Optical stack of laminated removable lenses for face shields, windows, and displays
Patent 6847492 Issued on January 25, 2005. Estimated Expiration Date: 
May 13, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 13, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2511329 3785102 Method of and means for shielding the lens of a face mask 4090464 Face shield protective system and apparatus Process for restoration of clear plastic Plastic surface treatment Adhesive device of felt substrate, release sheet and adhesive and method Tear-off lens system and method for goggles Pad forming method InventorsApplicationNo. 10845228 filed on 05/13/2004US Classes:359/642, LENS2/15, Eye shields (e.g., hoodwinks or blinds, etc.)2/424And faceExaminersPrimary: Mack, RickyAttorney, Agent or FirmInternational ClassesG02B 300A61F 900 AbstractA stack of laminated transparent lenses consists of two alternating optically clear materials in intimate contact. The materials are a plastic lens and clear adhesive. The adhesive is uninterrupted. The lens and the adhesive have refraction mismatch of less than 0.2. A tab portion is part of each lens acts as an aid in peeling away the outermost lens after contamination of the lens layer during racing conditions. The lens stack can be mounted to the posts on the face shield or laminated directly to a windshield.Field of SearchMultilayer filter or multilayer reflectorSuperimposing visual information on observer`s field of view (e.g., head-up arrangement, etc.) Including curved reflector LENS By limited-view opening Goggles And wide-angle lens Having lens-cover plate Having antifog shield or lens Having antiglare shield or lens Eye shields (e.g., hoodwinks or blinds, etc.) Hand or body supported And detachable face plate Spectacle attachments Shades And face Sport headgear Included in shield for eyes With seal for face Included in shield for face Hat or cap attachments With antiglare or shading Removable and/or adjustable filters or screens (e.g., clip-on type) Protective layer | |
