Abstract: A light responsive, battery operated fragrance device is described. The device establishes an air stream over a fragrant material when an artificial light source such as a room lamp is energized. It includes a swivel light gathering body and a photo transistor mounted thereto which can be aimed at the artificial light source and provides directional discrimination and screening of other light sources. The unactuated device provides a limited flow of convection air current which maintains a relatively low level of fragrance dispersion in a room therefor. Upon actuation forced air flowing through the device causes a rapid increase in the level of fragrance dispersion in the room.

Abstract: An improved buoyant alarm device which provides an indication of a disturbance to a quiescent level of a body of water. The device includes a cover assembly and a buoyant body. The cover assembly includes a cover member and a support member. The support member provides a subassembly support for electrical components which are mounted thereto and for forming, with the cover member, an enclosed water-tight chamber for housing the electrical components.

Abstract: An improved circuit arrangement is described which is used with a buoyant device for indicating a disturbance to the quiescent level of a body of water. The circuit arrangement includes an encoder and transmitter which are supported by the device and which are adapted for transmitting encoded information in accordance with a predetermined pulse code to a remote receiver and alarm. Transmission of the encoded signal is terminated after a predetermined interval of time. The encoder and transmitter are coupled in the circuit for enhancing the turn off of a bi-stable switching circuit.