Patent US1791629A successfully refreshed from Google Patents.
US3580983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive line tube
Assignee: NATIONAL CATHETER CORP
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Filing: 1969-12-03
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Granted: 1971-05-25
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Expires: 1989-12-03
Abstract
Abstract The fabrication of conductive line tubing or electrically conductive medicosurgical tubes by extruding from a mass of flexible plastic material an elongated tube contemporaneous with the extrusion of an elongated electrically conductive plastic filament that is secured to said tube in superimposed relationship piggyback arrangement. The plastic material used to form the conductive line tubes is compounded from dielectric polymers while the filament is formed from a flexible electrically conductive plastic material. The extrusion of the tube and filament is continuous with the filament being secured to the tube subsequent to its withdrawal from an extrusion die.
Inventors
- 👤 Isaac S Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/127
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
67 words
A conductive line tubing comprising an elongated tubular member formed of flexible, dielectric, waterproof plastic material, an elongated filament member secured to the exterior surface of said tubular member in superimposed relationship therewith, said filament member being formed of flexible, electrically conductive, waterproof plastic material, said filament member being capable of being connected to ground to prevent the accumulation upon said tubular member of any electrostatic charge.
Claim 2
Dependent Claim
67 words
A conductive line tubing comprising an elongated tubular member formed of flexible, dielectric, waterproof plastic material, an elongated filament member secured to the exterior surface of said tubular member in superimposed relationship therewith, said filament member being formed of flexible, electrically conductive, waterproof plastic material, said filament member being capable of being connected to ground to prevent the accumulation upon said tubular member of any electrostatic charge.
Claim 3
Dependent Claim
25 words
A conductive line tubing as set forth in claim 1 wherein said filament member is secured throughout its length to said tubular member by welding.
Claim 4
Dependent Claim
31 words
A conductive line tubing as set forth in claim 1 wherein each end of said tubular member and filament member is connected to a fitting formed of electrically conductive plastic material.
Claim 5
Dependent Claim
35 words
A conductive line tubing as set forth in claim 3 wherein each fitting is formed with an end having a configuration complementary to the end of the tubular member with the filament member mounted thereon.
Claim 6
Dependent Claim
25 words
A conductive line tubing as set forth in claim 1 wherein static bonding clamps are connected to said filament member for grounding said tubular member.
Claim 7
Dependent Claim
21 words
A conductive line tubing as set forth in claim 1 wherein said filament member is formed with a wire core member.
Claim 8
Dependent Claim
64 words
A conductive line tubing as set forth in claim 1 wherein said filament member is welded to the exterior surface of said tubular member from one end to the other whereby a portion of said filament member may be separated from said tubular member to permit the removal of a section of said tubular member while still maintaining electrical conductivity of said tubular member.
Claim 9
Dependent Claim
131 words
Plastic tubing that is capable of being electrically connected to ground to prevent accumulation thereon of an electrostAtic charge comprising: a. an elongated tube formed of flexible, dielectric, waterproof plastic material, said member having a substantially uniform continuous exterior wall and, b. an elongated filament having a diameter substantially less than the diameter of said tube formed of flexible, electrically conductive, waterproof plastic material, c. said filament being completely external of said tube and secured to said tube only along a line of tangential contact between the exterior wall of the filament and the exterior wall of the tube whereby said filament may be separated from the tube along any selected length by pulling the filament away from the tube without any substantial disturbance to said exterior wall of the tube.
Claim 10
Dependent Claim
131 words
Plastic tubing that is capable of being electrically connected to ground to prevent accumulation thereon of an electrostAtic charge comprising: a. an elongated tube formed of flexible, dielectric, waterproof plastic material, said member having a substantially uniform continuous exterior wall and, b. an elongated filament having a diameter substantially less than the diameter of said tube formed of flexible, electrically conductive, waterproof plastic material, c. said filament being completely external of said tube and secured to said tube only along a line of tangential contact between the exterior wall of the filament and the exterior wall of the tube whereby said filament may be separated from the tube along any selected length by pulling the filament away from the tube without any substantial disturbance to said exterior wall of the tube.
Claim 11
Dependent Claim
40 words
Plastic tubing of claim 8 wherein said filament is of solid cross section throughout its length and contains 5 to 40 percent by weight of powdered electrically conductive material selected from the group consisting of carbon, copper, silver and aluminum.
Claim 12
Dependent Claim
17 words
Plastic tubing of claim 8 wherein said filament consists of a wire core encased with plastic material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |