초록 ▼

Runway distances are disclosed on sides of translucent truncated pyramids mounted on spaced runway lights. The pyramids have flat tops and two translucent sloped sides with large numerals which face the runway at 120°angles. A rear face has a port with the hinged door for installation and maintenanc

Runway distances are disclosed on sides of translucent truncated pyramids mounted on spaced runway lights. The pyramids have flat tops and two translucent sloped sides with large numerals which face the runway at 120°angles. A rear face has a port with the hinged door for installation and maintenance access. A flat bottom with a central hole completes the pyramid. Sides and bottom are joined by inner and outer riveted angular channels. Anchor plates cover inner corners of the channels. The pyramids are mounted at thousand foot intervals. Cross bars are painted across the runway between opposite pyramids to promote pilots\perception of the indexed distances. Diffusers in the pyramids wash light evenly over the translucent faces for enhanced visibility. Transformers within the pyramids step up voltage to brighten runway lights.

대표청구항 ▼

Visual runway indexing system comprising an indexer having a frame comprising parallel spaced angle pieces with plate edges fixed therebetween, the angle pieces being arranged in a generally triangular base frame and side frames extending upward an inward from apexes of the base frame to a spaced ap

Visual runway indexing system comprising an indexer having a frame comprising parallel spaced angle pieces with plate edges fixed therebetween, the angle pieces being arranged in a generally triangular base frame and side frames extending upward an inward from apexes of the base frame to a spaced apart triangular upper arrangement, and cap means fitted on upper ends of the side frame members for joining the upper ends, translucent side plates mounted between adjacent side frame members and between bottom frame members and the cap, and a rear side plate mounted between adjacent side frame members, completing a closed truncated pyramid shape of the indexer.