Patent US3574445A successfully refreshed from Google Patents.
US3574445A
Expired / Lapsed
US
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Source of radiation
Assignee: Milton Roy LLC
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Filing: 1966-03-28
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Granted: 1971-04-13
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Expires: 1986-03-28
Abstract
Abstract A source of radiation generated from a single light source for optical comparison systems is provided wherein one or more modulated light beams of substantially equal intensity is sequentially directed along a predetermined path so as to pass through a liquid sample.
Inventors
- 👤 Duane D Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:36
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/34; G01J1/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A source of modulated radiation for photometric apparatus comprising: a. an enclosure having a plurality of spaced openings therein; b. a source of radiation mounted within said enclosure; c. shutter means movably mounted for periodically occluding said openings; d. reflecting means for reflecting radiation from said source mounted within said enclosure and arranged therewithin to reflect the radiation through each of said plurality of openings with substantially equal intensity; and e. the reflecting means comprises a plurality of triangularly shaped reflecting surfaces arranged and mounted to form a cone, the apex of which extends toward said source of radiation.
Claim 2
Dependent Claim
99 words
A source of modulated radiation for photometric apparatus comprising: a. an enclosure having a plurality of spaced openings therein; b. a source of radiation mounted within said enclosure; c. shutter means movably mounted for periodically occluding said openings; d. reflecting means for reflecting radiation from said source mounted within said enclosure and arranged therewithin to reflect the radiation through each of said plurality of openings with substantially equal intensity; and e. the reflecting means comprises a plurality of triangularly shaped reflecting surfaces arranged and mounted to form a cone, the apex of which extends toward said source of radiation.
Claim 3
Dependent Claim
72 words
The source of radiation as defined in claim 1 wherein: a. the outer surface of said hollow enclosure is cylindrically shaped; and b. said shutter means further comprises a hollow cylinder having an aperture therethrough, said cylinder being movably mounted about the outer surface of said inner enclosure in a coaxial relation therewith, so that radiation is transmitted from said source whenever said aperture is moved past an opening in said enClosure.
Claim 4
Dependent Claim
26 words
The source of radiation as defined in claim 2 which further comprises a constant speed drive to which is connected said hollow cylinder for rotation therewith.
References Cited (Backward Citations)
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |