ANTHONY P CLEMENTE
Plumbers in Malden, MA
License number
Massachusetts 3222
Issued Date
Jan 13, 1999
Expiration Date
May 1, 2000
Type
Limited LP Installer
Address
Address
Malden, MA 02148
Personal information
See more information about ANTHONY P CLEMENTE at radaris.comName
Address
Phone
100 State Rd, Phillipston, MA 01331
27 Latham Ln, Reading, MA 01867
52 Locust St #3, Winthrop, MA 02152
52 Locust St, Winthrop, MA 02152
65 Trenton St, Worcester, MA 01604
Professional information
Signalling Apparatus
US Patent:
4538139, Aug 27, 1985
Filed:
Apr 30, 1982
Appl. No.:
6/373524
Inventors:
Anthony R. Clemente - Malden MA
Assignee:
Bolt Beranek and Newman Inc. - Cambridge MA
International Classification:
G08B 108
US Classification:
340539
Abstract:
Signalling apparatus in which a sensed change in condition, e. g. a window opened by an intruder or a valuable art object moved, causes the free end of a cantilevered spring to be snapped or twanged. A piezoelectric film bonded to the spring generates a pulsating voltage which energizes a transmitter, independently of any external power source. Remotely, a receiver which is selectively responsive to the transmitted pulsating signal generates an output signal indicating the change in condition, e. g. for initiating an alarm.