US4507630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise filter for connectors
Assignee: Murata Manufacturing Co Ltd
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Filing: 1983-01-17
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Granted: 1985-03-26
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Expires: 2003-01-17
Abstract
Abstract A noise filter (17) comprising a plurality of cylindrical capacitors (12) having a throughgoing hole (13) for receiving a connection pin (20) of a connector (18). The inner peripheral surface of each cylindrical capacitor (12) is formed with an inner electrode (14) for electric connection to the connection pin. The outer peripheral surface of the cylindrical capacitor (12) is formed with an outer electrode (15). The plurality of cylindrical capacitors (12) are bunched with their outer peripheral surfaces contacting with each other, their outer electrodes being electrically connected together.
Inventors
- 👤 Kikuo Wakino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:42
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/719; H01R13/7197; H01G; H01G4/00; H01G4/28; H01G4/38; H03; H03H; H03H1/00; H03H1/0007
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
194 words
A connector having a built in noise filter, said connector comprising: a plurality of cylindrical capacitors each having an inner peripheral surface defining a throughgoing hole, an outer peripheral surface opposed to said inner peripheral surface, an inner electrode formed on said inner peripheral surface and an outer electrode formed on said outer peripheral surface; a plurality of connection pins; first means external to said capacitors for orienting said connection pins in a desired pattern with said pins being spaced apart and parallel to one another; second means for orienting said capacitors so that their throughgoing holes are located in a pattern corresponding to said desired pattern and said pins may be simultaneously inserted into respective ones of said throughgoing holes, each pin being associated with that said capacitor into whose throughgoing hole it extends, said second means mechanically fixing said capacitors to one another such that each said cylindrical capacitor has its outer electrode in electrical and physical contact with at least one adjacent cylindrical capacitor; and third means for electrically connecting each said pin to said inner electrode of its associated capacitor when said pins have been inserted into said throughgoing holes.
Claim 2
Dependent Claim
194 words
A connector having a built in noise filter, said connector comprising: a plurality of cylindrical capacitors each having an inner peripheral surface defining a throughgoing hole, an outer peripheral surface opposed to said inner peripheral surface, an inner electrode formed on said inner peripheral surface and an outer electrode formed on said outer peripheral surface; a plurality of connection pins; first means external to said capacitors for orienting said connection pins in a desired pattern with said pins being spaced apart and parallel to one another; second means for orienting said capacitors so that their throughgoing holes are located in a pattern corresponding to said desired pattern and said pins may be simultaneously inserted into respective ones of said throughgoing holes, each pin being associated with that said capacitor into whose throughgoing hole it extends, said second means mechanically fixing said capacitors to one another such that each said cylindrical capacitor has its outer electrode in electrical and physical contact with at least one adjacent cylindrical capacitor; and third means for electrically connecting each said pin to said inner electrode of its associated capacitor when said pins have been inserted into said throughgoing holes.
Claim 3
Dependent Claim
22 words
A noise filter as set forth in claim 1, wherein said plurality of cylindrical capacitors are of the same shape and size.
Claim 4
Dependent Claim
27 words
A noise filter as set forth in claim 1, wherein at least one of said plurality of cylindrical capacitors does not have said connection pin extending therethrough.
Claim 5
Dependent Claim
37 words
A noise filter as set forth in claim 1, wherein a cylindrical capacitor which does not have said connection pin extending therethrough is replaced by a spacer having the same shape and size as said cylindrical capacitor.
Claim 6
Dependent Claim
27 words
A noise filter as set forth in claim 1, wherein said first means includes soldering for connecting the outer electrodes of said cylindrical capacitors to each other.
Claim 7
Dependent Claim
31 words
A noise filter as set forth in claim 1, wherein said first means includes an electrically conductive adhesive agent for connecting the outer electrodes of said cylindrical capacitors to each other.
Claim 8
Dependent Claim
26 words
A noise filter as set forth in claim 1, wherein said first means includes a hoop-like member surrounding the bunch of said plurality of cylindrical capacitors.
Claim 9
Dependent Claim
17 words
A noise filter as set forth in claim 7, wherein said hoop-like member is a metal ring.
Claim 10
Dependent Claim
16 words
A noise filter as set forth in claim 7, wherein said hoop-like member is a belt.
Claim 11
Dependent Claim
22 words
A noise filter as set forth in claim 7, wherein said hoop-like member is a portion of the case of said connector.
Claim 12
Dependent Claim
28 words
A noise filter as set forth in claim 1, further comprising insulating resin which covers said plurality of cylindrical capacitors bunched and having said connection pins extending therethrough.
Claim 13
Dependent Claim
29 words
A noise filter as set forth in claim 1, further comprising a cylindrical magnetic body disposed between the inner peripheral surface of said cylindrical capacitor and said connection pin.
Claim 14
Dependent Claim
21 words
A noise filter as set forth in claim 1, wherein said second means includes soldering or an electrically conductive adhesive agent.
Claim 15
Dependent Claim
25 words
A noise filter as set forth in claim 1, wherein said second means includes a pressure fit between said connection pins and said inner electrodes.
Claim 16
Dependent Claim
36 words
A noise filter as set forth in claim 1, wherein said second means includes a spring strip provided on the lateral surface of said connection pin, said spring strip being adapted to contact said inner electrode.
Claim 17
Dependent Claim
19 words
A connector according to claim 1, wherein said first means comprises a base plate from which said pin project.
Claim 18
Dependent Claim
19 words
The connector of claim 16, further including fourth means for mechanically coupling said base plate to said cylindrical capacitors.
Claim 19
Dependent Claim
13 words
The connector of claim 17, wherein said fourth means comprises a cylindrical case.
Claim 20
Dependent Claim
174 words
A connector having a noise filter built therein, said connector comprising: (A) N connection pins, N being an integer greater than 1; (B) N+1 cylindrical capacitors, each said capacitor including: (1) a dielectric cylindrical core having an inner peripheral surface defining a throughgoing hole; (2) an outer peripheral surface opposed to said inner peripheral surface; and (3) inner and outer electrodes formed on said inner and outer peripheral surface, respectively; (C) first means for bunching said plurality of cylindrical capacitors mechanically fixing them such that each cylindrical capacitor has its outer electrode in contact with said outer electrode of at least one said capacitor which is adjacent thereto whereby said outer electrodes are electrically connected to one another; (D) each said connection pin extending through a respective one of said throughgoing holes; and (E) second means for electrically connecting each said pin to that said inner electrode located in said through hole through which said pin extends whereby all but one of said capacitors is electrically coupled to a respective one of said pins.
Claim 21
Dependent Claim
174 words
A connector having a noise filter built therein, said connector comprising: (A) N connection pins, N being an integer greater than 1; (B) N+1 cylindrical capacitors, each said capacitor including: (1) a dielectric cylindrical core having an inner peripheral surface defining a throughgoing hole; (2) an outer peripheral surface opposed to said inner peripheral surface; and (3) inner and outer electrodes formed on said inner and outer peripheral surface, respectively; (C) first means for bunching said plurality of cylindrical capacitors mechanically fixing them such that each cylindrical capacitor has its outer electrode in contact with said outer electrode of at least one said capacitor which is adjacent thereto whereby said outer electrodes are electrically connected to one another; (D) each said connection pin extending through a respective one of said throughgoing holes; and (E) second means for electrically connecting each said pin to that said inner electrode located in said through hole through which said pin extends whereby all but one of said capacitors is electrically coupled to a respective one of said pins.
Claim 22
Dependent Claim
130 words
A noise filter used in a connector having a plurality of connection pins, said noise filter comprising: a plurality of cylindrical capacitors each having an inner peripheral surface defining a throughgoing hole and an outer peripheral surface opposed to said inner peripheral surface, an inner electrode formed on said inner peripheral surface and an outer electrode formed on said inner peripheral surface and an outer electrode formed on said outer peripheral surface; first means for bunching said plurality of cylindrical capacitors, mechanically fixing them such that each cylindrical capacitor has its outer peripheral surface in contact with said outer peripheral surface of at least one adjacent cylindrical capacitor, and electrically connecting said outer surfaces to each other, said first means including a hoop-like member surrounding said plurality of cylindrical capacitors.
Claim 23
Dependent Claim
130 words
A noise filter used in a connector having a plurality of connection pins, said noise filter comprising: a plurality of cylindrical capacitors each having an inner peripheral surface defining a throughgoing hole and an outer peripheral surface opposed to said inner peripheral surface, an inner electrode formed on said inner peripheral surface and an outer electrode formed on said inner peripheral surface and an outer electrode formed on said outer peripheral surface; first means for bunching said plurality of cylindrical capacitors, mechanically fixing them such that each cylindrical capacitor has its outer peripheral surface in contact with said outer peripheral surface of at least one adjacent cylindrical capacitor, and electrically connecting said outer surfaces to each other, said first means including a hoop-like member surrounding said plurality of cylindrical capacitors.
Claim 24
Dependent Claim
17 words
A noise filter as set forth in claim 20, wherein said hoop-like member is a metal ring.
Claim 25
Dependent Claim
16 words
A noise filter as set forth in claim 20, wherein said hoop-like member is a belt.
Claim 26
Dependent Claim
24 words
A noise filter as set forth in claim 20, wherein said hoop-like member is a portion of a case forming part of said connector.
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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |