Abstract: An engine may include an engine body. A piston assembly may be positioned at least partially within the engine body and including a first piston and a second piston. A connection member may be operably coupling the first piston to the second piston and causing the first piston and the second piston to move in conjunction with one another. A sled may be operably coupled with the connection member. A load member may be operably coupled with sled, the load member movable with the sled. A sensor system may be positioned through at least a portion of the engine body and operably coupled with the sled. The sensor system may include a transmitter configured to direct modulated emitted light into a sled chamber and a receiver configured to receive reflected light from the light source.

Abstract: An electromagnetic interference (EMI) shield for gas cooktops is disclosed herein. The EMI shield protects electromagnetic fields output by a high voltage spark ignition system from interfering with sensitive low voltage controls for the cooktop. Accordingly, the low voltage controls and similar elements are mounted on one side of the EMI shield and the high voltage spark ignition system, burners, and similar elements are mounted on another side of the EMI shield. In order to connect elements on each side of the EMI shield as may be necessary (e.g., electrical wires and gas tubing), the EMI shield can have a plurality of small openings. The EMI shield may also provide a mount for controls and/or a user interface for displaying information and controlling the cooktop.

Abstract: An electromagnetic interference (EMI) shield for gas cooktops is disclosed herein. The EMI shield protects electromagnetic fields output by a high voltage spark ignition system from interfering with sensitive low voltage controls for the cooktop. Accordingly, the low voltage controls and similar elements are mounted on one side of the EMI shield and the high voltage spark ignition system, burners, and similar elements are mounted on another side of the EMI shield. In order to connect elements on each side of the EMI shield as may be necessary (e.g., electrical wires and gas tubing), the EMI shield can have a plurality of small openings. The EMI shield may also provide a mount for controls and/or a user interface for displaying information and controlling the cooktop.