Patent US3697241A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3697241A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for providing controlled quench in the manufacture of fiber glass

Assignee: PPG Industries Inc
•
Filing: 1969-01-14
•
Granted: 1972-10-10
•
Expires: 1989-01-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Disclosed herein are methods and apparatus for controlling the quench of glass fibers as they are extruded. A fluid, such as air, is caused to flow evenly with controlled impingement at the roots of fibers as they are being extruded from a bushing, and/or a controlled temperature environment is provided along the extruding cone of fibers. With either or both approaches small fibers with greatly reduced breakage can be produced. Several embodiments of the present concepts are disclosed wherein a manifold device is used at the bushing to provide a controlled even flow of air at the roots of the extruding fibers, and wherein a chamber may be used along a length of the drawn fibers to provide a controlled environment and to reduce the stress in such fibers during attenuation.

Inventors

  • 👤 Edward T Strickland
  • 👤 Homer C Amos

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 07:18
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0213

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

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) 1975-10-10 1976-04-10 1976-10-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-10 1980-04-10 1980-10-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-10 1984-04-10 1984-10-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag