US3699238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible power cable
Assignee: ANACONDA ACQUISITION Co
•
Filing: 1972-02-29
•
Granted: 1972-10-17
•
Expires: 1992-02-29
Abstract
Abstract A flexible power cable for use on mining machines has a central insulated ground check strand comprising conductor wires that are wound around a stretchable tensile core.
Inventors
- 👤 Theodore E Hansen
- 👤 Floyd A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:00
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/182; H01B7/32; H01B9/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A flexible power cable comprising: A. three insulated power current conductors helically stranded together, B. three grounding conductors wound in the interstices of said power current conductors, C. a central insulated ground-check strand comprising, 1. a resiliently stretchable tensile member, 2. a plurality of ground-check wires wound in a short laylength around said member, 3. a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
Claim 2
Dependent Claim
78 words
A flexible power cable comprising: A. three insulated power current conductors helically stranded together, B. three grounding conductors wound in the interstices of said power current conductors, C. a central insulated ground-check strand comprising, 1. a resiliently stretchable tensile member, 2. a plurality of ground-check wires wound in a short laylength around said member, 3. a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
Claim 3
Dependent Claim
13 words
a plurality of ground-check wires wound in a short lay-length around said member,
Claim 4
Dependent Claim
13 words
a plurality of ground-check wires wound in a short lay-length around said member,
Claim 5
Dependent Claim
19 words
The cable of claim 1 wherein said power current conductors, said grounding conductors, and said ground-check wires comprise copper.
Claim 6
Dependent Claim
30 words
The cable of claim 1 wherein said ground-check strand comprises a second plurality of ground-check wires wound around said member, said pluralities of wires being wrapped one over the other.
Claim 7
Dependent Claim
23 words
a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
Claim 8
Dependent Claim
23 words
a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
Claim 9
Dependent Claim
14 words
The cable of claim 1 wherein said tensile member comprises a polyvinyl chloride extrusion.
Claim 10
Dependent Claim
11 words
The cable of claim 1 wherein said tensile member comprises nylon.
Claim 11
Dependent Claim
14 words
The cable of claim 5 wherein said tensile member comprises a plurality of filaments.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |