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Patent US3580658A successfully refreshed from Google Patents.
US3580658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cooled microscope slide
Assignee: Individual
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Filing: 1968-06-24
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Granted: 1971-05-25
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Expires: 1988-06-24
Abstract
Abstract A gas cooled microscope slide having a built-in cooling chamber formed by a through opening in the slide body which is closed top and bottom by spaced laminated glass windows upon which a specimen is placed for observation. Internal passages in the slide body direct a gas coolant to and from the chamber and lead to edge openings in the slide body which are connected by flexible tubing to a coolant source and to cooling and drying elements.
Inventors
- 👤 Percy L Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
An integral one-piece microscope slide comprising: a thin, flat, platelike slide body, cooling chamber means within said slide body, said cooling chamber means including a spaced-apart pair of plates of transparent material defining the upper and lower limits of said chamber and a light path through said body, and internal passage means in said slide body connected with said chamber for directing a gas coolant through said chamber from an external source, the maximum thickness of said slide body through said pair of transparent plates not exceeding the thickness of a conventional microscope slide not having a built-in cooling chamber, said thickness of a conventional microscope slide being less than 2 millimeters.
Claim 2
Dependent Claim
112 words
An integral one-piece microscope slide comprising: a thin, flat, platelike slide body, cooling chamber means within said slide body, said cooling chamber means including a spaced-apart pair of plates of transparent material defining the upper and lower limits of said chamber and a light path through said body, and internal passage means in said slide body connected with said chamber for directing a gas coolant through said chamber from an external source, the maximum thickness of said slide body through said pair of transparent plates not exceeding the thickness of a conventional microscope slide not having a built-in cooling chamber, said thickness of a conventional microscope slide being less than 2 millimeters.
Claim 3
Dependent Claim
15 words
A slide according to claim 1 wherein said upper and lower plates are optically flat.
Claim 4
Dependent Claim
31 words
A slide according to claim 1 wherein said upper and lower plates are optically flat and have outer surfaces coplanar with the top and bottom surfaces, respectively, of said slide body.
Claim 5
Dependent Claim
34 words
A slide according to claim 1 wherein said passage means includes inlet and outlet openings at side edges of said slide body and coupling means for connecting said passage means to external conduit means.
Claim 6
Dependent Claim
41 words
A slide according to claim 1 including a gas cooling circuit comprising a source of pressurized gas, conduit means connecting said source to said passage means, and gas cooling and gas drying means in said circuit externally of said slide body.
Claim 7
Dependent Claim
33 words
A slide according to claim 1 wherein said passage means includes a plurality of internal passages connected in parallel with one another within said slide body and each communicating separately with said chamber.
Claim 8
Dependent Claim
38 words
A slide according to claim 1 wherein the maximum thickness of said slide as measured through said transparent plates and said cooling chamber is no greater than the thickness of said slide body and less than 2 millimeters.
Claim 9
Dependent Claim
107 words
An integral one-piece microscope slide comprising: a thin, flat, platelike slide body, cooling chamber means within said slide body, said cooling chamber means including a spaced-apart pair of plates of transparent material defining the upper and lower limits of said chamber and a light path through said body, internal passage means in said slide body connected with said chamber for directing a gas coolant through said chamber from an external source, each of said upper and lower plates comprising at least two laminates of transparent material having the same refractive index cemented together by transparent cementing means having the same refractive index as that of said laminates.
Claim 10
Dependent Claim
107 words
An integral one-piece microscope slide comprising: a thin, flat, platelike slide body, cooling chamber means within said slide body, said cooling chamber means including a spaced-apart pair of plates of transparent material defining the upper and lower limits of said chamber and a light path through said body, internal passage means in said slide body connected with said chamber for directing a gas coolant through said chamber from an external source, each of said upper and lower plates comprising at least two laminates of transparent material having the same refractive index cemented together by transparent cementing means having the same refractive index as that of said laminates.
References Cited (Backward Citations)
SU174396A1
Cited
US3192575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |