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US 5,291,124 AGranted
Tester for high voltage measuring apparatus
AssigneeHD Electric Company
InventorsMark R. Hoffman, Niels C. Pedersen, Jr.
Life of this patent
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AssigneeHD Electric Company
InventorsMark R. Hoffman, Niels C. Pedersen, Jr.
Estimating the term…
A tester applies a high-voltage test signal across the probes of a high-voltage measuring apparatus, wherein at least one of the probes is mounted at a probe end of an elongated insulated pole. The tester includes a battery-powered generator for generating the test signal which is applied across two contact terminals, respectively adapted for connection to the probes. One of the contact terminals is disposed at the bottom of an elongated tubular socket which receives the probe end of the pole, the contact terminal including two conductive members spring-biased apart until the pole is inserted in the socket. The generator is energized through a switch which may be mounted on the generator housing. In one embodiment the other contact terminal is an alligator clip and in a second embodiment the other contact terminal is disposed in a second socket.
A portable tester for a high-voltage measuring apparatus which includes two electrically conductive probes for electrical coupling respectively to points in a high-voltage circuit between which the potential is to be measured, with at least one of the probes being disposed at a probe end of an elongated electrically insulating pole, and a voltmeter connected across the probes, said tester comprising:
The tester of claim wherein said one contact terminal includes a first conductive member connected to the corresponding one of the output terminals and a second conductive member normally spaced from said first conductive member and engageable with the probe end of the pole, and means mounting said second conductive member for movement into electrical contact with said first conductive member in response to insertion of the probe end of the pole in said socket for establishing electrical connection between the probe and said generating means.
The tester of claim wherein said socket has a length such that a human finger inserted in the socket cannot reach said one of said contact terminals.
A portable tester for a high-voltage measuring apparatus which includes two elongated electrically insulating poles each having an electrically conductive probe end, the probe ends being adapted for electrical coupling respectively to points in a high-voltage circuit between which the potential is to be measured, and a voltmeter connected across the probes, said tester comprising:
The tester of claim and further comprising activating means for selectively energizing said generating means.
Dependencies are inferred from the claim text.