Kevin B Mcdonald, 685145 SW 19Th Dr, Portland, OR 97239

2002004, Apr 18, 2002

Oct 18, 2001

09/978629

Kevin McDonald - Portland OR, US

G01R031/00

324/508000

A visual indicator notifies an occupant of an unsafe wiring condition in an electrical outlet or switch. The visual indicator and the electrical conductors inside the outlet being thermally connected, but electrically separated. When a threshold temperature is reached which is outside the normal operating temperature of an electrical outlet, the visual indicator will change state to notify occupants of a wiring problem.

2007018, Aug 16, 2007

Jan 17, 2007

11/654070

Kevin McDonald - Brush Prairie WA, US

E05B 1/00

016110100

A removable handle assembly mounted on a pivotally attached enclosure member of a trash receptacle wherein the enclosure member rotates into and out of a covering or enclosing relationship relative to an opening through which garbage, debris, etc. is passed into the interior of the trash receptacle. The handle assembly comprises: (a) a connector that is attached to the enclosure member, the connector configured to receive (b) a removable outwardly and upwardly positioned contact member configured to engage the connector. The configuration and disposition of the handle assembly allows the user's hand or other body member to be positioned out of the way of direct contact with any trash, garbage, etc. being passed through the access opening into the interior of the trash bin as well as eliminating the need to touch the exterior surface of the closure member when positioning the closure member into an open position. The contact member may be removed by disengaging from the connector so that the contact member may be cleaned or replaced.

2009017, Jul 9, 2009

Jul 15, 2008

12/218623

Cristiano Bazzani - Irvine CA, US
Daniel Draper - Portland OR, US
Kevin B. McDonald - Portland OR, US

H01S 3/10

372 26

An optical signal generator is configured with an associated control system and driver configured to reduce speckle. Speckle reduction occurs by pulsing the drive signal between a first current level and a second current level. These pulses force the optical signal generator to introduce oscillations into the optical signal. The coherence of the emitted light is reduced during the period of oscillations in the optical signal, which reduces speckle. In one embodiment, the pulsing of the drive signal brings the drive signal down to a level near or below threshold, which in turn intermittently turns off the optical signal output. Returning the optical signal to a desired optical output intensity introduces the speckle reducing oscillation. The pulse frequency, and duty cycle is controlled by a duty cycle control signal to modulate overall optical power and adjust amount of despeckle.

6239736, May 29, 2001

Oct 29, 1999

9/430254

Kevin B. McDonald - Portland OR
Charles R. Barrows - Portland OR
Stephen K. Bigelow - Aloha OR
Steven J. McCoy - Clackamas OR

Interlogix, Inc. - Tualatin OR

G01S 1356

342 28

A motion detector combines an FCC approved homodyne pulsed range-gated radar ("RGR") detector (10) and a PIR detector (158). Narrow microwave pulses are transmitted at a predetermined pulse repetition frequency ("PRF") and the pulses are reflected by a target. The RGR detector senses the presence of moving human sized objects within predetermined ranges. Moving objects beyond the ranges are not sensed. The RGR detector employs a pulsed microwave oscillator (12) that is triggered by a system clock (14) and immediately retriggered after a 3 to 100 nanosecond delay (20). The duration of each pulse is 3 to 20 nanoseconds with a half-sine envelope shape. The RGR employs a homodyne detector (36) and shares an antenna (38) with the transmitter. The receiver range is determined by the delay imposed between the transmitted pulses, the first being a transmitted pulse and the second being a local oscillator pulse. Each received 5.

5142284, Aug 25, 1992

Dec 23, 1991

7/814303

William A. Trent - Bend OR
Kevin B. McDonald - Bend OR
Florian G. Bell - Bend OR
Richard I. Lane - Bend OR
Glenn Bateman - Redmound OR
Michael S. Overton - Beaverton OR

Tektronix, Inc. - Wilsonville OR

H03M 100
H03K 5159

341122

An input signal is sampled by alternately coupling the input signal and a reference level to a sample storage element, whereby the magnitude of the signal stored by the storage element immediately following application of the input signal to the storage element is a function of the input signal magnitude and the magnitude of the signal stored by the storage element immediately preceding coupling of the input signal to the storage element is a function of the reference level.

5185635, Feb 9, 1993

Jul 29, 1991

7/737112

William A. Trent - Bend OR
Kevin B. McDonald - Bend OR
Florian G. Bell - Bend OR

Tektronix, Inc. - Wilsonville OR

G01N 2188
H01S 313

356 731

An input signal is sampled by alternately coupling the input signal and a reference level to a sample storage element, whereby the magnitude of the signal stored by the storage element immediately following application of the input signal to the storage element is a function of the input signal magnitude and the magnitude of the signal stored by the storage element immediately preceding coupling of the input signal to the storage element is a function of the reference level.

5534849, Jul 9, 1996

Dec 6, 1994

8/351566

Kevin B. McDonald - Portland OR
Stephen W. Pierce - Tigard OR
Michael Benowitz - Lake Oswego OR
David S. Terrett - Beaverton OR

Sentrol, Inc. - Tualatin OR

G08B 1308

340517

A magnetically actuated switch system (10) has reduced sensitivity to false alarms and reduced power consumption and resistance to physical and magnetic tampering. The system includes a signal processing circuit controlled by a microprocessor (16) that selectively enables magnetic sensors (12, 38), and compares the corresponding sensor outputs (76) to automatically calibrated level and predetermined timing characteristics.

5043608, Aug 27, 1991

Aug 24, 1989

7/397829

Kevin B. McDonald - Bend OR

Tektronix, Inc. - Beaverton OR

G01N 2101
G06G 712

307491

An avalanche photodiode non-linearity correction circuit cancels a portion of a non-linear recovery error response by the APD to an input signal by using the fact that the non-linear recovery error is only mildly dependent upon the APD gain. The gain of the APD is varied from data acquisition cycle to data acquisition cycle, with the acquired data being stored. The stored data from consecutive data acquisition cycles are combined in a summation circuit to effectively cancel a significant portion of the non-linear recovery error response.