Protective visor, particularly for dentists

Claim 1

An adjustable protective visor, particularly suitable for dentists during dental surgery, adapted for use with a pair of spectacles or a like optical appliance, comprising: a shield of substantially transparent material positionable in front of a wearer's face to cover the eyes and the region of the nose and the mouth at a distance therefrom permitting free breathing to the wearer, said shield having an upper edge; means for supporting said shield in a selected position with respect to the wearer's face; means for removably associating said supporting means with a pair of conventional spectacles; wherein said supporting means comprises a pair of spaced apart bar elements positionable on each side of the wearer's head and a cross supporting member extending transversely to said bar elements, said bar elements being substantially L-shaped with first opposing end portions which extend coaxially to each other and in alignment with said cross supporting member and second end portions which extend rearwardly of and perpendicularly to said first portions in a substantially parallel direction to the spectacle temples, said cross supporting member comprising a unitary elongate body having at least one longitudinal through hole extending between the free ends thereof, said first end portions of said bar elements being frictionally insertable in said free end of said longitudinal hole to connect said bar elements with said cross supporting member, said elongate body further having a first longitudinal groove for firmly engaging therein said shield along said upper edge thereof, and wherein said means for removably associating said supporting means with said pair of spectacles comprise for each bar element at least a pair of longitudinally spaced elastic rings which are frictionally engageable with both said bar element and a respective temple for firmly coupling them in a substantially side-by-side relationship, whereby fitting of said supporting member to any width of spectacle frame can be obtained by inserting at selected depth said second portions of said bar elements into said longitudinal hole of said cross supporting member and whereby adjustment of the distance of said shield from the wearer's face can be achieved by selectively shifting said bar elements with respect to the spectacle temples.