Keith K Platner

62153986, Apr 10, 2001

Dec 15, 1998

9/212738

Brian P. Platner - Guilford CT
Philip H. Mudge - Brookfield CT
William J. Fassbender - Watertown CT
Keith K. Platner - Northford CT

G08B 1318

340556

Occupancy sensors are presented that include a flat lens for focusing detecting beams into narrower, longer range beams than those of conventional curved lenses. A sensing circuit generates a detecting beam that is substantially perpendicular to the flat lens. The flat lens has a plurality of lens segments that provide long, intermediate, and short range sensing beams. To facilitate positioning of an occupancy sensor, the sensor includes a plurality of indicators that indicate the sensor's long and short range sensing limits. An override timer circuit is provided that upon activation sets the occupancy sensor in occupancy mode for a predetermined time period. A warm-up timer circuit is also provided that upon power-up automatically sets the occupancy sensor in occupancy mode for a predetermined warm-up period. These occupancy sensors are well-suited for environments with long aisles, high ceilings, and high intensity discharge lighting.

58641840, Jan 26, 1999

Mar 5, 1997

8/811591

Brian Page Platner - Guilford CT
Philip Howland Mudge - Brookfield CT
Keith Kendell Platner - Northford CT

H02J 314

307 31

Interface circuitry for facilitating the installation of a control device is presented. One embodiment includes an interface circuit with first and second terminals that can be coupled interchangeably to a load and the utility hot of an AC power source, thus eliminating the time-consuming requirement that a particular wire be coupled to a particular terminal. The interface circuit also limits the amount of current supplied to the control device during periods of low current demand, thus reducing current and power consumption. An additional feature further facilitates installation of a control device when that device is being installed in a metallic electrical enclosure that is itself coupled to utility return. The device's return terminal is automatically coupled to the power source's utility return upon mounting of the control device in the enclosure.