US3644866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tightly bound bundle of filaments and method of producing same
Assignee: Owens Corning
•
Filing: 1971-01-11
•
Granted: 1972-02-22
•
Expires: 1991-01-11
Abstract
Abstract This invention relates to a tightly bound textile strand product suitable for use as a core element in a jacketed composite product in which coated filaments are held together by helically wrapping two separate strands of filaments around the bundle in opposite directions. More particularly, it relates to an improved high-resistance automotive ignition conductor and a method of producing the conductor wherein the overwrapping strands are glass filaments and the ignition conductor is a bundle of glass filaments coated with electrically conductive material.
Inventors
- 👤 Lawrence R Deardurff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/38; D02G3/385; H; H01; H01B; H01B7/00; H01B7/0063; H01C; H01C17/00; H01C17/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936; Y10T428/2938; Y10T428/2964
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A core element for processing through a jacketing orifice in forming a jacketed composite product, comprising a bundle of filaments, a coating of functional particles secured to said bundle of filaments, a double overwrap comprising two strands of filaments helically wrapped about said bundle of filaments in opposite directions to each other, said functional particles of said coating being held in a stable functional relation by said double overwrap and said double overwrap imparting a uniformity of outer dimension for smooth passage through a jacketing orifice.
Claim 2
Dependent Claim
133 words
An electrically conductive element suitable for applying an insulating jacket while passing the element through a die, comprising a bundle of continuous glass filaments coated with a coating material including an electrically conductive material, a first overwrap of a plurality of continuous glass filaments helically wrapped around said bundle of coated filaments in one direction, a second overwrap of a plurality of continuous glass filaments helically wrapped around said bundle of coated filaments in a direction opposite to said direction of said first overwrap, said first and second overwrap being wrapped about said bundle a sufficient number of turns along its length to hold said bundle together tightly enough to maintain substantially unimpaired the electrical conductivity of said coating and to impart a uniformity of outer dimension for smooth passage through said die.
Claim 3
Dependent Claim
147 words
A high resistance electrical conductor such as for use in the ignition system of internal combustion engines comprising a bundle of glass filaments coated with a coating material including carbonaceous electrically conductive material distributed throughout the coating and imparting electrical conductivity to the bundle, a first overwrap of glass filament yarn helically wound over said bundle of coated filaments in one direction, a second overwrap of glass filament yarn helically wound in close engaging relation over said bundle of coated filaments in a direction opposite to said direction of said first overwrap in snug engaging relation thereover, and an insulating jacket surrounding said bundle of coated filaments and said first and second overwrap contiguous with said bundle and overwraps to exclude air pockets between said jacket and said bundle, said first and second overwraps holding said bundle of coated filaments together in stable uniform electrically conductive relation.
Claim 4
Dependent Claim
18 words
A high resistance electrical conductor as defined in claim 4 wherein said insulating jacket is of elastomeric material.
Claim 5
Dependent Claim
18 words
A high resistance electrical conductor as defined in claim 4 wherein said insulating jacket is of neoprene material.
Claim 6
Independent Claim
117 words
The method of manufacturing a core element for processing through a jacketing orifice in forming a jacketed composite product, comprising the steps of: coating a bundle of substantially aligned filaments with a liquid coating material, the coating on said filaments being sufficient in quantity to provide a matrix for said bundle; heating said bundle of coated filaments to secure the coating material thereto; helically wrapping first and second pluralities of filaments about said bundle of coated filaments in opposite directions to each other, each said plurality being wrapped a sufficient number of turns along the length of said bundle to maintain said matrix material intact upon passage through a jacketing orifice and assure uniform smooth passage therethrough.
Claim 7
Independent Claim
136 words
The method of manufacturing a core element for processing through a jacketing orifice in forming a jacketed composite product, comprising the steps of: coating a bundle of substantially aligned filaments with a liquid coating, the coating on said filaments being sufficient in quantity to provide a matrix for said bundle upon drying; helically wrapping first and second pluralities of filaments about said bundle of coated filaments in opposite directions to each other, each said plurality being wrapped a sufficient number of turns along the length of said bundle to maintain said matrix material intact upon passage through a jacketing orifice and assure uniform smooth passage through the jacketing orifice; heating said bundle of coated filaments to secure the coating material to the filaments of said bundle and to said first and second pluralities of overwrapped filaments.
Claim 8
Independent Claim
122 words
The method of manufacturing an electrically conductive element suitable for applying an insulating jacket while passing the element through a jacketing die, comprising the steps of passing a bundle of substantially aligned glass filaments through a liquid containing carbonaceous electrically conductive particles therein whereby the bundle of glass filaments is coated therewith, heating the bundle of coated filaments to dry the coating and to adhere the conductive particles to the filaments, and helically wrapping first and second pluralities of glass filaments about said bundle of coated filaments in opposite directions to each other to present a uniform outer dimension for smooth snag-free passage of said element through said jacketing die and to maintain said conductive particles in stable uniform electrically conductive relation.
Claim 9
Independent Claim
129 words
The method of making a high resistance electrical conductor such as for use in the ignition system of internal combustion engines, comprising the steps of: coating a plurality of glass filaments with a coating material including electrically conductive material; heating said plurality of coated filaments to dry said coating material and adhere said electrically conductive material to said filaments; overwrapping first and second yarns of glass filaments helically around said plurality of coated glass filaments in opposite directions to each other to present a uniform outer dimension for smooth snag-free passage of the overwrapped bundle through a jacketing extrusion die and to mAintain stable uniform electrical conductivity of the conductor; passing said overwrapped bundle through a jacketing extrusion die to apply a covering jacket of electrical insulating material thereto.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |