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US 5,315,333 AGranted
Camera lens shield
OwnerMichael Nashinventor
Life of this patent
Estimating the term…
Abstract
Apparatus to spin a glass window in front of a camera lens so as to centrifugally throw off water and dirt. The window rotates in a pair of parallel bearing races at its circumference. Impeller blades between the bearing races spin with the window to force air through the bearings and prevent entry of contamination into the bearing races. The apparatus is mounted directly to the camera to isolate the lens from gyroscopic and vibrational forces.
Claims8
A camera lens shield comprising in combination:
- a generally ring shaped bearing housing;
- bearing means disposed within said bearing housing;
- a generally cylindrical window support means mounted for rotation within said bearing means, said support means having a transparent window therein;
- moving means on said housing adapted to spin said support means fast enough to centrifugally shed contamination from the surface of said window;
- and
- impeller blade means on said support means at a location proximate said bearing means so as to flow air through the bearing means and prevent the entry of contamination into the bearing means.
3 more elements
Dependencies are inferred from the claim text.