Microscope eyeshield
AssigneeAmerican Optical Corporation
InventorCharles S. Blake
Life of this patent
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Abstract
A microscope eyeshield of flexible material has internal ribs of different diameters. Small diameter ribs frictionally engage small diameter eyepieces while the larger diameter ribs are for larger diameter eyepieces. A groove adjacent each small diameter rib permits the respective small diameter rib to be displaced into the groove when the eyeshield is fitted to a larger diameter eyepiece.
Claims6
An eyeshield adapted for mounting over microscope eyepieces of small and large diameters which comprises, a hollow cylindrical body, said body being formed of a flexible material, a plurality of spaced ribs extending radially inwardly from said body for engaging an eyepiece, one of said plurality of ribs having a first internal diameter chosen to provide frictional engagement with an eyepiece of small diameter, a radial groove in said body adjacent said one of said plurality of ribs, and another of said plurality of ribs having a second internal diameter chosen to provide frictional engagement with an eyepiece of larger diameter, whereby a portion of said one of said plurality of ribs is displaced into said radial groove when the eyeshield is used with a larger diameter eyepiece.
The eyeshield according to claim 7 wherein said body has a thickness and flexibility chosen to permit a portion of said body to be folded back upon another portion of said body.
Dependencies are inferred from the claim text.