Abstract: A protective trim system is provided which protects the surface of an underlying solid body. The system includes an elongated trim member which is attached to a surface and is movable away from the surface to protect the underlying body.

Abstract: A personal security alarm including a loud speaker powered by an audio frequency signal generator to produce a siren effect and a high intensity flashlamp, both of which are activated upon operation of a remote switch and can be deactivated only by a key switch on the alarm. A generally conical transparent plastic extension from the center of the loud speaker horn encloses the flashlamp and also disperses the sound. Preferably the high voltage power for the flashlamp is derived from a transformer supplied with the audio frequency signal provided to the loud speaker.

Abstract: A sound barrier and sound-absorption panel preferably of a transparent nature so as not to interfere with vision of and light for the machine or other noise-emitting device, to be shielded or enclosed by one or more of the panels. The panel is formed of transparent sound-reflecting material and sound-absorbing material so arranged relatively that the sound waves are received by the panel and deflected into the sound-absorbing material. The reflecting material and sound-absorbing material are arranged to provide one or more sound-receiving pockets or cavities each of which has an outwardly-diverging sound-reflecting wall surface which faces toward the sound-emitter. The sound-absorbing material is in the form of an outwardly-extending member so located in the pocket or cavity as to absorb sound waves which are received in the pocket or cavity and are deflected into the sound-absorbing member by the sound-reflecting wall surface.