Abstract: A stop and dampening pillow are provided inside a bass drum with the dampening pillow engaging the batter head (player's side) but prevented from touching or engaging the resonant head (audience side) by the stop. The stop may be a single piece device, such as a wooden circular segment, or an adjustable device for multiple drum diameter sizes.

Abstract: Power management processes and circuits for battery-powered abandoned occupant or trapped occupant detectors are disclosed in which power to at least two families of sensors are controlled independently by a control process or circuit, wherein a first family of sensors is lower power consuming and suitable for periodic or continuous monitoring, and wherein at least a second family of sensors is higher power consuming and suitable for more certain determination of a dangerous condition currently existing or potentially existing soon. The second family is disabled from consuming power until at least one sensor of the first family detects at least an initial condition indicative of a possible dangerous condition.

Abstract: One or more noxious gas detectors disposed within a cabin of a vehicle are used by an analyzer to determine that a rate of increase of measured noxious gas exceeds a first threshold, or that a level of measured noxious exceeds a second threshold, or both; and to generate an alert output responsive to the determination. Optionally, the analyzer may take remediation actions by emitting or transmitting commands to the vehicle's control computer to stop or start the engine, start the air conditioning or heater, roll down windows, unlock doors, activate horns and lights, and even transmit alert messages to one or more recipients. In one embodiment, a window clip-on sign is provided with one or more sensors on an interior portion of the unit, and one or more alert means on an exterior portion to provide a portable and easy-to-use safety device.

Abstract: One or more noxious gas detectors disposed within a cabin of a vehicle are used by an analyzer to determine that a rate of increase of measured noxious gas exceeds a first threshold, or that a level of measured noxious exceeds a second threshold, or both; and to generate an alert output responsive to the determination. Optionally, the analyzer may take remediation actions by emitting or transmitting commands to the vehicle's control computer to stop or start the engine, start the air conditioning or heater, roll down windows, unlock doors, activate horns and lights, and even transmit alert messages to one or more recipients.

Abstract: One or more noxious gas detectors disposed within a cabin of a vehicle are used by an analyzer to determine that a rate of increase of measured noxious gas exceeds a first threshold, or that a level of measured noxious exceeds a second threshold, or both; and to generate an alert output responsive to the determination. Optionally, the analyzer may take remediation actions by emitting or transmitting commands to the vehicle's control computer to stop or start the engine, start the air conditioning or heater, roll down windows, unlock doors, activate horns and lights, and even transmit alert messages to one or more recipients. In one embodiment, a window clip-on sign is provided with one or more sensors on an interior portion of the unit, and one or more alert means on an exterior portion to provide a portable and easy-to-use safety device.

Abstract: One or more noxious gas detectors disposed within a cabin of a vehicle are used by an analyzer to determine that a rate of increase of measured noxious gas exceeds a first threshold, or that a level of measured noxious exceeds a second threshold, or both; and to generate an alert output responsive to the determination. Optionally, the analyzer may take remediation actions by emitting or transmitting commands to the vehicle's control computer to stop or start the engine, start the air conditioning or heater, roll down windows, unlock doors, activate horns and lights, and even transmit alert messages to one or more recipients.