US4837548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistor designed for use as an electric conducting element in an electric circuit, and relative manufacturing process
Assignee: LEDA Logarithmic Electrical Devices for Automation Srl
•
Filing: 1988-01-19
•
Granted: 1989-06-06
•
Expires: 2008-01-19
Abstract
Abstract A resistor is formed from a structure including at least one network of electrically conductive wires, and a matrix for supporting the aforementioned structure, the matrix formed from a flexible, electrically insulating material inside which the aforementioned structure is sunk, with a number of surface portions of the wires in the aforementioned networks being separated by small gaps, the resistor being formed by a manufacturing process substantially including the steps of forming a system including a structure having at least one network of electrically conductive wires, and arranging a liquid material between the wires of the aforementioned networks in the aforementioned structure, the aforementioned liquid material being designed to assume a state in which it is both solid and flexible; and in subsequently solidifying the aforementioned material in such a manner as to form a solid, flexible matrix for supporting the aforementioned structure.
Inventors
- 👤 Paolo Lodini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; H01C10/106; H01C10/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
133 words
An electric resistor designed for use as an electric conducting element in an electric circuit, comprising a structure of: a plurality of networks of electrical conductive wires each of which comprises weft wires separated from each other by warp wires, a matirx formed by a flexible, electrically insulating material in which said weft and warp wires are sunk; said networks being superimposed in the material of said matrix in such a way to obtain a regular configuration in which first sets of weft and warp wires are in contact with each other and second sets of weft and warp wires are separated from each other; said matrix formed by said flexible insulating material defining small gaps each of which is positioned between a warp and a weft wire of one said second set.
Claim 2
Dependent Claim
133 words
An electric resistor designed for use as an electric conducting element in an electric circuit, comprising a structure of: a plurality of networks of electrical conductive wires each of which comprises weft wires separated from each other by warp wires, a matirx formed by a flexible, electrically insulating material in which said weft and warp wires are sunk; said networks being superimposed in the material of said matrix in such a way to obtain a regular configuration in which first sets of weft and warp wires are in contact with each other and second sets of weft and warp wires are separated from each other; said matrix formed by said flexible insulating material defining small gaps each of which is positioned between a warp and a weft wire of one said second set.
Claim 3
Dependent Claim
20 words
An electric resistor according to claim 1; wherein said plurality of networks are arranged one on top of each other.
Claim 4
Dependent Claim
19 words
An electric resistor according to claim 1; wherein said wires in said networks are formed from electrically conductive material.
Claim 5
Dependent Claim
20 words
An electric resistor according to claim 1; wherein said wires in said networks have a coating of electrically conductive material.
Claim 6
Dependent Claim
67 words
An electric resistor according to claim 1; where said electrically insulating material of said matrix is designed to assume a first liquid state in which it is sufficiently fluid to be injected into a structure comprising a number of overlayed wire networks so as to produce a supporting matrix into which said networks are sunk, and a second state in which it is both solid and flexible.
Claim 7
Dependent Claim
27 words
An electric resistor according to claim 5; wherein said insulating material of said matrix in the liquid state has a viscosity ranging from 500 to 10,000 centipoise.
Claim 8
Dependent Claim
21 words
An electric resistor according to claim 1; wherein said flexible, electrically insulating material used for said matrix is a synthetic resin.
Claim 9
Dependent Claim
21 words
An electric resistor according to claim 7; wherein said flexible, electrically insulating material used for said matrix is a thermoplastic resin.
Claim 10
Independent Claim
85 words
A method for producing an electric resistor for use as an electric conducting element in an electric circuit, said method comprising the steps of: forming a structure including at least one network of electrically conductive wires; arranging a liquid material between the wires of each said network in said structure, said liquid material being capable of assuming a state in which it is both solid and flexible; and subsequently solidifying said liquid material so as to form a solid, flexible matrix for supporting said structure.
Claim 11
Independent Claim
85 words
A method for producing an electric resistor for use as an electric conducting element in an electric circuit, said method comprising the steps of: forming a structure including at least one network of electrically conductive wires; arranging a liquid material between the wires of each said network in said structure, said liquid material being capable of assuming a state in which it is both solid and flexible; and subsequently solidifying said liquid material so as to form a solid, flexible matrix for supporting said structure.
Claim 12
Dependent Claim
36 words
A method according to claim 9; further including the step of subjecting said structure to a given pressure perpendicular to a plane in which said at least one network lies, during solidification of said liquid material.
Claim 13
Dependent Claim
19 words
A method according to claim 9; further including the step of solidifying said liquid material by means of cooling.
Claim 14
Dependent Claim
19 words
A method according to claim 9; further including the step of solidifying said liquid material by means of curing.
Claim 15
Dependent Claim
71 words
A method according to claim 9; further including the steps of subjecting said formed structure of at least one network to a given pressure; injecting said liquid material into said structure so that the liquid material penetrates between wires of said at least one network; and solidifying said liquid material so as to produce a supporting matrix for said structure and in which said given pressure is exerted on said structure.
References Cited (Backward Citations)
US3125739A
Cited
US2042606A
Cited
US3341797A
Cited
US3629774A
Cited
US4503416A
Cited
US4659873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |