Eye protectors
First Claim
1. An 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 whilst 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 and each providing individually a substantially unobstructed ventilation area of at least 80 mm2 and in aggregate providing a substantially unobstructed ventilation area of at least 500 mm2 each side of said central zone.
2 Assignments
0 Petitions
Accused Products
Abstract
An 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.
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Citations
20 Claims
- 1. An 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 whilst 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 and each providing individually a substantially unobstructed ventilation area of at least 80 mm2 and in aggregate providing a substantially unobstructed ventilation area of at least 500 mm2 each side of said central zone.
Specification