Radiant energy – Radiant energy generation and sources
Patent
1997-04-15
1998-11-24
Nguyen, Kiet T.
Radiant energy
Radiant energy generation and sources
362 16, G03B 1502
Patent
active
058411461
ABSTRACT:
An umbrella Reflector comprising a bearing body into which a tubular carrying element is inserted so that it is displaceably held within the bearing body, a ring of articulated joints arranged on the bearing body by elements of which articulated joints umbrella stretchers are hinged on said bearing body to which umbrella stretchers a reflecting umbrella covering is fastened, a sliding element being displaceable on the tubular carrying element on which sliding means a ring of toggle joints is arranged to which expanding stretchers are mounted, the end of which expanding stretchers pointing to the umbrella covering and including articulated expanding joints is secured to the umbrella stretchers, the expanding stretchers being dimensioned so that for opening the reflector the sliding element, contrary to the restoring forces becoming effective during expansion of the umbrella stretchers, is displaceable approximately up to the plane of said articulated expanding joints or beyond bearing body into an open position providing an arrestment, and an element emitting electromagnetic or acoustic waves which is arranged at the end of the tubular carrying element facing the interior of the umbrella-type reflector so that by displacing the tubular carrying element within the bearing body element can be moved into different positions in relation to the opened reflector.
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