US3576125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test apparatus to test light and heat effects on sample surfaces
Assignee: Original Hanau Quarzlampen GmbH
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Filing: 1969-03-19
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Granted: 1971-04-27
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Expires: 1989-03-19
Abstract
Abstract To provide for uniform radiation (heat or light) on a test sample of paints or the like, an elongated radiation source is located centrally of a cylindrical carrier. The test samples are located on the carrier and the ends of the cylindrical carrier are, in one embodiment, closed off by means of reflectors, so that the radiation at the ends is substantially uniform and the same as that reaching samples located in the center. In another embodiment, the radiation source is made more intense at the ends, for example by looping the source upon itself at the ends, or introducing additional radiation. In another embodiment, collimating discs are located in diametrical planes on the cylinder, so that the radiation transmitted from the central, axial source impinges substantially uniformly at the samples, so that the radiation intensity is compensated for end loss.
Inventors
- 👤 Dieter Kockott
- 👤 Burkhard Von Diemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:41
CPC Classifications
G; G01; G01N; G01N17/00; G01N17/004
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
Test apparatus to test light and heat radiation effects on sample surfaces comprising: an elongated source of radiation (12, 20) a cylindrical sample carrier (16) having an inwardly directed cylindrical sample carrier surface adapted to hold said samples on said surface in radiation-receiving relationship with said source, said elongated source (12, 20) being located along the axis of the cylinder formed by said surface; and means directing radiation outwardly from said source unto said surface to impinge upon said surface with intensity which is uniform and symmetrical with respect to any plane transverse to the axis of the cylinder, said radiation-directing means comprising means (FIG. 1:14; FIG. 2: 22) increasing the intensity of radiation impinging on said surface adjacent the axial ends of said cylindrical surface.
Claim 2
Dependent Claim
37 words
Apparatus according to claim 2, wherein said means increasing the intensity of radiation comprises (FIG. 1) mirror surfaces located at the axial ends of said light source directing and reflecting radiation from said source on said surface.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 3, wherein said mirrors are located at the ends of said source and include an angle with respect to said source of between 90* to 105*.
Claim 4
Dependent Claim
28 words
Apparatus according to claim 2, wherein said means increasing the intensity of radiation comprises (FIG. 2) means (22) supplying additional radiation adjacent the terminal ends of the source.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 5, wherein said means supplying additional radiation comprises a looped section (22) of said source adjacent each terminal end whereby the intensity of radiation emitted from said source adjacent its terminal ends is increased.
Claim 6
Dependent Claim
160 words
Test apparatus to test light and heat radiation effects on sample surfaces comprising: an elongated source of Radiation(12, 20), a cylindrical sample carrier (16) having an inwardly directed cylindrical sample carrier surface adapted to hold said samples on said surface in radiation-receiving relationship with said source, said elongated source (12, 20) being located along the axis of the cylinder formed by said surface; and means directing radiation outwardly from said source unto said surface to impinge upon said surface with intensity which is uniform and symmetrical with respect to any plane transverse to the axis of the cylinder, said radiation-directing means including radiation intensity compensating means comprising a plurality of parallel plates (24) extending radially outwardly from said source (12) and spaced from each other by a distance which is small with respect to the diameter of the surface to collimate radiation directed from said source (12) to said cylindrical surface and suppress and redirect divergent radiation from said source.
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |