US3672638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow fence
Assignee: Keystone-Seneca Wire Cloth Co
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Filing: 1971-02-03
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Granted: 1972-06-27
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Expires: 1991-02-03
Abstract
Abstract A snow fence made of a woven wire fabric in which the warp wires extend substantially parallel to the ground and the weft wires extend perpendicularly to the ground. The warp wires are arranged in groups which are spaced apart laterally so as to provide a series of vertically spaced horizontally extending slat structures providing a degree of resistance to the flow of wind without totally blocking the flow. The mesh of the slats is selected to permit limited wind flow therethrough and to permit coating of the woven fabric after weaving substantially without bridging of the coating material across the mesh openings.
Inventors
- 👤 William B Krebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
E; E01; E01F; E01F7/00; E01F7/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
269 words
A snow fence comprising a length of wire fabric having warp wires adapted to extend substantially parallel to the ground and weft wires extending substantially perpendicular to the warp wires, said fabric having a plurality of slat portions extending in the warp direction and alternating weftwise with open portions, said weft wires extending parallel to each other throughout the length of the fabric across the full width of the fabric through said slat portions and said open portions, the weft wires having a weft density in the range between 4 wires and 8 wires per inch, the diameter of the weft wires falling within the range of 0.018 and 0.047 inches, the warp wires being disposed parallel entirely within said slat portions and having a warp density therein in the range between 15 and 40 wires per inch, the warp density at the upper and lower edge of each slat portion being greater than in the middle part of each slat portion to provide selvage effects along the opposite marginal edges of each slat portion, the selvages of adjacent slat portions defining the open portions between them, the diameter of said warp wires falling within the range of 0.011 and 0.018 inches, the open portions extending between said slat portions being continuous throughout the length of the fabric, the slat portions comprising at least 50 per cent of the total width of the fabric, said fabric having an integral coating encasing said warp and weft wires without closing the interstices within said slat portions, said coating being effective to anchor said warp and weft wires together at their intersections.
Claim 2
Dependent Claim
269 words
A snow fence comprising a length of wire fabric having warp wires adapted to extend substantially parallel to the ground and weft wires extending substantially perpendicular to the warp wires, said fabric having a plurality of slat portions extending in the warp direction and alternating weftwise with open portions, said weft wires extending parallel to each other throughout the length of the fabric across the full width of the fabric through said slat portions and said open portions, the weft wires having a weft density in the range between 4 wires and 8 wires per inch, the diameter of the weft wires falling within the range of 0.018 and 0.047 inches, the warp wires being disposed parallel entirely within said slat portions and having a warp density therein in the range between 15 and 40 wires per inch, the warp density at the upper and lower edge of each slat portion being greater than in the middle part of each slat portion to provide selvage effects along the opposite marginal edges of each slat portion, the selvages of adjacent slat portions defining the open portions between them, the diameter of said warp wires falling within the range of 0.011 and 0.018 inches, the open portions extending between said slat portions being continuous throughout the length of the fabric, the slat portions comprising at least 50 per cent of the total width of the fabric, said fabric having an integral coating encasing said warp and weft wires without closing the interstices within said slat portions, said coating being effective to anchor said warp and weft wires together at their intersections.
Claim 3
Dependent Claim
20 words
A snow fence according to claim 1 wherein said open portions fall in widthwise dimension between 0.5 and 1.5 inches.
Claim 4
Dependent Claim
22 words
A snow fence according to claim 1 wherein said slat portions in width fall in the range between 0.5 and 1.5 inches.
Claim 5
Dependent Claim
15 words
A snow fence according to claim 1 wherein said warp and weft wires are metallic.
Claim 6
Dependent Claim
18 words
A snow fence according to claim 1 wherein said slat portions comprise a 1 X 1 plain weave.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |