US3591864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonfog goggles
Assignee: Individual
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Filing: 1969-05-27
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Granted: 1971-07-13
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Expires: 1989-05-27
Abstract
Abstract Nonfogging goggles for skiers or the like that includes a pair of spaced apart lenses having a dead air space therebetween and a dehumidifier in the form of a tightly woven wire mesh portion made of a flexible metal of high thermoconductivity.
Inventors
- 👤 Jon Ivor Allsop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:08
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/028; A61F9/029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
In nonfog goggles for skiers and the like comprising a frame and embodying a face engaging portion having a recessed nose engaging section, a support portion arranged in spaced apart relation with respect to said face engaging portion, said goggles further including spaced crosspiece means interconnecting the body portion and support, a double lens embodying a pair of transparent members sealed together at their outer peripheries and mounted in said support portion, there being a dead air space between the transparent members, said double lens having a compound curvature, a flexible tightly woven wire mesh of high thermoconductivity in the frame the support portion and body portion, said mesh being tightly woven to keep snow out but loose enough so that moisture that condenses on the wire mesh can escape to the ambient air and wherein air can ventilate inwardly through the mesh, said double lens having very dry air trapped therein to prevent the lens fogging.
Claim 2
Dependent Claim
157 words
In nonfog goggles for skiers and the like comprising a frame and embodying a face engaging portion having a recessed nose engaging section, a support portion arranged in spaced apart relation with respect to said face engaging portion, said goggles further including spaced crosspiece means interconnecting the body portion and support, a double lens embodying a pair of transparent members sealed together at their outer peripheries and mounted in said support portion, there being a dead air space between the transparent members, said double lens having a compound curvature, a flexible tightly woven wire mesh of high thermoconductivity in the frame the support portion and body portion, said mesh being tightly woven to keep snow out but loose enough so that moisture that condenses on the wire mesh can escape to the ambient air and wherein air can ventilate inwardly through the mesh, said double lens having very dry air trapped therein to prevent the lens fogging.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |