Abstract: A cooktop ventilation appliance or system for providing ventilation for a domestic cooking appliance, includes a housing configured to communicate with a ventilation device to convey air from an environment around the domestic cooking appliance into the housing, and a smoke detection and alarm system including at least one sensor configured to detect a density of particles in the air conveyed by the ventilation device, and a control unit in communication with the at least one sensor. The control unit is configured to compare the density of particles detected by the at least one sensor to a predetermined threshold particle density at a given air speed of the air being conveyed and activate an alarm if the density of particles detected by the at least one sensor exceeds the predetermined threshold particle density for the given air speed.

Abstract: A valve closure for a dispenser comprises a rigid body portion and a flexible diaphragm that engages the body portion when the valve closure is mounted in the dispenser. The valve closure may include a combination central boss/pin and dispensing orifice that, through a self-closing and self-sealing action, cuts off material flow following dispensation. Such configuration of a central boss/pin may also tend to prevent or at least reduce orifice re-healing by holding open the orifice during periods of non-use when the orifice is cut-off to material flow. For example, the central boss/pin may include an undercut region with which an annular lip of the orifice may engage to seal the orifice. The valve closure may further include a secondary channel, in addition but separate to a primary fluid flow channel, which may be used to provide external air venting that is completely or substantially de-coupled from fluid dispensation.

Abstract: The application relates to a composition comprising from about 10% (w/w) to about 40% (w/w) pregelatinized waxy potato starch, pregelatinized waxy cassava starch, or any mixture thereof; from about 10% (w/w) to about 20% (w/w) gum; and from about 40% (w/w) to about 70% (w/w) dispersant.