Landing gear lever knob

Claim 1

An aircraft cockpit-mounted control mechanism including a first, operating handle-lever member for direct attachment with, and actuation of a selected aircraft system; and a second, glareproof, manually operable control member attached to said first, operating handle-lever member and adjustable to one or more operating positions by a pilot, copilot or other aircrew member; said second, manually operable control member being adapted for housing therewithin one or more concealed warning lights, and comprising: first, relatively thin, outer cover layer means of linear light-polarizing material for transmitting plane-polarized light therethrough from the initial impingement thereon of ambient light found in the aircraft cockpit in which mounted and normally forming a glare condition; and second, inner and relatively thick, main control member-base support means inwardly disposed of, and in integral supporting contact throughout its entire circumference with said first, relatively thin and linear light-polarizing, outer cover layer means, and being composed of a united and matching pair of oppositely disposed and oppositely oriented, circular light-polarizing, control member-portions respectively left and right-circularly polarizing, and thereby absorbing and prohibiting any further transmission of the planepolarized light being initially transmitted thereto by said first, outer cover layer means, and thus eliminating a substantial portion of the ambient light normally causing a glare condition tending to obscure the otherwise clearly visible illumination from the concealed warning lights.