Patent ID: 7976154
Filing Date: 2011-07-12
Classification: G02C

Abstract:
1. A protection member for providing a temporary protection of a spectacle arm against chemical agents, comprising: an elongate tubular casing having at least one open end for arranging said elongate tubular casing on said spectacle arm, formed of plastics material which is impermeable with respect to chemical treatment agents, and having a cross-section over an entire length thereof such that said spectacle arm is not compressed and space remains around said spectacle arm, thereby facilitating an introduction of said spectacle arm into said elongate tubular casing; wherein said elongate tubular casing has a length to cover at least a largest portion of said spectacle arm; and wherein said spectacle arm being a crook-like spectacle arm having a bend and said elongate tubular casing having a substantially planar shape in a plane of said crook-like spectacle arm such that said elongate tubular casing can be arranged on said crook-like spectacle arm; and a folding device for preferential folding about a transverse axis at a location corresponding to a position of said bend of said crook-like spectacle arm for reducing, at said location, a distance between an inner edge of said bend of said crook-like spectacle arm and an edge of said protection member arranged at a side of an interior of said bend.