US4563883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specimen immersing device
Assignee: C Reichert Optische Werke AG
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Filing: 1984-09-17
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Granted: 1986-01-14
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Expires: 2004-09-17
Abstract
Abstract A device for immersing a specimen into a cryogenic cooling liquid comprising an injector for carrying a specimen, means for accelerating the injector to a predetermined velocity vertically into the liquid, and means for rotating the injector, before the vertical movement ends, or at the moment it ends, to promote heat transfer from the specimen. Various means for effecting rotation of the injector are described.
Inventors
- 👤 Hellmuth Sitte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:03
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/42
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
A device for immersing a specimen into a cryogenic cooling liquid comprising a holder for carrying a specimen, means for injecting said holder at a predetermined velocity downwardly into the liquid, and means for rotating the holder while in said liquid.
Claim 2
Independent Claim
41 words
A device for immersing a specimen into a cryogenic cooling liquid comprising a holder for carrying a specimen, means for injecting said holder at a predetermined velocity downwardly into the liquid, and means for rotating the holder while in said liquid.
Claim 3
Dependent Claim
63 words
The device of claim 1 wherein said injection means includes an axially displaceable shaft, said holder being mounted on one end of said shaft, said rotating means includes a rotatable member having a bore, said bore being adapted to receive said shaft, said member being adapted to transfer rotational motion of said member to said shaft and drive means to rotate said member.
Claim 4
Dependent Claim
14 words
The device of claim 2 wherein said member and said shaft are frictionally coupled.
Claim 5
Dependent Claim
43 words
The device of claim 3 wherein said injection means includes a biasing means, said biasing means being adapted to store sufficient energy to accelerate said shaft to a velocity of 5 m/sec, and trigger means to release the energy of said biasing means.
Claim 6
Dependent Claim
19 words
The device of claim 4 wherein said biasing means urges said shaft and said rotatable member into frictional engagement.
Claim 7
Dependent Claim
12 words
The device of claim 4 wherein said biasing means includes a spring.
Claim 8
Dependent Claim
13 words
The device of claim 4 wherein said drive means includes a timing control.
Claim 9
Dependent Claim
16 words
The device of claim 4 wherein a plurality of fluid impellors are mounted on said shaft.
Claim 10
Dependent Claim
18 words
The device of claim 8 wherein said drive means includes a fluid jet and turbine operatively associated therewith.
Claim 11
Dependent Claim
18 words
The device of claim 8 wherein said drive means includes an electric motor operatively connected to said shaft.
Claim 12
Dependent Claim
54 words
The device of claim 4 wherein said rotatable member has a hollow cylindrical sleeve extending therefrom and said shaft has a cylinder mounted thereon, said cylinder having an outer surface adapted to cooperate with the inner wall of said sleeve whereby frictional engagement is provided by the air between said sleeve and said cylinder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |