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US4092587A Expired / Lapsed US ⏱️ 0.0 years remaining

Contact protection test set

Assignee: AT&T Inc
•
Filing: 1976-09-01
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Granted: 1978-05-30
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Expires: 1996-09-01
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Abstract

Abstract A test set for testing relay contact protection networks comprising a signal generator coupled to an analyzing circuit and a test connector arranged for enabling the test set to be used for in-circuit testing of contact protection networks. The test connector is constructed of two elongated insulating members each having a tapered operative arm on which contact elements coupled to the analyzing circuit are mounted. Hinge apparatus supports the two elongated members and enables both angular and parallel lateral relative movement of each of the tapered operative arms to selectively connect the contact elements with ones of the contact protection networks.

Inventors

  • 👤 Charles Fred Selkow, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 23:13
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/327; G01R31/3277; G01R31/3278; H; H01; H01R; H01R11/00; H01R11/11; H01R11/22; H01R11/24

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 122 words
A test set for testing contact protection networks comprising means for generating a test signal; means connected to said generating means for analyzing the contact protection networks; and means for selectively connecting said test set to ones of the contact protection networks comprising a pair of insulating elongated members each having a tapered operative end, contact means attached to said tapered operative end of one of said elongated members and to the tapered operative ends of both of said elongated members, hinge means supporting said elongated members for enabling both angular and parallel lateral relative movement thereof to selectively couple said contact means with ones of the contact protection networks, and conductor means for coupling said contact means with said analyzing means.
Claim 2
Dependent Claim 122 words
A test set for testing contact protection networks comprising means for generating a test signal; means connected to said generating means for analyzing the contact protection networks; and means for selectively connecting said test set to ones of the contact protection networks comprising a pair of insulating elongated members each having a tapered operative end, contact means attached to said tapered operative end of one of said elongated members and to the tapered operative ends of both of said elongated members, hinge means supporting said elongated members for enabling both angular and parallel lateral relative movement thereof to selectively couple said contact means with ones of the contact protection networks, and conductor means for coupling said contact means with said analyzing means.
Claim 3
Dependent Claim 73 words
The test set defined in claim 1 wherein said analyzing means comprises a meter calibrated to define an operational status of ones of the contact protection networks in accordance with predetermined values of rectified test signals applied thereto, and bridge means connecting said generating means to said meter for rectifying a portion of said test signal applied to one of the contact protection networks and applying said rectified test signal to said meter.
Claim 4
Dependent Claim 66 words
The test set defined in claim 1 wherein said contact means comprises a pair of first contact elements each individually mounted on an inside facing surface of said tapered operative end of each one of said elongated members, and a second contact element mounted on a tapered surface of said tapered operative end of one of said elongated members opposite one of said first contact elements.
Claim 5
Dependent Claim 77 words
The test set defined in claim 3 wherein said conductor means comprises a multi-lead conductor having a pair of leads each individually secured to one of said elongated members for electrically connecting one of said first contact elements with said analyzing means, and a conducting lead secured to both said elongated members for electrically connecting said second contact element mounted on said one elongated member to the first contact element mounted on the other said elongated member.
Claim 6
Dependent Claim 268 words
A test set for testing contact protection networks comprising a signal generator for generating a test signal; a meter calibrated to define an operational status of ones of the contact protection networks in accordance with predetermined values of rectified test signals applied thereto; a bridge circuit connecting said signal generator to said meter for rectifying a portion of said test signal applied to ones of the contact protection networks and applying said rectified test signal to said meter; and a test connector for selectively connecting said test set to ones of the contact protection networks comprising two insulating elongated members each having a tapered operative arm, a pair of first contact elements each individually mounted on an inside facing surface of said tapered operative arm of each of said elongated members, a second contact element mounted on a tapered surface of said tapered operative arm of one of said elongated members opposite one of said first contact elements, a pair of hinge plates for supporting said elongated members and enabling both angular and parallel lateral relative movement of said tapered operative arms thereof to selectively couple said first contact elements and said second contact element and one of said first contact elements with said ones of the contact protection networks, a pair of conductor leads each individually secured to one of said elongated members for electrically connecting said first contact elements with said rectifying bridge and said signal generator, and a conducting lead for electrically connecting said second contact element mounted on said one elongated member to the first contact element mounted on the other said elongated member.
Claim 7
Dependent Claim 268 words
A test set for testing contact protection networks comprising a signal generator for generating a test signal; a meter calibrated to define an operational status of ones of the contact protection networks in accordance with predetermined values of rectified test signals applied thereto; a bridge circuit connecting said signal generator to said meter for rectifying a portion of said test signal applied to ones of the contact protection networks and applying said rectified test signal to said meter; and a test connector for selectively connecting said test set to ones of the contact protection networks comprising two insulating elongated members each having a tapered operative arm, a pair of first contact elements each individually mounted on an inside facing surface of said tapered operative arm of each of said elongated members, a second contact element mounted on a tapered surface of said tapered operative arm of one of said elongated members opposite one of said first contact elements, a pair of hinge plates for supporting said elongated members and enabling both angular and parallel lateral relative movement of said tapered operative arms thereof to selectively couple said first contact elements and said second contact element and one of said first contact elements with said ones of the contact protection networks, a pair of conductor leads each individually secured to one of said elongated members for electrically connecting said first contact elements with said rectifying bridge and said signal generator, and a conducting lead for electrically connecting said second contact element mounted on said one elongated member to the first contact element mounted on the other said elongated member.
Claim 8
Dependent Claim 160 words
A test connector for use in selectively connecting a test signal generator and analyzing circuit of a test set with contact protection networks comprising a pair of insulating elongated members each having a tapered operative arm, a pair of first contact elements each individually attached to an inside facing surface of said tapered operative arm of each of said elongated members, a second contact element mounted on a tapered surface of said tapered operative arm of one of said elongated members opposite one of said first contact elements, a pair of hinge plates for supporting said elongated members to enable both angular and parallel lateral relative movement of said elongated member tapered operative arms to selectively connect said first and second contact elements with ones of the contact protection networks, and conducting means for electrically connecting said first contact elements with the test signal generator and analyzing circuit and said second contact element with one of said first contact elements.
Claim 9
Dependent Claim 160 words
A test connector for use in selectively connecting a test signal generator and analyzing circuit of a test set with contact protection networks comprising a pair of insulating elongated members each having a tapered operative arm, a pair of first contact elements each individually attached to an inside facing surface of said tapered operative arm of each of said elongated members, a second contact element mounted on a tapered surface of said tapered operative arm of one of said elongated members opposite one of said first contact elements, a pair of hinge plates for supporting said elongated members to enable both angular and parallel lateral relative movement of said elongated member tapered operative arms to selectively connect said first and second contact elements with ones of the contact protection networks, and conducting means for electrically connecting said first contact elements with the test signal generator and analyzing circuit and said second contact element with one of said first contact elements.

References Cited (Backward Citations)

US999977A Cited
US1638438A Cited
GB744326A Cited
US2889519A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-29 1981-11-28 1982-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-29 1985-11-28 1986-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-29 1989-11-28 1990-05-30 $7700.00 Window Closed / Lapsed

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