Vehicle door opening apparatus

Claim 1

In combination with a hollow motor vehicle door having a pair of spaced walls and a door handle mounted on an exterior surface of one of said walls in the interior of said vehicle, apparatus for unlocking said door comprising: a sleeve extending through the other of said walls and having an opening on the exterior surface of said other of said walls; a cartridge mounted in said sleeve, including a contact plate having a conductive circuit mounted on a surface thereof, portions of said circuit being spaced by a series of depressions forming coded indicia, the front edge of said contact plate having a series of indentations; a base plate having a surface in contact with the conductive surface of said contact plate; and means for urging said base plate surface and contact plate surface towards each other; solenoid means mounted in said hollow vehicle door connected to said vehicle door handle within the interior of said vehicle; conductor means for connecting the spaced portions of said circuit mounted on said contact plate in series with said solenoid means and a source of electrical power; and substantially planar card means insertable through said sleeve between said contact plate and base plate for completing said electrical circuit on said contact plate to energize said solenoid means to rotate said door handle to unlock said vehicle door, said card means including raised, coded indicia having metallic conductive coating on the surface thereof exactly fitting said depression in said contact plate to complete said electrical circuit mounted thereon, the front edge of said card means having arrow indicia raised to a height that is small relative to the thickness of said card for registering with said indentations on said contact plate to thereby raise and separate said contact plate relative to said base plate against the bias of said urging means.