US3963856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible, corrugated, plastic tubing having conductive helical bead
Assignee: Steward Plastics Inc
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Filing: 1974-11-25
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Granted: 1976-06-15
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Expires: 1994-11-25
Abstract
Abstract The combination of a flexible, thin-walled plastic tube having thereon an external, electrically conductive, helical bead which is formed of a plastic mixed with a conductive material and which is heat sealed to the plastic of the tube. Electrical conductors are electrically connected to the bead adjacent the ends of the tube. The bead is normally opaque and the tube transparent. However, the tube may also contain a conductive material and be opaque.
Inventors
- 👤 Lennart L. Carlson
- 👤 Douglas I. Hoiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:28
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02; F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; F16L11/118; F16L11/1185; F16L11/12; F16L11/127; F16L25/00; F16L25/01; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/249921; Y10T428/249922; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
In a flexible, corrugated, electrically conductive, plastic tubing, the combination of: a. a flexible, thin-walled synthetic organic plastic tube; b. an electrically conductive, helical bead on and secured to the outer surface of said tube; c. said bead being a flexible synthetic organic plastic having mixed therewith an electrically conductive particulate material; d. said bead, and the outer surface of said tube intermediate the convolutions of said bead, constituting the outer surface of said tubing; and e. the inner surface of said tube constituting the inner surface of said tubing.
Claim 2
Dependent Claim
90 words
In a flexible, corrugated, electrically conductive, plastic tubing, the combination of: a. a flexible, thin-walled synthetic organic plastic tube; b. an electrically conductive, helical bead on and secured to the outer surface of said tube; c. said bead being a flexible synthetic organic plastic having mixed therewith an electrically conductive particulate material; d. said bead, and the outer surface of said tube intermediate the convolutions of said bead, constituting the outer surface of said tubing; and e. the inner surface of said tube constituting the inner surface of said tubing.
Claim 3
Dependent Claim
21 words
A tubing as set forth in claim 1 wherein said bead is heat sealed to the outer surface of said tube.
Claim 4
Dependent Claim
17 words
A tubing as defined in claim 2 wherein said tube is transparent and said bead is opaque.
Claim 5
Dependent Claim
37 words
A tubing as set forth in claim 2 wherein the plastic of said tube also contains an electrically conductive particulate material, but in a smaller proportion than the proportion of electrically conductive particulate material in said bead.
Claim 6
Dependent Claim
17 words
A tubing according to claim 2 wherein said bead is flattened at the ends of the tubing.
Claim 7
Dependent Claim
22 words
The combination set forth in claim 2 including an electrical conductor electrically connected to said bead at one end of the tubing.
Claim 8
Dependent Claim
19 words
The combination defined in claim 6 wherein said conductor is a staple extending through said bead and said tube.
Claim 9
Dependent Claim
19 words
The combination defined in claim 6 wherein said conductor is a clip extending into said bead and said tube.
Claim 10
Dependent Claim
15 words
The combination defined in claim 6 wherein said conductor encloses an end of the tubing.
Claim 11
Dependent Claim
20 words
The combination set forth in claim 9 wherein said conductor is telescoped over a flattened end portion of said bead.
Claim 12
Dependent Claim
19 words
The combination set forth in claim 9 wherein said conductor is threaded on an end portion of said bead.
Claim 13
Dependent Claim
21 words
The combination set forth in claim 2 wherein the conductive material is exposed within at least one end of the tubing.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |