04881148 is referenced by 166 patents and cites 6 patents.

A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and means for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions. In this system the invention involves the improvement wherein the coding of the second code set into the transmitter is a unique group of binary bits and the receiver unit includes a field programming arrangement for setting the first code of the receiver unit to the unique group of binary bits in the transmitting unit by using the signal from the transmitting unit as received by the receiver unit. In accordance with this improvement, the first code of the receiver unit is set to the second code of the transmitting unit in the field and may be changed from one code to another code upon authorized use of a second transmitting unit having its own unique code.

Title
Remote control system for door locks
Application Number
52469
Publication Number
4881148
Application Date
October 19, 1988
Publication Date
November 14, 1989
Inventor
Robert A Hair
Pontiac
MI, US
Kenneth R Pitera
Warren
MI, US
George Lambropoulos
Grosse Pointe Woods
MI, US
Agent
Body Vickers & Daniels
Assignee
Wickes Manufacturing Company
MI, US
IPC
H01G 1/06
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