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US3717391A Expired / Lapsed US ⏱️ 0.0 years remaining

Glass fiber cable, method of making, and its use in the manufacture of track vehicles

Assignee: Norfin International Inc
•
Filing: 1972-03-31
•
Granted: 1973-02-20
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Expires: 1992-03-31
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Abstract

Abstract A coreless glass fiber cable is made of a plurality of individual substantially untwisted glass fiber rovings twisted together. Prior to twisting but during the twisting operation certain of the rovings are impregnated with one component of an elastomeric resin with the remainder of the rovings impregnated with the second component of the elastomeric resin. The impregnated rovings are spirally twisted together in the same direction at substantially the same helical angle, the two components of the elastomeric resin impregnating the rovings mixing with each other at the junction of the intertwining of the rovings to form a cured elastomer spacing the glass fiber rovings and filaments making up the rovings from each other. The layed up glass fiber cable is fed back on itself and subsequent layers of impregnated rovings plied together over the initial layers. The subsequently applied layers are applied at the same helical angle as the initial layer. The cable, although useful for other purposes, is particularly useful in the manufacture of endless track for track vehicles, the endless track comprising a plurality of individual track sections strung along a cable of the type mentioned.

Inventors

  • 👤 D Snellman
  • 👤 W Hudson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 07:52
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/26; B62D55/28; B62D55/24; B62D55/247; B62D55/253; D; D07; D07B; D07B1/00; D07B1/02; D07B1/18; D07B7/00; D07B7/16; D07B7/165

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 101 words
In a track for an endless track vehicle having cables extending circumferentially of the vehicle track and a plurality of individual track sections strung on the cable, the cable being a high tension, low elongation cable, substantially homogeneous in cross-section, made up of a plurality of substantially untwisted rovings twisted together without substantial twisting of the individual filaments making up the rovings, each roving comprising a plurality of filaments coated with an elastomeric sheath, the rovings being spirally twisted together in the same direction under constant tension and at the same helical angle while the elastomer is in the uncured state.
Claim 2
Dependent Claim 101 words
In a track for an endless track vehicle having cables extending circumferentially of the vehicle track and a plurality of individual track sections strung on the cable, the cable being a high tension, low elongation cable, substantially homogeneous in cross-section, made up of a plurality of substantially untwisted rovings twisted together without substantial twisting of the individual filaments making up the rovings, each roving comprising a plurality of filaments coated with an elastomeric sheath, the rovings being spirally twisted together in the same direction under constant tension and at the same helical angle while the elastomer is in the uncured state.
Claim 3
Dependent Claim 19 words
The track of claim 1 including means for each track section for securing the cables to the track section.

References Cited (Backward Citations)

US2770940A Cited
US3029589A Cited
US3029590A Cited
US3062533A Cited
US3063758A Cited
US3371476A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-20 1976-08-21 1977-02-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-20 1980-08-21 1981-02-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-20 1984-08-21 1985-02-20 $7700.00 Window Closed / Lapsed

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