Abstract: A smoke detector includes a housing defining a dark chamber admitting test atmosphere. A light receiver is disposed within the chamber. A scatter emitter is positioned within the chamber such that light strikes the receiver when reflected off particles suspended in the test atmosphere. An obscuration emitter is positioned within the chamber such that light emitted is directed to the receiver unless obstructed by particles suspended in the test atmosphere. A smoke detect signal is generated responsive to a measurement made responsive to the scatter emitter and/or the obscuration emitter.

Abstract: A control system for a microwave oven having a magnetron unit, a microwave oven using such a control system and methods of making the same are provided, the system being adapted to interconnect a power source to a transformer unit of the magnetron unit to operate the same, the system comprising a unit for determining the actual voltage level of said power source to be utilized at that time and being adapted to interconnect the power source to a particular tap of the transformer unit if the determined power level is above a certain value and to interconnect the power source to another tap of the transformer unit if the determined power level is below the certain value.

Abstract: A control system for a microwave oven having a magnetron unit and method of making the same are provided, the system being adapted to interconnect a power source to the magnetron unit to operate the same, the system comprising a display control module, a power module, and an electrical circuit interconnecting the modules together, each module comprising a microprocessor.

Abstract: A method of using a work station having separate front and back tops having separate powered drive arrangements for permitting independent height adjustment. A controller, which is programmed by an operator, permits storage of a number of predetermined height locations each defining distinct heights for both tops. The operator effects programmed movement of the tops to predetermined height locations for predetermined times and in a predetermined sequence, with the rear top moving initially and the front top moving thereafter.

Abstract: A work station, particularly for supporting a computer, having separate front and back tops having separate powered drive arrangements for permitting independently height adjustment. The drive arrangement includes a separate drive motor associated with each top, with the motors being controlled by a controller, such as a microprocessor. The controller is preferably controlled by an operator using a portable keypad control which can be positioned on one of the tops. The controller can be programmed by the operator to permit storage of a number of predetermined height locations each defining distinct heights for both tops.

Abstract: A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever from the "Park" position when the ignition switch is in the "Start" or "Run" position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever from the "Park" position under other conditions when the ignition switch is in the "Start" or "Run" position. An ignition interlock system prevents movement of the shift lever from the "Park" position when the ignition switch is in the "Lock" position.

Abstract: A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever from the "Park" position when the ignition switch is in the "Start" or "Run" position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever from the "Park" position under other conditions when the ignition switch is in the "Start" or "Run" position. An ignition interlock system prevents movement of the shift lever from the "Park" position when the ignition switch is in the "Lock" position.

Abstract: A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever from the "Park" position when the ignition switch is in the "Start" or "Run" position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever from the "Park" position under other conditions when the ignition switch is in the "Start" or "Run" position. An ignition interlock system prevents movement of the shift lever from the "Park" position when the ignition switch is in the "Lock" position.