US5139442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular jack
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1991-12-02
•
Granted: 1992-08-18
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Expires: 2011-12-02
Abstract
Abstract A modular jack incorporating a varistor. The varistor reduces noise and surge (abnormal voltage) entering the modular jack, and thereby an electronic appliance such as a telephone connected with the modular jack is not affected by the noise and surge. The varistor is electrically connected between at least a pair of contact leads. Alternatively the varistor is electrically connected between the pair of contact leads and a grounding terminal. Further, the modular jack incorporates a common mode choke coil so as to obtain a common mode noise reduction effect.
Inventors
- 👤 Yukio Sakamoto
- 👤 Iwao Fukutani
- 👤 Toshio Hori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:44
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/665; H01R13/6666; H01R24/00; H01R24/60; H01R24/62
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
25 words
A modular jack comprising: an insulating housing; at least a pair of contact leads fixed to the housing; and a varistor disposed in the housing.
Claim 2
Dependent Claim
25 words
A modular jack comprising: an insulating housing; at least a pair of contact leads fixed to the housing; and a varistor disposed in the housing.
Claim 3
Dependent Claim
20 words
A modular jack as claimed in claim 1, wherein the varistor is electrically connected between the pair of contact leads.
Claim 4
Dependent Claim
22 words
A modular jack as claimed in claim 1, wherein a common mode choke coil is connected with the pair of contact leads.
Claim 5
Dependent Claim
52 words
A modular jack comprising: an insulating housing; at least a pair of contact leads fixed to the housing; a grounding terminal fixed to the housing; and a varistor disposed in the housing in such a manner to be nipped and electrically connected between the grounding terminal and the pair of contact leads.
Claim 6
Dependent Claim
52 words
A modular jack comprising: an insulating housing; at least a pair of contact leads fixed to the housing; a grounding terminal fixed to the housing; and a varistor disposed in the housing in such a manner to be nipped and electrically connected between the grounding terminal and the pair of contact leads.
Claim 7
Dependent Claim
22 words
A modular jack as claimed in claim 4, wherein a common mode choke coil is connected with the pair of contact leads.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |