Patent ID: 7540176

Claim:
A programmable electronic lock comprising a case; a knob guide having one end fixed inside the case and another end extend outside the case; an antenna carried at the other end of the knob guide; a coaxial spring mounted on the knob guide; a knob mounted on the knob guide and moving up and down under the action of the spring, the knob having one end positioned in the case and another end at the other end of the knob guide; a knob block permanently joined to the one end of the knob, the knob block having lateral guide slots and an upper surface; a tongue block positioned in the case, the tongue block having pins that slide in the lateral guide slots such that up and down movement of the knob cause lateral movement of the tongue block; an electronic board with a microcontroller positioned in the case for controlling the opening and closing of the lock, the electronic board with the microcontroller communicating with the antenna; a bi-stable solenoid operated by the microcontroller, the solenoid having a shaft, and in an activated state, one end of the shaft is positioned on the upper surface of the knob block for impending upward movement of the knob and another end of the shaft presses a hold down element of a contact which indicates to the microcontroller the correct operation of the lock in accordance with programmed logic.