US4050444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective device
Assignee: Individual
•
Filing: 1975-05-22
•
Granted: 1977-09-27
•
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 12:38
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)
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US3875926A
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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 |