US4314231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive polymer electrical devices
Assignee: Raychem Corp
•
Filing: 1980-04-21
•
Granted: 1982-02-02
•
Expires: 2000-04-21
Abstract
Abstract A method of attaching power leads to a mesh or similar electrode embedded in the surface of a conductive polymer element. A conductor, preferably also mesh, is bonded to the electrode using a conductive adhesive and a polymer layer is applied over the surface of at least the conductor, preferably also over the electrode. The polymer of the coating interpenetrates the openings of the mesh conductor and mesh electrode and bonds to the conductive polymer matrix. This mechanically holds the conductor, electrode, and conductive element in contact with each other.
Inventors
- 👤 Robert J. Walty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/02; H01C7/027; H01C1/00; H01C1/14
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
104 words
An electrical device comprising: (a) a conductive polymer element comprising conductive particles dispersed in a polymer matrix; (b) an electrode having a plurality of openings therein secured to the surface of said element; (c) a conductor having a plurality of openings superimposed over at least a portion of said electrode and conductive element and bonded thereto with an electrically conductive adhesive; and (d) a layer of polymeric material covering said conductor and interpenetrating the openings of said conductor and electrode, said polymeric material bonding to said conductive element, electrode and conductor, thereby retaining said conductor in electrical contact with said electrode and conductive element.
Claim 2
Dependent Claim
104 words
An electrical device comprising: (a) a conductive polymer element comprising conductive particles dispersed in a polymer matrix; (b) an electrode having a plurality of openings therein secured to the surface of said element; (c) a conductor having a plurality of openings superimposed over at least a portion of said electrode and conductive element and bonded thereto with an electrically conductive adhesive; and (d) a layer of polymeric material covering said conductor and interpenetrating the openings of said conductor and electrode, said polymeric material bonding to said conductive element, electrode and conductor, thereby retaining said conductor in electrical contact with said electrode and conductive element.
Claim 3
Dependent Claim
15 words
An electrical device in accordance with claim 1 wherein said electrode is a mesh electrode.
Claim 4
Dependent Claim
15 words
An electrical device in accordance with claim 2 wherein said mesh electrode is of nickel.
Claim 5
Dependent Claim
19 words
An electrical device in accordance with claim 2 wherein said mesh electrode is embedded in said conductive polymer element.
Claim 6
Dependent Claim
15 words
An electrical device in accordance with claim 1 wherein said conductor is a mesh conductor.
Claim 7
Dependent Claim
15 words
An electrical device in accordance with claim 5 wherein said mesh conductor is of copper.
Claim 8
Dependent Claim
17 words
An electrical device in accordance with claim 1 wherein said electrically conductive adhesive is a resilient adhesive.
Claim 9
Dependent Claim
21 words
An electrical device in accordance with claim 1 wherein said electrically conductive adhesive comprises conductive particles dispersed in a silicone elastomer.
Claim 10
Dependent Claim
15 words
An electrical device in accordance with claim 8 wherein said conductive particles are of silver.
Claim 11
Dependent Claim
22 words
An electrical device in accordance with claim 1 wherein said conductive polymer element comprises carbon black particles dispersed in a polymer matrix.
Claim 12
Dependent Claim
26 words
An electrical device in accordance with claim 10 wherein said polymer matrix is selected from the group consisting of polyethylene, ethylene copolymers, polypropylene and polyvinylidene fluoride.
Claim 13
Dependent Claim
23 words
An electrical device in accordance with claim 1 wherein said conductive polymer element comprises at least two layers of different conductive polymer compositions.
Claim 14
Dependent Claim
27 words
An electrical device in accordance with claim 12 wherein at least one of said layers comprises a conductive polymer composition having a positive temperature coefficient of resistance.
Claim 15
Independent Claim
142 words
A method of attaching electrical power leads to an electrical device comprising a conductive element composed of a conductive polymer composition composed of conductive particles dispersed in a polymer matrix which comprises: (a) securing an electrode having a plurality of openings to the surface of said element; (b) superimposing a conductor having a number of openings therein over at least a portion of said electrode, said conductor being coated with an electrically conductive adhesive on at least the surface thereof which contacts said electrode; (c) applying a layer of polymeric material over said conductor so that said polymeric material interpenetrates the openings of said conductor and electrode and bonds to the polymeric matrix of said conductive electrode and conductive element, thereby retaining said conductor in good electrical contact with said electrode and conductive element; and (d) attaching power leads to said conductor.
Claim 16
Independent Claim
142 words
A method of attaching electrical power leads to an electrical device comprising a conductive element composed of a conductive polymer composition composed of conductive particles dispersed in a polymer matrix which comprises: (a) securing an electrode having a plurality of openings to the surface of said element; (b) superimposing a conductor having a number of openings therein over at least a portion of said electrode, said conductor being coated with an electrically conductive adhesive on at least the surface thereof which contacts said electrode; (c) applying a layer of polymeric material over said conductor so that said polymeric material interpenetrates the openings of said conductor and electrode and bonds to the polymeric matrix of said conductive electrode and conductive element, thereby retaining said conductor in good electrical contact with said electrode and conductive element; and (d) attaching power leads to said conductor.
Claim 17
Dependent Claim
14 words
A method in accordance with claim 14 wherein said electrode is a mesh electrode.
Claim 18
Dependent Claim
14 words
A method in accordance with claim 15 wherein said mesh electrode is of nickel.
Claim 19
Dependent Claim
18 words
A method in accordance with claim 15 wherein said mesh electrode is embedded in said conductive polymer element.
Claim 20
Dependent Claim
14 words
A method in accordance with claim 14 wherein said conductor is a mesh conductor.
Claim 21
Dependent Claim
14 words
A method in accordance with claim 18 wherein said mesh conductor is of copper.
Claim 22
Dependent Claim
16 words
A method in accordance with claim 14 wherein said electrically conductive adhesive is a resiliant adhesive.
Claim 23
Dependent Claim
20 words
A method in accordance with claim 14 wherein said electrically conductive adhesive comprises conductive particles dispersed in a silicone elastomer.
Claim 24
Dependent Claim
14 words
A method in accordance with claim 21 wherein said conductive particles are of silver.
Claim 25
Dependent Claim
21 words
A method in accordance with claim 14 wherein said conductive polymer element comprises carbon black particles dispersed in a polymer matrix.
Claim 26
Dependent Claim
25 words
A method in accordance with claim 23 wherein said polymer matrix is selected from the group consisting of polyethylene, ethylene copolymers, polypropylene and polyvinylidene fluoride.
Claim 27
Dependent Claim
22 words
A method in accordance with claim 14 wherein said conductive polymer element comprises at least two layers of different conductive polymer compositions.
Claim 28
Dependent Claim
26 words
A method in accordance withh claim 25 wherein at least one of said layers comprises a conductive polymer composition having a positive temperature coefficient of resistance.
References Cited (Backward Citations)
US2278072A
Cited
US2961522A
Cited
US3237286A
Cited
US3385959A
Cited
US3351882A
Cited
US3344385A
Cited
GB1167551A
Cited
US3683361A
Cited
US3859504A
Cited
US4177376A
Cited
US4017715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |