DALE HADDON WOLIN
Pilots at Holly Mtn Dr, Pearl, ID

4567474, Jan 28, 1986

Jun 6, 1983

6/501757

Dale Wolin - Eagle ID

Temco Products Corporation - Boise ID

G08B 2100

340584

A device simply and effectively senses undesirably high temperatures in a refrigerated volume with an accuracy of about 3 percent, and activates an indicator in response to the sensing. A temperature probe is disposed in a freezer, refrigerator, or cooler volume, the probe including a negative temperature coefficient thermistor forming part of a voltage measurement bridge. The resistors of the voltage measurement bridge are all accurate to one percent, and are connected up to a voltage comparator of an integrated circuit. A 9 volt battery powers the device. The device also includes a low battery voltage sensor for activating the indicator when the battery voltage drops below about 8. 2 volts, and a sensor for detecting when the probe is damaged or disconnected. The probe detection circuit includes a Darlington transistor, and resistor, the Darlington transistor being connected through a diode to the indicator.

7020803, Mar 28, 2006

Mar 11, 2002

10/097054

Dale Haddon Wolin - Eagle ID, US
Barry J Oldfield - Boise ID, US
Robert A. Rust - Boise ID, US

Hewlett-Packard Development Company, LP. - Houston TX

G06F 11/00

714 41, 714 25

The system and methods described herein relate to testing and verifying the fault tolerance in fault tolerant systems. Fault logic integrated into a fault tolerant system permits automated testing of fault paths in system firmware and hardware dedicated to handling fault scenarios. Advantages of the disclosed system and methods include the ability to inject errors without the need to modify system firmware or hardware. Errors can be injected in a controlled manner and asynchronously to normal system firmware execution which permits improved coverage of firmware error paths. The automated error injection capability disclosed is applicable in both the development and production of fault tolerant systems.