LEO P DONOVAN
Engineering in Walpole, MA
License number
Massachusetts 39780
Issued Date
Apr 7, 1997
Expiration Date
Jun 30, 2014
Type
Mechanical Engineer
Address
Address
Walpole, MA 02081
Professional information
Anti-Theft Ski Alarm
US Patent:
4855720, Aug 8, 1989
Filed:
May 20, 1988
Appl. No.:
7/196476
Inventors:
Leo P. Donovan - Walpole MA
International Classification:
G08B 1314, H01H 4700
US Classification:
340571
Abstract:
An anti-theft ski alarm has a generally rectangular housing having a flat bottom surface provided with a slot. A peg having an enlarged head portion adapted to be received within the slot is secured to the upper surface of a ski to be protected. The enlarged head of the peg is inserted into the slot and an arming switch of the device is actuated, which causes a latch to block removal of the peg from the slot. A spring biased solenoid rod operates to block opening of the latch unless a code is correctly entered on a keypad. When the correct code is entered, a relay energizes the solenoid to retract the solenoid rod allowing the latch to be moved to an open position. An audible alarm within the device is actuated by a vibration switch which detects movement of the skis. The keypad includes a plurality of "dummy" keys to prevent breaking of the code sequence.