Solar controlled sun tracker for a sunbather
Patent 5211172 Issued on May 18, 1993. Estimated Expiration Date: 
March 29, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 29, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3908666 Ultraviolet light control Revolving solar lounger Recreational apparatus Method and apparatus for multiplexed dipole/quadrupole for stimulation/sensing Rotating platform for sunbathers Tanner's platform Chair for sunbathing Tanning pod Patent #: 4989600 InventorsApplicationNo. 677235 filed on 03/29/1991US Classes:607/95, Solar (Natural) light applicator297/217.3, With electrical feature297/217.7Mounted on accommodating platform (e.g., stairs, deck, etc.)ExaminersPrimary: Harrison, Jessica J.Attorney, Agent or FirmInternational ClassA61H 033/06AbstractApparatus for rotating a sunbather's lounge chair in the sun so that the sunbather lying on the chair is exposed to the sun even while the sun direction changes from sunrise to sunset includes a sun direction detector for detecting the relative direction of the sun direct rays to the chair and produces electrical signals representative of that relative direction, the chair being carried on a rotatable platform driven clockwise (CW) or counterclockwise (CCW) as requires to position the lounge chair in the direct rays of the sun; the sun direction detector including two directional photo-detectors on the rotatable platform, held with their directions normal to generally upright planes that meet at an angle less than 180°, and the drive driving the platform to maintain the outputs of the photo-detectors equal or in a predetermined relationship. | |
