Patent US3705335A successfully refreshed from Google Patents.
US3705335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low height ceramic capacitor for printed circuit board mounting
Assignee: Jfd Electronics Corp
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Filing: 1971-08-19
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Granted: 1972-12-05
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Expires: 1991-08-19
Abstract
Abstract A trimmer capacitor having painted conductive leads is soldered directly to appropriate conductive sections of a printed circuit panel. A portion of the adjustment mechanism of the printed circuit board is disposed at least partly within an opening in the printed circuit board so that the capacitor height above the surface of the board is reduced by the thickness of the board. In one disclosed embodiment, the rotor electrode is electrically connected to an electrode on the bottom of the stator body, which electrode is soldered to the printed circuit board. The rotor body has a diameter smaller than that of the stator body and is enclosed by a tubular soldering shield while the capacitor is being connected to the printed circuit board.
Inventors
- 👤 Louis G Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:14
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/01; H01G5/04; H01G5/06; H05; H05K; H05K1/00; H05K1/16; H05K1/162; H05K1/18
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
324 words
In combination, a flat panel of insulation material, and a trimmer capacitor; said panel having a conductive region on one surface thereof; said panel having an opening therethrough; said trimmer capacitor comprising a stator body, a rotor body, an adjustment shaft connected to said rotor Body and rotatable therewith and securement means for securing one end of said shaft relative to said stator body, whereby said rotor and stator bodies engage one another over an interface and are rotatable relative to one another; said stator body comprising a flat body of dielectric material having an elongated stator electrode secured thereto and coplanar therewith; said stator body having an opening therethrough in alignment with said opening in said panel; one surface of said stator body which is opposite the surface engaged by said rotor body being secured to said one surface of said panel; and solder means for soldering said elongated electrode of said stator body to said conductive region; said rotor body comprising a flat body of dielectric material disposed in a plane parallel to the plane of said stator body; an elongated rotor electrode supported by said rotor body and disposed in a plane parallel to the plane of said rotor body, and defining a variable capacitance with said stator electrode, depending on their relative angular positions; said rotor body having an opening therethrough aligned with said opening in said panel; said adjustment shaft extending through said opening in said rotor body, and through said opening in said stator body, and through said opening in said panel; said securement means connected to the end of said adjustment shaft adjacent said panel and being at least partly disposed within said opening in said panel; said securement means mechanically securing said adjustment shaft relative to said panel; said adjustment shaft being electrically connected to said rotor electrode; and electrical connection means connected to said adjustment shaft for forming an electrical connection to said rotor electrode.
Claim 2
Dependent Claim
324 words
In combination, a flat panel of insulation material, and a trimmer capacitor; said panel having a conductive region on one surface thereof; said panel having an opening therethrough; said trimmer capacitor comprising a stator body, a rotor body, an adjustment shaft connected to said rotor Body and rotatable therewith and securement means for securing one end of said shaft relative to said stator body, whereby said rotor and stator bodies engage one another over an interface and are rotatable relative to one another; said stator body comprising a flat body of dielectric material having an elongated stator electrode secured thereto and coplanar therewith; said stator body having an opening therethrough in alignment with said opening in said panel; one surface of said stator body which is opposite the surface engaged by said rotor body being secured to said one surface of said panel; and solder means for soldering said elongated electrode of said stator body to said conductive region; said rotor body comprising a flat body of dielectric material disposed in a plane parallel to the plane of said stator body; an elongated rotor electrode supported by said rotor body and disposed in a plane parallel to the plane of said rotor body, and defining a variable capacitance with said stator electrode, depending on their relative angular positions; said rotor body having an opening therethrough aligned with said opening in said panel; said adjustment shaft extending through said opening in said rotor body, and through said opening in said stator body, and through said opening in said panel; said securement means connected to the end of said adjustment shaft adjacent said panel and being at least partly disposed within said opening in said panel; said securement means mechanically securing said adjustment shaft relative to said panel; said adjustment shaft being electrically connected to said rotor electrode; and electrical connection means connected to said adjustment shaft for forming an electrical connection to said rotor electrode.
Claim 3
Dependent Claim
63 words
The combination of claim 1 wherein said securement means defines a mechanical connection from said adjustment shaft to a portion of the surface of said stator body which is adjacent said panel; said stator body being mechanically secured to said panel, at least in part, by the said solder means whereby said rotor body and said adjustment shaft are secured to said panel.
Claim 4
Dependent Claim
81 words
The combination of claim 1 wherein said stator body includes a conductive coating on the surface thereof adjacent said panel, which conductive coating extends to the outer periphery of said stator body, and further including a second conductive region on said one surface of said panel, and means electrically connecting said adjustment shaft to said conductive coating on said stator body; and a second solder means for soldering said conductive coating, and thus said stator body, to said second conductive region.
Claim 5
Dependent Claim
63 words
The combination of claim 3 wherein said securement means defines a mechanical connection from said adjustment shaft to a portion of the surface of said stator body which is adjacent said panel; said stator body being mechanically secured to said panel, at least in part, by the said solder means whereby said rotor body and said adjustment shaft are secured to said panel.
Claim 6
Dependent Claim
47 words
The combination of claim 1 wherein said rotor body has a diameter smaller than the diameter of said stator body to expose an annular ring about the top surface of said stator body; said annular ring being adapted to receive a hollow tubular soldering shield during soldering.
Claim 7
Dependent Claim
47 words
The combination of claim 3 wherein said rotor body has a diameter smaller than the diameter of said stator body to expose an annular ring about the top surface of said stator body; said annular ring being adapted to receive a hollow tubular soldering shield during soldering.
Claim 8
Dependent Claim
41 words
The combination of claim 1 wherein said securement means includes a bowed washer pressed between first and second flat washers; said first washer mechanically bearing against said stator body; said second washer mechanically connected to said end of said adjustment shaft.
Claim 9
Dependent Claim
40 words
The combination of claim 1 wherein said securement means includes a bowed washer pressed between first and second flat washers; said fiRst washer mechanically bearing against said panel; said second washer mechanically connected to said end of said adjustment shaft.
Claim 10
Dependent Claim
24 words
The combination of claim 1 wherein at least one of said stator electrode or said rotor electrode is embedded in their respective dielectric body.
Claim 11
Dependent Claim
29 words
The combination of claim 1 wherein said stator electrode has an extension thereon extending along the outer periphery of said stator body; said solder means connected to said extension.
Claim 12
Dependent Claim
72 words
The combination of claim 3 wherein said stator electrode has an extension thereon extending along the outer periphery of said stator body; said solder means connected to said extension, and wherein said second conductive region has an extension thereon extending along the outer periphery of said stator body at a region spaced from said extension from said stator electrode; said second solder means connected to said extension of said second conductive region.
Claim 13
Dependent Claim
63 words
The combination of claim 11 wherein said stator electrode extends over a portion of the surface of said stator body which faces said rotor body; said extension of said second conductive region comprising a conductive pad section disposed on said last-mentioned surface and spaced from said stator electrode and defining, with said stator electrode, a continuous surface for slidably receiving said rotor body.
Claim 14
Dependent Claim
176 words
A trimmer capacitor adapted for solder-mounting on a printed circuit board; said trimmer capacitor comprising a stator body having a stator electrode and a rotor body having a rotor electrode; said stator body and said rotor body each comprising thin dielectric wafers having respective first and second parallel surfaces; adjustment shaft means connected to said rotor body and holding said first parallel surface of each of said stator body and said rotor body respectively adjacent one another with said rotor body being rotatable relative to said stator body; said stator body having first and second spaced conductive regions at its outer periphery; said first conductive region of said stator body being electrically connected to said stator electrode; said second conductive region of said stator body being electrically connected to said rotor electrode; said first and second conductive regions being solderable for mechanically connecting said first and second conductive regions of said stator body to respective first and second conductive regions of a printed circuit board for mechanically connecting said trimmer capacitor to a printed circuit board.
Claim 15
Dependent Claim
176 words
A trimmer capacitor adapted for solder-mounting on a printed circuit board; said trimmer capacitor comprising a stator body having a stator electrode and a rotor body having a rotor electrode; said stator body and said rotor body each comprising thin dielectric wafers having respective first and second parallel surfaces; adjustment shaft means connected to said rotor body and holding said first parallel surface of each of said stator body and said rotor body respectively adjacent one another with said rotor body being rotatable relative to said stator body; said stator body having first and second spaced conductive regions at its outer periphery; said first conductive region of said stator body being electrically connected to said stator electrode; said second conductive region of said stator body being electrically connected to said rotor electrode; said first and second conductive regions being solderable for mechanically connecting said first and second conductive regions of said stator body to respective first and second conductive regions of a printed circuit board for mechanically connecting said trimmer capacitor to a printed circuit board.
Claim 16
Dependent Claim
47 words
The combination of claim 13 wherein said rotor body has a diameter smaller than the diameter of said stator body to expose an annular ring about the top surface of said stator body; said annular ring being adapted to receive a hollow tubular soldering shield during soldering.
Claim 17
Dependent Claim
213 words
A trimmer capacitor adapted for solder-mounting on a printed circuit board; said trimmer capacitor comprising a stator body having a stator electrode and a rotor body having a rotor electrode; said stator body and said rotor body each comprising thin dielectric wafers having respective first and second parallel surfaces; adjustment shaft means connected to said rotor body and holding said first parallel surface of each of said stator body and rotor body respectively adjacent one another with said rotor body being rotatable relative to said stator body; said stator body having first and second spaced conductive regions at its outer periphery; said first conductive region of said stator body being electrically connected to said stator electrode; said second conductive region of said stator body being electrically connected to said rotor electrode; said first and second conductive regions being solderable for mechanically connecting said first and second conductive regions of said stator body to respective first and second conductive regions of a printed circuit board for mechanically connecting said trimmer capacitor to a printed circuit board; said stator electrode being formed on said first surface of said stAtor body; said stator body having a conductive mounting electrode formed on its said second surface; said conductive mounting electrode being connected to said second conductive region.
Claim 18
Dependent Claim
213 words
A trimmer capacitor adapted for solder-mounting on a printed circuit board; said trimmer capacitor comprising a stator body having a stator electrode and a rotor body having a rotor electrode; said stator body and said rotor body each comprising thin dielectric wafers having respective first and second parallel surfaces; adjustment shaft means connected to said rotor body and holding said first parallel surface of each of said stator body and rotor body respectively adjacent one another with said rotor body being rotatable relative to said stator body; said stator body having first and second spaced conductive regions at its outer periphery; said first conductive region of said stator body being electrically connected to said stator electrode; said second conductive region of said stator body being electrically connected to said rotor electrode; said first and second conductive regions being solderable for mechanically connecting said first and second conductive regions of said stator body to respective first and second conductive regions of a printed circuit board for mechanically connecting said trimmer capacitor to a printed circuit board; said stator electrode being formed on said first surface of said stAtor body; said stator body having a conductive mounting electrode formed on its said second surface; said conductive mounting electrode being connected to said second conductive region.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |