US4514585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter and method of manufacturing
Assignee: Dontech Inc
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Filing: 1982-11-18
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Granted: 1985-04-30
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Expires: 2002-11-18
Abstract
Abstract A filter for use in combination with a cathode ray tube screen to transmit light and absorb other types of energy comprises a translucent plastic substrate onto which is applied a wire mesh impregnated with a thin layer of a bonding agent which constitutes one surface of the filter. In manufacturing the filter, a thin layer of the bonding agent is deposited on the topside of a platen, and the mesh is pressed into the bonding agent to cause it to impregnate the mesh. The translucent plastic substrate is placed on the impregnated mesh, and pressure is applied between the substrate and the platen to form a laminate. Thereafter, the laminate is cured and seperated from the platen, after which it may be placed in a mold and formed into a curved shape.
Inventors
- 👤 Richard D. Paynton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:09
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10018; B32B37/00; B32B37/0007; H; H01; H01J; H01J29/00; H01J29/86; H01J29/867; H01J29/868; H05; H05K; H05K9/00; H01J2229/00; H01J2229/863; H01J2229/8633
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
A filter for use in transmitting visible light and absorbing other forms of energy, comprising a translucent substrate, a fine mesh of electrically-conductive filaments disposed on said substrate, a thin layer of bonding agent impregnating said mesh and bonding it to said substrate, said layer of bonding agent constituting a surface of said filter having a peripheral margin, and means along at least a portion of said peripheral margin of said filter providing electrical communication to said filaments.
Claim 2
Dependent Claim
78 words
A filter for use in transmitting visible light and absorbing other forms of energy, comprising a translucent substrate, a fine mesh of electrically-conductive filaments disposed on said substrate, a thin layer of bonding agent impregnating said mesh and bonding it to said substrate, said layer of bonding agent constituting a surface of said filter having a peripheral margin, and means along at least a portion of said peripheral margin of said filter providing electrical communication to said filaments.
Claim 3
Dependent Claim
28 words
The filter according to claim 1 wherein said means providing said electrical communication includes a recess in said bonding agent layer exposing outer peripheral ones of said filaments.
Claim 4
Dependent Claim
18 words
The filter according to claim 2 wherein said recess extends around the entire peripheral margin of said panel.
Claim 5
Dependent Claim
22 words
The filter according to claim 1 wherein said filter has a convex shape with said bonding agent forming the convex surface thereof.
Claim 6
Dependent Claim
47 words
The filter according to claim 1 wherein said filaments have a diameter in a range of about 1.0 to about 5.0 mils., and said layer of bonding agent has a uniform thickness in a range of about 2.5 to about 6.0 mils. to provide said filter surface.
Claim 7
Dependent Claim
27 words
The filter according to claim 1 wherein said substrate is plastic, said filaments are woven of wire mesh, and said bonding agent is a synthetic organic compound.
Claim 8
Dependent Claim
26 words
The filter according to claim 6 wherein said plastic includes an acrylic polymer, said wire mesh is of copper, and said bonding agent includes a polyurethane.
Claim 9
Dependent Claim
25 words
The filter according to claim 1 wherein said filaments are of metal wires woven together into a fabric of about 50 to about 300 mesh.
Claim 10
Dependent Claim
27 words
The filter according to claim 8 wherein said wires include at least one of the following metals: beryllium-copper, monel, tin, iron, tungsten, stainless steel and alloys thereof.
Claim 11
Dependent Claim
14 words
The filter according to claim 9 wherein said metal wires have a blackened coating.
Claim 12
Dependent Claim
25 words
The filter according to claim 1 wherein said substrate is fabricated of at least one of the following plastics: acrylics, polycarbonates, butyrates, vinyls, and nylons.
Claim 13
Dependent Claim
18 words
The filter according to claim 1 wherein said bonding agent includes a polyurethane having a photo-initiated curing agent.
References Cited (Backward Citations)
US3126440A
Cited
US2674644A
Cited
US2875435A
Cited
US2977412A
Cited
US3030435A
Cited
US3305623A
Cited
US3265804A
Cited
US3431348A
Cited
US4008383A
Cited
US4010343A
Cited
US4037009A
Cited
US4163821A
Cited
US4253737A
Cited
US4253737B1
Cited
US4247737A
Cited
US4264800A
Cited
US4381421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |