They Invented What? (No. 14)
U.S. Pat. No. 4,805,654: Motor vehicle sunshields and sunshield making methods.
1. A sun shield for automobiles comprising: a main rod, one end portion of which has a joint fixed thereon, the rod having three runners slidably sleeved thereon, said runners herein being referred to as first runner, second runner and third runner according to their position relative to the joint, between the joint and the second runner having locking means mounted on the rod for detachably locking the first runner; a plurality of main ribs radially extended from the axis of the main rod, each main rib being assembled from at least two sub-units which are slidably and stretchably telescoped on one another, one end of each main rib being hinged in said joint, the other end of the same herein being referred to as free end; a plurality of auxiliary ribs correspondingly mounted with the main ribs, one end of each auxiliary rib being hinged in said first runner, the other end of the same being hinged in a corresponding main rib; at least three legs isometrically extended from the axis of said main rod, one end of each leg being hinged in said second runner, the other end of the same having a sucker hinged thereon; at least three supporting ribs correspondingly mounted with the legs, one end of each supporting rib being hinged in said third runner, the other end of the same being hinged in the corresponding leg; and a flexible cloth disposed over the main ribs which is fixed at its periphery to the free ends of said main ribs, the size of said cloth being capable of entirely covering the main ribs while the main ribs are in a stretched state.
2. A sun shield as claimed in claim 1, wherein each sucker comprises a suction mat adapted to adhere to the roof surface of an automobile, a retrievable rod, one end of which is fixed in the central portion of the mat, and a grip attached in the other end of the retrievable rod for pulling the central portion of the mat by means of the retrievable rod.
3. A sun shield as claimed in claim 1, wherein each sucker comprises a magnet by which the sun shield can be made to attract to the roof of a car.
4. A sun shield as claimed in claim 1, wherein the main rod comprises an upper portion which is assembled with said main ribs and said auxiliary ribs, and a lower portion which is assembled with said legs and said supporting ribs, said lower portion being formed as a hollow post and said upper portion being slidably telescoped within the lower portion.