US3743997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary resistor and shunt
Assignee: Honeywell Inc
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Filing: 1971-03-10
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Granted: 1973-07-03
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Expires: 1991-03-10
Abstract
Abstract A unitary resistor film and shunt and a method of producing same for use as a resistor element per se or as the resistance element of a linear, nonlinear or characterized potentiometer. A conductive material is screened and fired onto the resistor film at a location that is spaced inwardly of end portions of the resistor in such a manner that a negligible amount of diffusion occurs between the conductive and resistive film material to thereby reduce the resistivity of the resistor film, e.g., ten fold without incurring any change in its original size, temperature coefficient of resistivity or stability.
Inventors
- 👤 S Schebalin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:08
CPC Classifications
H; H01; H01C; H01C7/00; H01C10/00; H01C10/06; H01C10/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A unitary resistor film and shunt for an electrical circuit comprising, a resistor film, conductive material forming an outer surface portion of said resistor film that is in spaced apart relationship with its ends and wherein the conductive material provides a path through which an electrical field can be shunted as said field is transmitted through said resistor and wherein the conductive material is positioned to form an array of polka-dots.
Claim 2
Dependent Claim
50 words
The unitary resistor and shunt defined in claim 1 wherein said conductor being positioned in rows which are 0.020 inches apart from one another, are spaced at 0.030 inches from one another along each of the aforementioned rows and wherein the diameter of each disc shaped conductor is 0.020 inches.
Claim 3
Dependent Claim
120 words
A unitary resistor film and shunt for an electrical circuit comprising, a resistor film, conductive material forming an outer surface portion of said resistor film that is in spaced apart relationship with its ends and wherein the conductive material provides a path through which an electrical field can be shunted as said field is transmitted through said resistor and wherein the conductive material is positioned to form a plurality of uniform shaped spaced apart conductors and the number per unit area of said conductors between one portion of the resistor and another are positioned in a gradually diminishing pattern to enable the resistor to possess gradually decreasing resistance along the part of the resistor that extends between said two portions.
Claim 4
Dependent Claim
114 words
A unitary resistor film and shunt for an electrical circuit comprising, a resistor film, conductive material forming an outer surface portion of said resistor film that is in spaced apart relationship with its ends and wherein the conductive material provides a path through which an electrical field can be shunted as said field is transmitted through said resistor and wherein the conductive material is positioned to form a plurality of spaced apart conductors that are positioned in a prescribed varying dense relationship with one another between two portions of the resistor to enable said resistor to possess a characterized variable non-linear resistance characteristic along said resistor part that extends between its said two portions.
Claim 5
Dependent Claim
109 words
A unitary resistor film and shunt for an electrical circuit comprising, a resistor film, conductive material forming an outer surface portion of said resistor film that is in spaced apart relationship with its ends and wherein the conductive material provides a path through which an electrical field can be shunted as said field is transmitted through said resistor and wherein the conductive material is positioned to form a plurality of spaced apart conductors on the outer surface of said resistor and wherein each conductor is comprised of 70 percent by weight of silver powder, substantially 10 percent by weight of lead boro silicate glass and the remainder decanol alcohol.
Claim 6
Dependent Claim
78 words
The thick film resistor and shunt defined in claim 6 and wherein the resistor is comprised of a positive coefficient of resistivity resistor ink that possesses substantially 20 percent by weight of RuO2, 40 percent by weight of Ru and 40 percent by weight of glass frit, and a negative temperature coefficient of resistivity ink that possesses substantially 40 percent by weight of RuO2, 20 percent by weight of Ru and 40 percent by weight of glass frit.
References Cited (Backward Citations)
US2935712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |