US4650328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the filling pressure of a plurality of microballoons
Assignee: United States Department of Energy
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Filing: 1984-06-05
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Granted: 1987-03-17
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Expires: 2004-06-05
Abstract
Abstract A simple apparatus for removably holding a plurality of microballoons during filling and determination of the pressure of the gas fill. The subject apparatus permits the manipulation of substantial numbers of microballoons necessary for the rapidly growing requirements for these capsules.
Inventors
- 👤 Betty S. Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:28
CPC Classifications
G; G21; G21B; G21B1/00; G21B1/11; G21B1/19; G01; G01N; G01N1/00; G01N1/28; Y; Y02; Y02E; Y02E30/00; Y02E30/10; Y10; Y10S; Y10S376/00; Y10S376/916
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
An apparatus for determining the filling pressure of a plurality of microballoons, which comprises in combination: a. an optically transparent plate having a substantially flat surface; b. a rod affixed to the substantially flat surface of said optically transparent plate for removably attaching the microballoons, said rod being located substantially parallel to said transparent plate, and having a sticky substance thereon; and c. means for interferometrically scanning each of the microballoons both before and after the filling thereof in order to determine the gas fill pressure, the individual microballoons being attached sufficiently rigidly to said rod to permit said means for interferometrically scanning each of the microballoons to measure substantially the same microballoon orientation before and after the filling thereof.
Claim 2
Independent Claim
120 words
An apparatus for determining the filling pressure of a plurality of microballoons, which comprises in combination: a. an optically transparent plate having a substantially flat surface; b. a rod affixed to the substantially flat surface of said optically transparent plate for removably attaching the microballoons, said rod being located substantially parallel to said transparent plate, and having a sticky substance thereon; and c. means for interferometrically scanning each of the microballoons both before and after the filling thereof in order to determine the gas fill pressure, the individual microballoons being attached sufficiently rigidly to said rod to permit said means for interferometrically scanning each of the microballoons to measure substantially the same microballoon orientation before and after the filling thereof.
Claim 3
Dependent Claim
14 words
The apparatus as described in claim 1, wherein said sticky substance includes silastic adhesive.
Claim 4
Dependent Claim
17 words
The apparatus as described in claim 2, wherein said optically transparent plate includes a glass microscope slide.
Claim 5
Dependent Claim
13 words
The apparatus as described in claim 3, wherein said rod includes glass rod.
References Cited (Backward Citations)
US3899610A
Cited
US4544520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |