US3876404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for reducing tension and traversing glass fiber strand
Assignee: PPG Industries Inc
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Filing: 1974-03-27
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Granted: 1975-04-08
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Expires: 1994-03-27
Abstract
Abstract A method and apparatus for reducing the tension of continuous glass fiber strand is disclosed. The apparatus is composed of a traveling surface rotating about an axis. The surface has a plurality of tracks of variable lengths running oblique to the axis of rotation of the surface. The termination point of the track on the traveling surface is also the point of origin of a subsequent track, thus a continuous irregular path is defined by the tracks. The tracks are determined by a plurality of contact points on which the glass fiber strand engages. The surface travels at a slightly greater linear speed than the take-up winder thus reducing the tension of the strand on the glass fiber strand package. Additionally, the surface may be reciprocally traversed the length of the take-up package or alternatively the take-up package can be traversed to obtain a random wind of glass fiber strand.
Inventors
- 👤 Warren W Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:20
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B; B65; B65H; B65H59/00; B65H59/10; B65H59/18; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10S; Y10S242/00; Y10S242/92
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
A glass strand traversing apparatus for depositing a strand on a forming package comprising: a pair of plate members, a plurality of spaced transversely extending supporting members secured to the opposing faces of said plates, said supporting members each having an inwardly depressed portion which lie upon and define a nonuniform undulating path between said supporting members to provide a rotatable support for said strand.
Claim 2
Dependent Claim
65 words
A glass strand traversing apparatus for depositing a strand on a forming package comprising: a pair of plate members, a plurality of spaced transversely extending supporting members secured to the opposing faces of said plates, said supporting members each having an inwardly depressed portion which lie upon and define a nonuniform undulating path between said supporting members to provide a rotatable support for said strand.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein said supporting members are wire members.
Claim 4
Dependent Claim
11 words
The apparatus of claim 1 wherein said plate members are annular.
Claim 5
Dependent Claim
36 words
The apparatus of claim 3 wherein said supporting members are a plurality of wires mounted parallel to the axis of rotation of said annular plate members, said wires being supported by apertures in said annular plate.
Claim 6
Dependent Claim
117 words
In the method of forming a continuous glass fiber strand comprising drawing fine glass fibers from molten cones of glass at a bushing by attenuation, applying to said fibers during formation an aqueous sizing composition, gathering said fibers into strands, traversing the strands across a reciprocating path, winding said glass fiber strands on a winder, the improvement comprising pulling said strands with a plurality of spaced transversely extending supporting members secured to the opposing faces of a pair of annular plate members, said supporting members each having an inwardly depressed portion which lie upon and define a nonuniform undulating path between said supporting members, said pulling step being interposed between said gathering step and said winding step.
Claim 7
Dependent Claim
117 words
In the method of forming a continuous glass fiber strand comprising drawing fine glass fibers from molten cones of glass at a bushing by attenuation, applying to said fibers during formation an aqueous sizing composition, gathering said fibers into strands, traversing the strands across a reciprocating path, winding said glass fiber strands on a winder, the improvement comprising pulling said strands with a plurality of spaced transversely extending supporting members secured to the opposing faces of a pair of annular plate members, said supporting members each having an inwardly depressed portion which lie upon and define a nonuniform undulating path between said supporting members, said pulling step being interposed between said gathering step and said winding step.
Claim 8
Dependent Claim
19 words
The method of claim 5 including traversing said strand across the surface of said winder during said pulling step.
Claim 9
Dependent Claim
83 words
In the method of forming continuous glass fiber strand comprising drawing fine fibers from molten cones of glass at a bushing by attenuation, applying to said fibers during formation an aqueous sizing composition, gathering said fibers into strand and collecting said fibers, the improvement comprising applying a plurality of pulling forces simultaneously at discrete points along said strand while imparting an undulating path of travel to said strands, said plurality of pulling forces being applied between said gathering step and said collecting step.
Claim 10
Dependent Claim
83 words
In the method of forming continuous glass fiber strand comprising drawing fine fibers from molten cones of glass at a bushing by attenuation, applying to said fibers during formation an aqueous sizing composition, gathering said fibers into strand and collecting said fibers, the improvement comprising applying a plurality of pulling forces simultaneously at discrete points along said strand while imparting an undulating path of travel to said strands, said plurality of pulling forces being applied between said gathering step and said collecting step.
Claim 11
Dependent Claim
13 words
The method of claim 7 wherein said collecting step is accomplished by winding.
Claim 12
Independent Claim
65 words
A method of forming glass fiber strand comprising: attenuating glass fiber filaments from molten cones of glass, applying an aqueous sizing composition to said filaments, gathering said filaments into strand, applying simultaneously, a plurality of pulling forces to said strand at discrete points along said strand, applying a last pulling force to said strand, subsequent to said plurality of pulling forces and collecting said strand.
Claim 13
Independent Claim
65 words
A method of forming glass fiber strand comprising: attenuating glass fiber filaments from molten cones of glass, applying an aqueous sizing composition to said filaments, gathering said filaments into strand, applying simultaneously, a plurality of pulling forces to said strand at discrete points along said strand, applying a last pulling force to said strand, subsequent to said plurality of pulling forces and collecting said strand.
Claim 14
Dependent Claim
13 words
The method of claim 9 wherein said last pulling force is a winder.
Claim 15
Dependent Claim
18 words
The method of claim 9 wherein said last pulling force is greater than said plurality of pulling forces.
Claim 16
Dependent Claim
18 words
The method of claim 9 wherein said last pulling force is less than said plurality of pulling forces.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |