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Device for controlling the incidence of heat and light radiation, particularly for greenhouses and the like

  • US 4,128,307 A
  • Filed: 06/20/1977
  • Issued: 12/05/1978
  • Est. Priority Date: 06/22/1976
  • Status: Expired due to Term
First Claim
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1. A device for controlling the incidence of heat and light radiation on a growing area within greenhouses and the like comprising a plurality of slats of a non-self-supporting material arranged in parallel but side-by-side spaced relationship as in a Venetian blind, opposing pairs of means for supporting opposite ends of said slats and for tilting said slats about their longitudinal axes to open or close the slats, and means for rotating the opposing tilting means in synchronism, said tilting means including clamping means for contacting the opposite ends of each slat so as to maintain said slat in a substantially planar configuration, and tension means associated with each pair of tilting means to maintain the slat in tension as it rotates during the synchronous rotation of said opposing tilting means.

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