Eye protectors
Patent 4670914 Issued on June 9, 1987. Estimated Expiration Date: 
February 19, 2006. 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.
February 19, 2006. 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 2342766 2636171 3000011 3031675 3141172 3418658 3517393 3638240 Defoggable goggles Goggle ventilator InventorAssigneeApplicationNo. 06/830878 filed on 02/19/1986US Classes:2/436, By ventilation of shield2/426GogglesExaminersPrimary: Schroeder, Werner H.Assistant: Ellis, Mary A. Attorney, Agent or FirmInternational ClassA61F 9/02 (20060101)Foreign Application Priority Data1985-02-19 GBAbstractAn eye protector comprising a lens structure spanning a wearers eye in use, a circumambient wall member projecting rearwardly from the lens structure and spacing the lens structure from the wearers face in use while leaving a substantially clear flow path for air across an interior central zone of said eye protector, said wall member having a plurality of ventilation apertures each provided with a rearwardly angled cowl preferably 10 to 20 mm deep and set at from 60° to 90° to the angle of vision and each providing individually a substantially unobstructed ventilation area of at least 80 mm2 e.g. 250 mm2 and in aggregate providing a substantially unobstructed ventilation area of at least 500 mm2 e.g. 1000 mm2 each side of said central zone. | |
