Patent ID: 6094131
Filing Date: 2000-07-25
Classification: B60R

Abstract:
A keyless lock device for a car, said car having a centralized locking control unit for locking and unlocking the door thereof and a detection switch installed in a door handle thereof, said keyless lock device comprising:a master control unit installed in a car, said mater control circuit having a processing unit, a transmitting means connected to said processing unit and a receiving means connected to said processing unit, said processing unit being connected to said centralized locking control unit for locking and unlocking the door, and said detection switch for detecting that said door handle is pulled, said transmitting means transmitting an acknowledgment signal when said detection switch is triggered by pulling said door handle; anda remote control having a receiving and amplifying circuit for receiving and amplifying said acknowledgement signal, an encoder for encoding said acknowledgement signal to generate a re-acknowledgement signal with a specific encrypted code, a high frequency amplifying circuit for amplifying said re-acknowledgement signal and an antenna for transmitting said amplified re-acknowledge signal, wherein said transmitted re-acknowledge signal is received by the receiving means of said mater control unit for being recognized said master control unit then unlocking said door of said car whereby said keyless lock device can eliminate the necessity of pressing a push-bottom switch to open said door.