Connector plug for vehicle electrical tester
First Claim
1. A connector plug for connecting a test apparatus used for testing a vehicle electrical system to the socket of a cigar lighter of a vehicle, said connector plug comprising:
- a first contact adapted for connecting a signal processing component to the vehicle, said first contact being adapted to contact a portion of the cigar lighter socket carrying a positive battery voltage;
a second contact, spaced from said first contact adapted for connecting a power supply means for the test apparatus to the portion of the cigar lighter socket carrying a positive battery voltage, said first and second contacts being connected to substantially the same electrical point;
a static shield means relatively movable with respect to said first contact and biased to extend beyond said first contact so as to strike the cigar lighter socket before said first contact strikes the cigar lighter socket when inserting said connector plug into said cigar lighter socket so as to discharge static electricity from the test apparatus; and
a ground terminal for completing the circuit of said first and second contacts, and adapted to be connected to ground potential of the vehicle when said connector plug is connected to the cigar lighter socket.
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Accused Products
Abstract
This specification discloses a connector plug for connecting a vehicle electrical system tester to the cigar lighter socket of a vehicle for the purpose of testing portions of the vehicle electrical system. The connector plug can have two separate connections to the positive side of the battery so that one connection can be used to power the tester and, independently, the other connector can be used to monitor the voltage change across the battery. Further, the plug can also include a static shield for eliminating a static electric charge on the vehicle electrical system tester as the plug is inserted into the cigar lighter thus preventing the static charge from damaging sensitive measurement circuitry or altering memory circuitry.
17 Citations
7 Claims
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1. A connector plug for connecting a test apparatus used for testing a vehicle electrical system to the socket of a cigar lighter of a vehicle, said connector plug comprising:
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a first contact adapted for connecting a signal processing component to the vehicle, said first contact being adapted to contact a portion of the cigar lighter socket carrying a positive battery voltage; a second contact, spaced from said first contact adapted for connecting a power supply means for the test apparatus to the portion of the cigar lighter socket carrying a positive battery voltage, said first and second contacts being connected to substantially the same electrical point; a static shield means relatively movable with respect to said first contact and biased to extend beyond said first contact so as to strike the cigar lighter socket before said first contact strikes the cigar lighter socket when inserting said connector plug into said cigar lighter socket so as to discharge static electricity from the test apparatus; and a ground terminal for completing the circuit of said first and second contacts, and adapted to be connected to ground potential of the vehicle when said connector plug is connected to the cigar lighter socket. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification