Ulf Stefan Berglund, Bjorn Henry Lundberg: Comfort control system incorporating weather forecast data and a method for operating such a system. Honeywell, Robert B Leonard, August 8, 2000: US06098893 (221 worldwide citation)

In a comfort controls system for multiple buildings (whether residential, commercial or industrial), a weather forecast unit sends weather forecast data over the Internet to a building management provider which handles building management services for a number of clients, each having a number of bui ...

James W Ratz, Robert J Schnell, Daniel T Uhrich: Electronic time thermostat with a temporary next period adjustment means. Honeywell, Robert B Leonard, July 27, 1993: US05230482 (144 worldwide citation)

A thermostat having a temporary "now" and "next" functions. The temporary "next" function allows the user to program a temporary deviation from a preprogrammed schedule used to control the temperature within a space. The combination temporary "now" and "next" function allows a user to temporarily se ...

James H Krueger, Jeffrey R Meyer, T Michael Tinsley: Temperature control with stored multiple configuration programs. Honeywell, Kris T Fredrick, Robert B Leonard, September 14, 1999: US05950709 (133 worldwide citation)

A thermostat which is configurable to be used with conventional fossil fuel furnaces, electric furnaces, heat pumps and other air conditioning equipment and fans. A setup program is included which requires an installer to enter data specific to the type of HVAC plant installed in the building with t ...

John T Adams: Thermostat control. Honeywell, Robert B Leonard, May 18, 1993: US05211332 (123 worldwide citation)

A process of operating an electronic thermostat so that it models the effects of a mechanical thermostat anticipator.

Kurt L Elliason, Robert J Schnell, Philip J Bohrer, Gregory J Merten: Real time and/shed load based on received tier pricing and direct load control with processors for each load. Robert B Leonard, July 1, 1997: US05644173 (120 worldwide citation)

A method of employing add/shed routines to individual load controllers in a system for a building or plant that has more than one load. It allows for cooperative adjustments of energy usage in accord with prearranged exigency information agree between the utility provider and the building user. Duty ...

Robert M Kay: Sinusoidal noise injection into the dither of a ring laser gyroscope. Honeywell, Robert B Leonard, Craig J Lervick, May 16, 1995: US05416584 (99 worldwide citation)

Method and apparatus for reducing the effects of lock-in in a ring laser gyroscope. A sinusoidal noise signal is generated having a peak amplitude which shifts as a function of a dither drive monitor signal to new, random, peak amplitude levels. In the preferred embodiment, the peak amplitude level ...

Douglas D Bird, Daniel T Uhrich: Thermostat with means for disabling PID control. Honeywell, Robert B Leonard, February 12, 1991: US04991770 (97 worldwide citation)

A thermostat is disclosed which includes a Proportional-Integral-Derivative (PID) controller and a means for disabling the PID controller for selected periods. The PID controller is disabled during a temperature recovery period, which can be triggered by the occurrence of one or more of many presele ...

Jeffrey R Meyer, Daniel Thomas Uhrich deceased: Flexible thermostat controller that permits various control point profiles when controlling multistage HVAC equipment. Honeywell, Robert B Leonard, August 15, 2000: US06101824 (96 worldwide citation)

A thermostat for use with multistage Heating, Ventilating and Air Conditioning (HVAC) plants where a proportional/integral control loop is present for each stage of the multistage HVAC plant. Filter constants, Ki and Kp as well as stage control points and interstage values can be set independently f ...

John T Adams: Thermostat having simple battery level detection. Honeywell, Robert B Leonard, August 24, 1993: US05238184 (81 worldwide citation)

A thermostat having a simple battery level detection circuit. The output of an oscillator, having a frequency dependent upon the battery level, is compared to the output of a battery level independent time base. If the two outputs are not in a predetermined relationship, all connected HVAC equipment ...

Richard A Wruck, Gideon Shavit: Air handling system utilizing direct expansion cooling. Honeywell, Robert B Leonard, December 22, 1992: US05172565 (76 worldwide citation)

A system for controlling the operation of an HVAC system which includes a direct expansion coil, a condenser, a pre-cool coil, and a control system. The control system includes a controller and sensors. The controller receives signals indicative of air flow through the direct expansion coil from the ...