Patent US4050444A successfully refreshed from Google Patents.
US4050444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective device
Assignee: Individual
•
Filing: 1975-05-22
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Granted: 1977-09-27
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Expires: 1995-05-22
Abstract
Abstract The invention provides for a linear reflective device having a plurality of concave reflective regions disposed along a reference line, such that normal incident light is focussed to a focal region by all of the reflective regions. The reflective device may be curved in a direction normal to the reference line or be planar. The invention further provides a method and means for manufacturing the reflective device by rolling, pressing, or molding. The invention still further provides optical, radio, or acoustical apparatus having the reflective device.
Inventors
- 👤 Peter William Dolamore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:45
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/09; F; F24; F24S; F24S23/00; F24S23/70; F24S23/80; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A reflective device which includes a plurality of concave reflective regions arranged in sets, with the reflective regions of each set having a single co-incident focal region, the device having as many focal regions as there are sets and any two consecutive reflective regions of one set being separated from each other by a reflective region of another set, the reflective regions being disposed adjacent each other along a reference line to have a linear extended configuration.
Claim 2
Dependent Claim
77 words
A reflective device which includes a plurality of concave reflective regions arranged in sets, with the reflective regions of each set having a single co-incident focal region, the device having as many focal regions as there are sets and any two consecutive reflective regions of one set being separated from each other by a reflective region of another set, the reflective regions being disposed adjacent each other along a reference line to have a linear extended configuration.
Claim 3
Dependent Claim
42 words
A reflective device as claimed in claim 1, in which the reflective regions passing through a plane perpendicular to the reference line, have a linear cross-section in said plane, the focal regions each being linear and the device having a planar configuration.
Claim 4
Dependent Claim
38 words
A reflective device as claimed in claim 1, in which all the reflective regions passing through a plane perpendicular to the reference line, have a concave cross-section in said plane, the focal regions each being a focal point.
Claim 5
Dependent Claim
49 words
A device as claimed in claim 1, which includes a matrix of sets of dished reflective regions, each reflective region being curved in two dimensions, the reflective regions being disposed along parallel reference lines lying in a plane, to form a planar device having a matrix of focal points.
Claim 6
Dependent Claim
14 words
A device as claimed in claim 1, in which the reflective regions are parabolic.
Claim 7
Dependent Claim
12 words
A device as claimed in claim 1, which is of silvered glass.
Claim 8
Dependent Claim
16 words
A receiver for electro-magnetic or acoustical waves having a reflective device as claimed in claim 1.
Claim 9
Dependent Claim
16 words
A transmitter for electro-magnetic or acoustical waves having a reflective device as claimed in claim 1.
Claim 10
Dependent Claim
29 words
A solar heater having a reflective device as claimed in claim 2, and a plurality of pipes containing a fluid to be heated arranged co-incidentally with the focal lines.
Claim 11
Dependent Claim
14 words
A device as claimed in claim 1, which is of a synthetic plastics material.
Claim 12
Dependent Claim
11 words
A device as claimed in claim 1, which is of metal.
References Cited (Backward Citations)
US2961926A
Cited
US3058394A
Cited
US3225208A
Cited
US3174397A
Cited
US3176678A
Cited
US3613659A
Cited
US3868823A
Cited
US3892476A
Cited
US3841738A
Cited
US3875926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |