US3716138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen
Assignee: Hoyt Wire Cloth Co
•
Filing: 1970-05-13
•
Granted: 1973-02-13
•
Expires: 1990-05-13
Abstract
Abstract A vibrating screen woven with wire having an elliptic or oval cross section with a vertical dimension substantially greater than the horizontal dimension. In the manufacture of the screen, the individual wires are crimped prior to weaving so as to control the size of the openings provided by the interstices of the weave. The openings may have an outline which is square, rectangular (normally called oblong), or a combination (normally called long-slot) combining elongated rectangular openings with square openings.
Inventors
- 👤 A Lumsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:35
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4672; B01; B01D; B01D39/00; B01D39/10; B01D39/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
212 words
For use in vibrating screens, wire cloth screening composed of warp wires and weft wires interwoven to produce an integral wire cloth structure, said warp wires and weft wires being crimped to provide upper and lower pre-formed knuckles, the upper knuckles of the warp wires being nested in the lower knuckles of the weft wires, and vice versa, the height of the crimps being equal in the warp and the weft wires so that the upper surface of said screening provides coplanar upper knuckles of said warp wires and said weft wires, the cross section of each of said wires having arcuate upper and lower surfaces and at least two flat side walls intermediate said arcuate upper and lower surfaces and being of uniform dimension throughout without notches, the flat side walls of adjacent weft wires being disposed in spaced relation to define the length dimension the mesh openings therebetween, and the flat side walls of adjacent warp wires being disposed in spaced parallel relation to define therebetween the transverse dimension of the mesh openings, the height dimension of said wire cross section being between one and four wire sizes larger than the width dimension of the wire cross section in both the warp wires and the weft wires of the screen.
Claim 2
Dependent Claim
212 words
For use in vibrating screens, wire cloth screening composed of warp wires and weft wires interwoven to produce an integral wire cloth structure, said warp wires and weft wires being crimped to provide upper and lower pre-formed knuckles, the upper knuckles of the warp wires being nested in the lower knuckles of the weft wires, and vice versa, the height of the crimps being equal in the warp and the weft wires so that the upper surface of said screening provides coplanar upper knuckles of said warp wires and said weft wires, the cross section of each of said wires having arcuate upper and lower surfaces and at least two flat side walls intermediate said arcuate upper and lower surfaces and being of uniform dimension throughout without notches, the flat side walls of adjacent weft wires being disposed in spaced relation to define the length dimension the mesh openings therebetween, and the flat side walls of adjacent warp wires being disposed in spaced parallel relation to define therebetween the transverse dimension of the mesh openings, the height dimension of said wire cross section being between one and four wire sizes larger than the width dimension of the wire cross section in both the warp wires and the weft wires of the screen.
Claim 3
Dependent Claim
212 words
For use in vibrating screens, wire cloth screening composed of warp wires and weft wires interwoven to produce an integral wire cloth structure, said warp wires and weft wires being crimped to provide upper and lower pre-formed knuckles, the upper knuckles of the warp wires being nested in the lower knuckles of the weft wires, and vice versa, the height of the crimps being equal in the warp and the weft wires so that the upper surface of said screening provides coplanar upper knuckles of said warp wires and said weft wires, the cross section of each of said wires having arcuate upper and lower surfaces and at least two flat side walls intermediate said arcuate upper and lower surfaces and being of uniform dimension throughout without notches, the flat side walls of adjacent weft wires being disposed in spaced relation to define the length dimension the mesh openings therebetween, and the flat side walls of adjacent warp wires being disposed in spaced parallel relation to define therebetween the transverse dimension of the mesh openings, the height dimension of said wire cross section being between one and four wire sizes larger than the width dimension of the wire cross section in both the warp wires and the weft wires of the screen.
Claim 4
Dependent Claim
212 words
For use in vibrating screens, wire cloth screening composed of warp wires and weft wires interwoven to produce an integral wire cloth structure, said warp wires and weft wires being crimped to provide upper and lower pre-formed knuckles, the upper knuckles of the warp wires being nested in the lower knuckles of the weft wires, and vice versa, the height of the crimps being equal in the warp and the weft wires so that the upper surface of said screening provides coplanar upper knuckles of said warp wires and said weft wires, the cross section of each of said wires having arcuate upper and lower surfaces and at least two flat side walls intermediate said arcuate upper and lower surfaces and being of uniform dimension throughout without notches, the flat side walls of adjacent weft wires being disposed in spaced relation to define the length dimension the mesh openings therebetween, and the flat side walls of adjacent warp wires being disposed in spaced parallel relation to define therebetween the transverse dimension of the mesh openings, the height dimension of said wire cross section being between one and four wire sizes larger than the width dimension of the wire cross section in both the warp wires and the weft wires of the screen.
Claim 5
Dependent Claim
30 words
Woven wire screening according to claim 1 wherein the mesh openings in said screen are square, the upper and lower knuckles in each wire, both weft and warp, being contiguous.
Claim 6
Dependent Claim
49 words
Woven wire screening according to claim 1 wherein said mesh openings are rectangular in form, the upper and lower knuckles of the weft wires being contiguous, and selected upper and lower knuckles of the warp wires being spaced apart by an elongated intermediate run to define a rectangular opening.
Claim 7
Dependent Claim
28 words
Woven wire screening according to claim 3 wherein said weft wires are grouped in groups of three, said elongated ruNs being disposed intermediate the groups of weft wires.
Claim 8
Dependent Claim
36 words
Screening according to claim 3 wherein the upper knuckles of said crimped warp and weft wires project above the intermediate runs, and the lower knuckles of said warp and weft wires project below the intermediate run.
Claim 9
Dependent Claim
44 words
Screening according to claim 3 wherein the upper knuckles of said warp and weft wires are substantially coplanar with said intermediate runs and said lower knuckles of the warp and weft wires project below said intermediate runs whereby said screen has a ''''smooth-top'''' appearance.
Claim 10
Dependent Claim
26 words
Screening according to claim 1 wherein said woven screen cloth includes angle elements extending along opposite edges thereof for anchoring said screen into vibrating screen apparatus.
References Cited (Backward Citations)
CA576939A
Cited
GB189812140A
Cited
US1078380A
Cited
US1403742A
Cited
US1767814A
Cited
US1920972A
Cited
US2008448A
Cited
US2271662A
Cited
US2874730A
Cited
US2926785A
Cited
US3266130A
Cited
US3545705A
Cited
US3473576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |