal may be produced across an isolation barrier by driving a primary transformer winding with a drive amplifier and compensation amplifier, where the compensation operational amplifier amplifies a difference between a signal produced on a sense winding of the transformer and a combination of the input analog signal and output of the drive amplifier. The system may be stabilized by a lead-lag network between the sense winding, input signal, and operational amplifier. The transformer may comprise an isolation barrier to isolate the input analog signal from a signal winding. The primary winding of the transformer, driven by the operational amplifier and driver amplifier circuit, may produce a linear equivalent of the input analog signal across the isolation barrier on a signal winding of the transformer. The transformer may comprise power supply windings connected to a power supply bridge rectifier and regulator circuit to control and supply power to the circuit components across the isolation barrier. The operational amplifier and drive amplifier circuit may be active for only a portion of each analog signal sampling period.

7889041, Feb 15, 2011

Nov 5, 2007

11/935166

Timothy M. Minteer - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H01F 5/00

336200

A transformer to isolate a primary winding from a signal winding include a primary substrate (which may comprise a printed circuit board (PCB)) and a secondary substrate. The primary and secondary substrates may each have three openings to allow first and second E-E core halves to be joined therebetween. A first insulator may be disposed between the primary and secondary substrates to isolate the primary substrate from the secondary substrate. A second insulator may secure the primary and secondary substrates in place and insulate the secondary substrate from the core. The primary and secondary substrates may each include a Faraday shield its outer layers. A shield slit to prevent shorting between the legs of the E-E core may be formed by cutting a channel in the shield between the opening of the primary and secondary substrates. A retaining clip may be used to clamp together the primary substrate, first and second core E-E core halves, secondary substrate and second insulator. A primary winding and sense winding may be disposed within the primary substrate and a signal winding may be disposed within the secondary substrate.

7979977, Jul 19, 2011

Dec 22, 2010

12/976733

Timothy M. Minteer - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H01F 7/06

296021, 336200

A transformer to isolate a primary winding from a signal winding include a primary substrate (which may comprise a printed circuit board (PCB)) and a secondary substrate. The primary and secondary substrates may each have three openings to allow first and second E-E core halves to be joined therebetween. A first insulator may be disposed between the primary and secondary substrates to isolate the primary substrate from the secondary substrate. A second insulator may secure the primary and secondary substrates in place and insulate the secondary substrate from the core. The primary and secondary substrates may each include a Faraday shield its outer layers. A shield slit to prevent shorting between the legs of the E-E core may be formed by cutting a channel in the shield between the opening of the primary and secondary substrates. A retaining clip may be used to clamp together the primary substrate, first and second core E-E core halves, secondary substrate and second insulator. A primary winding and sense winding may be disposed within the primary substrate and a signal winding may be disposed within the secondary substrate.

8155326, Apr 10, 2012

Oct 8, 2008

12/247736

David E. Whitehead - Pullman WA, US
Timothy M. Minteer - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H04R 29/00

381 56, 381 57, 381 58, 381 59, 381 77, 381 80, 381 81, 381 711, 381 941

A system for monitoring the operation of one or more devices is provided. The system includes a microphone acoustically coupled to one the monitored device. An analog-to-digital-converter samples the microphone and a processor examines the resultant digital signal for the occurrence of an abnormal event.

20050094338, May 5, 2005

Oct 29, 2003

10/697904

Timothy Minteer - Pullman WA, US
Eric Horn - Pullman WA, US

H02H003/00

361071000

The recloser control apparatus is compatible with reclosers from various recloser manufacturers. The recloser control apparatus includes a protective relay for power lines which is responsive to voltage and current values from the power line to identify faults on the line, and operates in combination with a recloser apparatus to restore power to areas of the power system which are unaffected by a fault but which have initially been put out-of-service in response to the fault. The apparatus includes a control interface capable of being selectively modified to provide control signals for a plurality of different reclosers having different control signal requirements for operation of their trip and close control circuits.

20060001497, Jan 5, 2006

Jul 1, 2004

10/883149

Timothy Minteer - Pullman WA, US

H01H 75/00

331139000

A circuit for a recloser controls the flow of current through an actuator coil to selectively open or close the electrical contacts of the recloser. The circuit utilizes pairs of transistors and pairs of diodes to apply the charge on a capacitor to open or close the contacts and to recharge the capacitor when the contacts open or close. The potential on the capacitor opposes current flow through the actuator coil for rapid decay of the actuator coil current, which also enables a rapid opening of the contacts after closure into a high current fault or the like. The capacitor also protects the transistors from voltage transients. Related methods are also presented.

59057580, May 18, 1999

Apr 24, 1996

8/637351

Edmund O. Schweiter - Pullman WA
Timothy M. Minteer - Pullman WA

Schweitzer Engineering Laboratories - Pullman WA

H04B3/00

375257

The fiber-optic transceiver system combines EIA-232 data with IRIG-B time code information in a time multiplexing arrangement. The combined signal is transmitted to a receiver where the time code information is decombined from the data so that the two signals are replicas of their originals. The time multiplexing is accomplished by inserting a pulse into the data stream following the occurrence of a minimum time for each data bit and the coincidence of a time code pulse.