Patent ID: 6900795
Filing Date: 2005-05-31
Classification: G06F

Abstract:
1. A unitary lens filter for a responsive display device with associated process control equipment having an internal screen adapted to display process information to facilitate operator control of the process and a sensor adapted to receive operator control input, said lens filter comprising: a front cover anchoring said lens filter to the process control equipment, said front cover defining a central port through which said display device may be observed by the operator; a substantially transparent seamless rear lens filter housed in said central port, said seamless rear lens filter permitting an operator to view process control information shown on said display device; a bezel integral with said seamless rear lens for securing said seamless rear lens to said front cover, said bezel having a periphery extending substantially beyond the periphery of said seamless rear lens and wherein said bezel is formed simultaneously with the formation of said seamless rear lens forming a seamless lens filter shield, and both are formed by molding or forming to form a said lens filter shield impenetrable by high pressure liquids to thereby protect said display device; and, an integral reinforcing lens permitting said sensor to receive operator input therethrough and securing said rear lens periphery to said bezel to stabilize said lens and thereby substantially dissipate any external force including repetitive operator contact to prevent interruption of operator input when the force is inadvertently applied to said rear lens.