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US4449156A Expired / Lapsed US ⏱️ 0.0 years remaining

Telephone central office gas tube replacement protector

Assignee: North Hills Signal Processing Corp
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Filing: 1982-09-24
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Granted: 1984-05-15
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Expires: 2002-09-24
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Abstract

Abstract A replacement gas tube protector module for central office installation having older types of protector blocks in which the original carbon block assembly is resiliently clamped between a pair of spring fingers. The module is configured such that the resilient force exerted by the spring fingers serve to short a gas tube replacing the original carbon block in the event of failure of the gas tube component.

Inventors

  • 👤 Loren A. Singer, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:42
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/14; H01T4/00; H01T4/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 207 words
In an improved telephone protector module of a type having a channeled housing adapted to be engaged between a pair of resilient spring fingers on a protector block, the improvement comprising: a first contact element positioned within said housing and having an exposed surface thereon projecting externally of said housing to selectively contact one of said pair of spring fingers; a second contact element, positioned within said housing and having a second exposed surface thereon projecting externally in an opposite direction from said housing to simultaneously contact the other of said pair of spring fingers; a gas tube element, and a meltable solder washer disposed within said housing in aligned mutually contacting relation, one end surface of said pellet underlying said exposed surface of said first contact element, and one end of said gas tube element contacting said second contact element; said solder washer maintaining said first and second contacts in mutually spaced relation; whereby upon the engagement of said module between said first and second spring fingers, and the melting of said solder washer, the resultant force between said spring fingers serves to urge portions of said first and second contact elements into mutual contact to establish a path of conductivity bypassing said gas tube element.
Claim 2
Dependent Claim 207 words
In an improved telephone protector module of a type having a channeled housing adapted to be engaged between a pair of resilient spring fingers on a protector block, the improvement comprising: a first contact element positioned within said housing and having an exposed surface thereon projecting externally of said housing to selectively contact one of said pair of spring fingers; a second contact element, positioned within said housing and having a second exposed surface thereon projecting externally in an opposite direction from said housing to simultaneously contact the other of said pair of spring fingers; a gas tube element, and a meltable solder washer disposed within said housing in aligned mutually contacting relation, one end surface of said pellet underlying said exposed surface of said first contact element, and one end of said gas tube element contacting said second contact element; said solder washer maintaining said first and second contacts in mutually spaced relation; whereby upon the engagement of said module between said first and second spring fingers, and the melting of said solder washer, the resultant force between said spring fingers serves to urge portions of said first and second contact elements into mutual contact to establish a path of conductivity bypassing said gas tube element.

References Cited (Backward Citations)

US886374A Cited
US1726807A Cited
US2724793A Cited
US3254181A Cited
US4062053A Cited
US4086648A Cited
US4249224A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-05-15 1987-11-14 1988-05-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-05-15 1991-11-14 1992-05-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-05-15 1995-11-14 1996-05-15 $7700.00 Window Closed / Lapsed

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