Protective goggle and lens with adjustable ventilation
Patent 5542130 Issued on August 6, 1996. Estimated Expiration Date: 
October 28, 2014. 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.
October 28, 2014. 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 1588775 2537275 3395406 3444561 3517393 3663959 3718937 Goggle and accessories therefor Protective device having a shield for protecting the face of a user Vented helmet and face shield InventorsAssigneeApplicationNo. 330897 filed on 10/28/1994US Classes:2/436, By ventilation of shield2/441Detachable lens-mountingExaminersPrimary: Nerbun, PeterAttorney, Agent or FirmForeign Patent References
International ClassA61F 009/02AbstractA ventilation adjustment assembly is provided for a goggle having a ventilated lens mounted in a frame. In one embodiment, the lens has one or more ventilation apertures forming a linear or curved path. An elongated shutter housing is formed by a base having pair of parallel sidewalls or spacers mounted on the lens on opposite sides of and in close proximity to the path of lens apertures. One or more apertures on the base align with the lens apertures. An elongated shutter is slidably disposed in the shutter housing. The shutter has one or more apertures which are alignable with apertures in the base and lens. By sliding the shutter within its housing, ventilation air flow is regulated as the shutter apertures move in and out of alignment with the base and lens apertures.Other References
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