×

Solar tracking device

  • US 4,304,221 A
  • Filed: 10/19/1978
  • Issued: 12/08/1981
  • Est. Priority Date: 07/11/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. Solar energy conversion apparatus comprising concentrating means carried in a support structure for concentrating solar energy onto at least one surface, tracking means including first and second elongate metallic members which are disposed relative to the concentrating means to be differentially heated by the concentrated solar energy when the concentrating means is misaligned with the sun, the differential heating of said metallic members producing differential thermal linear expansions thereof and drive means for producing tracking movements of said concentrating means in response to said differential linear expansions of said metallic members, one end of each of said members being resiliently connected to said support structure.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×