Abstract: A hanging device includes a wall fixing plate, a wall hanging element, and a spiral spring. The wall fixing plate includes a fixing portion, an abutting portion, and a first fitting portion. The wall hanging element includes a housing and a fixing member. The housing has a back surface, and the back surface has a second fitting portion and a spring installation region. The spiral spring is disposed in the spring installation region and includes an inner arc section, an outer arc section, and an arc connecting section.

Abstract: A musical bar for a musical instrument includes a striking surface and a back surface which is a back side of the musical bar from the striking surface. When the striking surface is struck, the musical bar is vibrated to produce a musical tone with a unique pitch as a pitch of a fundamental tone. A recess is formed in the musical bar so as to be recessed from the back surface toward the striking surface. A position of a node of vibration of the fundamental tone for the musical bar is substantially aligned with an imaginary center of gravity of the recess in a longitudinal direction of the musical bar.

Abstract: A doorbell chime (100) can comprise a chassis (101), a cover (104) having a mechanical-cover identifier (105, 106), a mechanical-cover identifier detector (103) (to detect when the cover is at least substantially disposed in the installed position), and a chime (102) mounted in the chassis. This chime is configured to operate in a first mode of operation (302) when the mechanical-cover identifier detector detects the cover and in a second mode of operation (303) (that is different than the first mode of operation) when the mechanical-cover identifier detector does not detect the cover.

Abstract: A machine for automated generation of movement of chimes with a base, an power source in the base electromagnetically connected to a post, chimes disposed about the post for receiving electromagnetic energy, a control circuit for generating intermittent electric power to said source for creating magnetic forces on said chimes. The chimes may also be moved by electric power, water movement, wind generated by the power source or ionic wind movement.

Abstract: A remote chime unit and signal extender assembly are connectable to the circuitry of a primary doorbell system allowing the remote chime to be activated simultaneously with the primary doorbell chime from a stored voltage source.

Abstract: A programmable electronic circuit is disclosed. The circuit includes a CPU, signal-generating circuitry, and RC circuitry having at least two capacitors, such that when both of the capacitors are switched into the RC circuitry by the CPU, a signal is produced from an output of the signal-generating circuitry that is longer in duration than when one of the capacitors is switched into the RC circuitry.

Abstract: A driveway security sensor having a ground-engaging member connected to a housing body. The ground-engaging member substantively has the shape of a slake. A swivel member is pivotally connected to the housing body, and a motion sensor is connected to the swivel member.

Abstract: The present invention offers an adjustable, versatile windless windchime activation device, which can be modified to accept and activate many different varieties of windchime assemblies. The magnetic repulsive force between an electromagnet located within the windchime activation device and a permanent magnet positioned on a sail, which sail attaches to the sound inducing member of a windchime assembly, activates the windchimes in the absence of wind.

Abstract: A machine for automated generation of movement of chimes with a base, an power source in the base electromagnetically connected to a post, chimes disposed about the post for receiving electromagnetic energy, a control circuit for generating intermittent electric power to said source for creating magnetic forces on said chimes. The chimes may also be moved by electric power, water movement, wind generated by the power source or ionic wind movement.