作者: John J. McMonagle , Kevin T. Vesely
DOI:
关键词: Acoustics 、 Actuator 、 Push-button 、 Engineering 、 Electrical engineering
摘要: A vandal-resistant push-button actuator which may be utilized in a vandal resistant, remotely programmable voice communications unit capable of being programmed for automatically calling predetermined telephone numbers. The employs push-button, mounting device having passageway therein slidably receiving the and first second axially spaced apart seals between passageway. absorb transverse blows to raised portion lubricant disposed prevent an adhesive inserted by from disabling actuator. inwardly escutcheon shaped form concave, ring-shaped surface therewith, thus inhibit damage inner hammer blow.