Frameless goggle and method of making the same
US4571748A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Jan 24, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C11/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A frameless goggle construction including an elongated lens structure having opposed ends formed of a generally planar, semi-rigid, transparent sheet of plastic deformed about its minor dimension to be configured as a simple curve with convex and concave sides. The sheet rigidity is such that the lens structure may flex to move the ends closer to or further from each other and the periphery of the concave side mounts a layer of soft resilient cushioning material of substantial thickness adapted for cushioned contact with and conformance to the face of a wearer of a goggle. An elongated strap is connected to the ends of the lens structure to secure the goggle to the head of the wearer and to provide a face conforming force to the lens. The lens structure is antifogging and formed of a non-rigid spacer sandwiched between inner and outer lenses with air flow passages formed in the spacer and inner lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.