US3586933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trimmable monolithic capacitor and method of making the same
Assignee: Gulton Industries Inc
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Filing: 1970-01-15
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Granted: 1971-06-22
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Expires: 1990-01-15
Abstract
Abstract A trimmable capacitor is formed of a monolithic capacitor body made of a plurality of peripherally fired together layers of insulating material each coated with a conductive material forming a capacitor plate. Preferably, at least one rough trimming adjustment plate is formed by a conductive coating on one of the layers of insulating material and opposite a main plate-forming conductive coating of an adjacent layer of insulating material. Also, a plurality of fine trimming adjustment plate means are formed by spaced-apart conductive coatings on another layer of insulating material opposite a second plate-forming conductive coating on an adjacent layer of insulating material. The rough trimming plate means and each of the fine trimming plate means have edge portions extending to one side of the capacitor body and are selectively connected in circuit with one group of the main capacitor-forming plates incrementally to increase the capacitance value thereof to a desired fixed capacitance value.
Inventors
- 👤 Joseph N Bonini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:22
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
213 words
A trimmable monolithic ceramic capacitor having layers of ceramic material with capacitor plate-forming conductive coatings thereon and fixed to form a monolithic capacitor body, said capacitor plate-forming conductive coatings of the various layers of ceramic material forming a first group of capacitor plates extending to one end of said capacitor body and a second group of capacitor plates interleaved with said first group of capacitor plates and extending to the other end of said capacitor body, and said capacitor body having at least one layer of ceramic material with at least one trimming plate-forming conductive coating terminating short of the end of the capacitor body and extending to a side edge thereof, said trimming plate-forming conductive coating being opposite at least one capacitor plate extending to one end of said capacitor body, a first capacitor terminalforming conductive coating on said one end of said capacitor body and overlying and electrically interconnecting the portions of the first group of capacitor plates extending thereto and a second capacitor terminal-forming conductive coating on the other end of said capacitor body and overlying and electrically interconnecting the portions of the second group of capacitor plates extending thereto and also overlying the portion of said trimming plate-forming conductive coating extending to the side edge of the capacitor body.
Claim 2
Dependent Claim
213 words
A trimmable monolithic ceramic capacitor having layers of ceramic material with capacitor plate-forming conductive coatings thereon and fixed to form a monolithic capacitor body, said capacitor plate-forming conductive coatings of the various layers of ceramic material forming a first group of capacitor plates extending to one end of said capacitor body and a second group of capacitor plates interleaved with said first group of capacitor plates and extending to the other end of said capacitor body, and said capacitor body having at least one layer of ceramic material with at least one trimming plate-forming conductive coating terminating short of the end of the capacitor body and extending to a side edge thereof, said trimming plate-forming conductive coating being opposite at least one capacitor plate extending to one end of said capacitor body, a first capacitor terminalforming conductive coating on said one end of said capacitor body and overlying and electrically interconnecting the portions of the first group of capacitor plates extending thereto and a second capacitor terminal-forming conductive coating on the other end of said capacitor body and overlying and electrically interconnecting the portions of the second group of capacitor plates extending thereto and also overlying the portion of said trimming plate-forming conductive coating extending to the side edge of the capacitor body.
Claim 3
Dependent Claim
70 words
The trimmable monolithic ceramic capacitor of claim 1 wherein said one layer of ceramic material has a number of longitudinally spaced fine trimming capacitor plate-forming conductive coatings each extending to a different point on the side edge of said capacitor body, and said second capacitor terminal-forming conductive coating overlying the edges of a number of said trimming plate-forming conductive coatings necessary to provide a capacitor of the desired capacitance value.
Claim 4
Dependent Claim
151 words
A trimmable capacitor comprising a body of dielectric material having interleaving main capacitor plates having edges exposed at the opposite ends of the dielectric body, and a plurality of individual fine trimming plates within said dielectric body and each being opposite at least one main capacitor plate having an edge exposed at one of the ends of the dielectric body, said fine trimming plates haviNg edges exposed at different points on the side of the dielectric body, a first capacitor terminal at one end of said dielectric body overlying and electrically interconnecting said exposed edges of the main capacitor plates thereat, a second capacitor terminal at the other end of said dielectric body overlying and electrically interconnecting the said exposed edges of the main capacitor plates thereat and also overlying and interconnecting said exposed edges of less than all of said fine trimming plates at the side of the dielectric body.
Claim 5
Dependent Claim
151 words
A trimmable capacitor comprising a body of dielectric material having interleaving main capacitor plates having edges exposed at the opposite ends of the dielectric body, and a plurality of individual fine trimming plates within said dielectric body and each being opposite at least one main capacitor plate having an edge exposed at one of the ends of the dielectric body, said fine trimming plates haviNg edges exposed at different points on the side of the dielectric body, a first capacitor terminal at one end of said dielectric body overlying and electrically interconnecting said exposed edges of the main capacitor plates thereat, a second capacitor terminal at the other end of said dielectric body overlying and electrically interconnecting the said exposed edges of the main capacitor plates thereat and also overlying and interconnecting said exposed edges of less than all of said fine trimming plates at the side of the dielectric body.
Claim 6
Dependent Claim
86 words
The trimmable capacitor of claim 3 wherein each of said fine trimming capacitor plates has a similar area which is a small fraction of the corresponding cross-sectional area of the dielectric body, each trimming plate extends to a different longitudinal point of the side of the capacitor, and said capacitor terminals are conductive coatings on the ends of the dielectric body one of which extends longitudinally to cover said exposed edges of a number of trimming capacitor plates necessary to provide a capacitance of desired value.
Claim 7
Dependent Claim
163 words
A trimmable capacitor comprising a dielectric body having a first group of main capacitor plates having exposed edges at one area of said capacitor body to form a first terminal receiving area for interconnecting the plates of said first group and a second group of main capacitor plates interleaved with said first group of plates and having exposed edges at another area of said capacitor body to form a second terminal receiving area for interconnecting the plates of said second group of plates, and a number of similar fine trimming plates within said capacitor body each opposite at least one of the main capacitor plates for increasing the capacitance of the capacitor in similar small increments, said fine trimming plates being unconnected and having edges thereof exposed at different points on the dielectric body to be selectively connected with the exposed edges of one of said groups of plates to increase the capacitance value of the capacitor body to a desired accurate value.
Claim 8
Dependent Claim
163 words
A trimmable capacitor comprising a dielectric body having a first group of main capacitor plates having exposed edges at one area of said capacitor body to form a first terminal receiving area for interconnecting the plates of said first group and a second group of main capacitor plates interleaved with said first group of plates and having exposed edges at another area of said capacitor body to form a second terminal receiving area for interconnecting the plates of said second group of plates, and a number of similar fine trimming plates within said capacitor body each opposite at least one of the main capacitor plates for increasing the capacitance of the capacitor in similar small increments, said fine trimming plates being unconnected and having edges thereof exposed at different points on the dielectric body to be selectively connected with the exposed edges of one of said groups of plates to increase the capacitance value of the capacitor body to a desired accurate value.
Claim 9
Dependent Claim
50 words
The trimmable capacitor of claim 5 wherein said dielectric body is rectangular in configuration, and said first terminal-receiving area is formed at one end thereof and said second terminal-receiving area is formed at the other end thereof, and said trimming plates being exposed at the side of the dielectric body.
Claim 10
Dependent Claim
74 words
The trimmable capacitor of claim 5 having a first terminal on said capacitor body at said first terminal-receiving area and overlying and electrically interconnecting said exposed edges of said first group of plates and extending to the exposed edges of selected ones of said trimming plates, and a second terminal on said capacitor body at said second terminal-receiving area where it overlies and electrically interconnects said exposed edges of said second group of plates.
Claim 11
Dependent Claim
65 words
The trimmable capacitor of claim 5 wherein said fine trimming plates are located in the same plane and each has an area much less than the area of any one of the main capacitor-forming plates within said dielectric body and edge portions thereof exposed selectively to be connected with said first group of plates to increase the capacitance value of said capacitor in discrete increments.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |