Patent ID: 6170498
Filing Date: 2001-01-09
Classification: A45B

Abstract:
An automatic umbrella comprising:a central shaft means including a tubular lower shaft which has a lower portion engaged with a grip and is telescopically engageable with an inside wall of a tubular first middle shaft, a tubular second middle shaft telescopically engageable with an outside wall of the first middle shaft, and a tubular upper shaft telescopically engageable with an outside wall of the second middle shaft, the upper shaft having an inner block inserted at a top end thereof; the inner block having a groove formed at a top surface, a through hole formed in a center of the groove and an upper notch mounted above the top thereof;a rib assembly including a plurality of top ribs, stretcher ribs, inner connections ribs and middle ribs pivotally engaged with each other and pivotally engaged with the upper notch and a lower runner for holding an umbrella cloth thereon;an extending spring held inside the upper, the middle and the lower shafts surrounding a center guide tube which has a top end engaged with a lower end of the inner block, and having a top spring end making contact with a lower end of the inner block and a bottom spring end engageable with a top rim of a lower control tube located in the lower shaft for opening the umbrella;a plurality of retracting springs engageable with the rib assembly for restoring, retracting and closing the umbrella; anda control means including a push button movably located in the grip, an umbrella opening means movable by the push button for opening the umbrella, and an umbrella closing means movable by the push button for closing the umbrella;wherein the top surface of the inner block has a rope guide disposed thereon, the rope guide is made of lower friction coefficient and high wearing resistance material and has arcuate front and rear grooves and a center hole for a rope to slide over.