US4439020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunrays focusing apparatus
Assignee: Nihon Chemical Plant Consultant Co Ltd
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Filing: 1982-02-09
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Granted: 1984-03-27
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Expires: 2002-02-09
Abstract
Abstract A sunrays focusing apparatus for obtaining highly condensed solar energy. The apparatus includes a first trough-shaped parabolic reflector mounted for rotation about both vertical and horizontal axes. A first elongated refractor is mounted to the first parabolic reflector along or adjacent to the focal axis of the first parabolic reflector. A second trough-shaped parabolic reflector is also mounted to the first parabolic reflector in such a way that focal axes of both first and second parabolic reflectors are disposed at right angles to each other. A second reflector is mounted to the first parabolic reflector along or adjacent to the focal axis of the second parabolic reflector. Mounted on the second parabolic reflector is a sun tracking device responsive to sunrays for directing the first parabolic reflector towards the sun.
Inventors
- 👤 Saburo Maruko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:19
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7861; F; F24; F24S; F24S23/00; F24S23/70; F24S23/79; F24S30/00; F24S30/40; F24S30/45; F24S30/452; F24S50/00; F24S50/20; F24S25/00; F24S25/10; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y02E10/47
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
210 words
A sunrays focusing apparatus, comprising in combination: a first vertical shaft; a support frame rotatably mounted on said first vertical shaft; first drive means for rotating said support frame around said first vertical shaft; horizontal shaft means rotatably supported on said support frame; second drive means for rotating said horizontal shaft means; a first trough-shaped parabolic reflector means fixedly secured to said horizontal shaft means for reflecting incoming sunrays; first elongated refractor means mounted to said first reflector means at or adjacent to a focal axis of said first reflector means, said first elongated refractor means being adapted to refract sunrays reflected by said first parabolic reflector means into parallel sunrays; second trough-shaped parabolic reflector means mounted to said first parabolic reflector means in such a way that focal axes of both said first and second parabolic reflector means are disposed at right angles to each other; second refractor means mounted to said first parabolic reflector means at or adjacent to the focal axis of said second parabolic reflector means for refracting sunrays reflected by said second parabolic reflector means into highly condensed parallel sunrays; and sun tracking means responsive to sunrays for directing said first parabolic reflector means to the sun by controlling said first and second drive means.
Claim 2
Dependent Claim
210 words
A sunrays focusing apparatus, comprising in combination: a first vertical shaft; a support frame rotatably mounted on said first vertical shaft; first drive means for rotating said support frame around said first vertical shaft; horizontal shaft means rotatably supported on said support frame; second drive means for rotating said horizontal shaft means; a first trough-shaped parabolic reflector means fixedly secured to said horizontal shaft means for reflecting incoming sunrays; first elongated refractor means mounted to said first reflector means at or adjacent to a focal axis of said first reflector means, said first elongated refractor means being adapted to refract sunrays reflected by said first parabolic reflector means into parallel sunrays; second trough-shaped parabolic reflector means mounted to said first parabolic reflector means in such a way that focal axes of both said first and second parabolic reflector means are disposed at right angles to each other; second refractor means mounted to said first parabolic reflector means at or adjacent to the focal axis of said second parabolic reflector means for refracting sunrays reflected by said second parabolic reflector means into highly condensed parallel sunrays; and sun tracking means responsive to sunrays for directing said first parabolic reflector means to the sun by controlling said first and second drive means.
Claim 3
Dependent Claim
106 words
A sunrays focusing apparatus according to claim 1 further comprising a horizontal rotary shaft mounted for rotation on said support frame, said horizontal rotary shaft being aligned with said horizontal shaft means, a first flat reflector mounted on said horizontal rotary shaft with such a inclination relative to said second refractor means as to reflect highly condensed parallel sunrays from said second refractor means in a horizontal direction; and means for operatively connecting said horizontal rotary shaft to said second drive means in such a way that the angular velocity of said horizontal rotary shaft becomes half of the angular velocity of said horizontal shaft means.
Claim 4
Dependent Claim
83 words
A sunrays focusing apparatus according to claim 2 further comprising a second vertical shaft rotatably mounted to said first vertical shaft and adapted to be driven by said first drive means, said second vertical shaft having said support frame fixedly secured thereto, a second flat reflector mounted to said second vertical shaft, and a third flat reflector mounted to said first vertical shaft, said first, second and third flat reflectors being arranged to form an optical path for the highly condensed parallel sunrays.
Claim 5
Dependent Claim
42 words
A sunrays focusing apparatus according to claim 1, 2 or 3 wherein each of said first and second refractor means is of hollow shaped construction and wherein said apparatus further comprises means for circulating fluid in said first and second hollow refractors.
Claim 6
Dependent Claim
21 words
A sunrays focusing apparatus according to claim 1 wherein said sun tracking means is mounted on said second parabolic reflector means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |