US3700338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light scattering cell
Assignee: United States Department of the Army
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Filing: 1970-06-09
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Granted: 1972-10-24
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Expires: 1990-06-09
Abstract
Abstract A light scattering cell for containing liquid samples or particulate samples suspended in a liquid comprising a tube having light entrance and exit apertures with optical surfaces formed from thin transparent disposable film. The entrance aperture is flat and normal to the incident light and the exit aperture is a portion of a cylinder whose axis is normal to the scattering plane and is at the center of the scattering volume.
Inventors
- 👤 Albert S Trundle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/51
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A light scattering cell comprising: a. a cylindrical body having horizontally aligned openings for the entrance and exit of light; b. a disposable continuous film covering a portion of the circumferential surface of said cylindrical body and forming an optical surface over said openings; c. clamping means circumferentially disposed on said cylindrical body for securing said film in liquid tight relation oveR said openings; and d. a base closing one end of said cylindrical body.
Claim 2
Dependent Claim
75 words
A light scattering cell comprising: a. a cylindrical body having horizontally aligned openings for the entrance and exit of light; b. a disposable continuous film covering a portion of the circumferential surface of said cylindrical body and forming an optical surface over said openings; c. clamping means circumferentially disposed on said cylindrical body for securing said film in liquid tight relation oveR said openings; and d. a base closing one end of said cylindrical body.
Claim 3
Dependent Claim
132 words
A light scattering cell comprising: a. a cylinder having a flat surface ground tangentially to a portion of the outer surface of said cylinder said flat surface having an aperture for light to enter said cell, said cylinder further having a slot arranged for horizontal alignment with said aperture, for viewing the scattered light; b. a disposable film for forming an optical surface covering said aperture and said slot, wherein each end of said film terminates on a rigid lug; c. means for circumferentially clamping said film tightly over said aperture and said slot, wherein said clamping means is a resilient member engaging each lug to retain said film in liquid tight relation to the outer surface of said cylinder; and d. a base secured transversely to one end of said cylinder.
Claim 4
Dependent Claim
132 words
A light scattering cell comprising: a. a cylinder having a flat surface ground tangentially to a portion of the outer surface of said cylinder said flat surface having an aperture for light to enter said cell, said cylinder further having a slot arranged for horizontal alignment with said aperture, for viewing the scattered light; b. a disposable film for forming an optical surface covering said aperture and said slot, wherein each end of said film terminates on a rigid lug; c. means for circumferentially clamping said film tightly over said aperture and said slot, wherein said clamping means is a resilient member engaging each lug to retain said film in liquid tight relation to the outer surface of said cylinder; and d. a base secured transversely to one end of said cylinder.
Claim 5
Dependent Claim
45 words
The light scattering cell recited in claim 2 wherein said cylinder is a length of metal tubing precision ground to roundness internally and externally where said slot is located, the remainder of the interior of said tubing having a rough surface and dull black finish.
Claim 6
Dependent Claim
22 words
A light scattering cell as recited in claim 2 wherein the uniform thickness of said film varies from 0.002 to 0.006 inches.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |