Patent US3718793A successfully refreshed from Google Patents.
Patent US4607921A successfully refreshed from Google Patents.
US4607921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet mount microscopic examination slide II
Assignee: V Tech Inc
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Filing: 1983-09-07
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Granted: 1986-08-26
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Expires: 2003-09-07
Abstract
Abstract A transparent laboratory slide for wet mount microscopic examination. A base member is formed with discrete platform surfaces or slide plates over which a cover slip is removably positioned. The fluid specimen to be examined is retained in the thin space between the platform surface and the cover slip by a capillary action. Peg and socket interconnecting means provide precise spacing between the platform and the cover slip. The platform surface is raised from the bottom wall of the base and the sides of the platform are opened to the external environment. This slide conveniently provides for low power and high power magnification as well as increased magnification by means of oil immersion.
Inventors
- 👤 Irvin E. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:44
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
197 words
A dual member transparent laboratory slide consisting of: a base member having a bottom wall with an upper surface, said base member being integrally formed with at least one plate surface spaced above said upper surface, a fluid receiving surface communicating with said plate surface, and a first interconnecting means; a cover member formed with at least one cover slip having a lower surface adapted to be located in spaced confronting parallel relationship with respect to said plate surface, said cover member being integrally formed with second interconnecting means complementary with said first interconnecting means, said first and second interconnecting means being adapted to removably attach said cover member to said base member; and said first and second interconnecting means being adapted to be shaped and configured to selectively provide a predetermined spacing between said plate surface and said cover slip to thereby form a capillary chamber therebetween of selectably predetermined spacing, and also providing substantially rigid positioning of said cover slip and plate surface against lateral movement, said capillary chamber being open on all sides and wherein said cover slip covers only a portion of said fluid receiving surface where it communicates with said plate surface.
Claim 2
Dependent Claim
197 words
A dual member transparent laboratory slide consisting of: a base member having a bottom wall with an upper surface, said base member being integrally formed with at least one plate surface spaced above said upper surface, a fluid receiving surface communicating with said plate surface, and a first interconnecting means; a cover member formed with at least one cover slip having a lower surface adapted to be located in spaced confronting parallel relationship with respect to said plate surface, said cover member being integrally formed with second interconnecting means complementary with said first interconnecting means, said first and second interconnecting means being adapted to removably attach said cover member to said base member; and said first and second interconnecting means being adapted to be shaped and configured to selectively provide a predetermined spacing between said plate surface and said cover slip to thereby form a capillary chamber therebetween of selectably predetermined spacing, and also providing substantially rigid positioning of said cover slip and plate surface against lateral movement, said capillary chamber being open on all sides and wherein said cover slip covers only a portion of said fluid receiving surface where it communicates with said plate surface.
Claim 3
Dependent Claim
33 words
The laboratory slide recited in claim 1 wherein: said fluid receiving surface is a flat triangularly shaped surface depressed from said plate surface and opening toward the outside edge of said base member.
Claim 4
Dependent Claim
58 words
The laboratory slide recited in claim 1 wherein: said first interconnecting means comprises at least one socket element extending upwardly from said upper surface and having a hole therein; and said second interconnecting means comprises at least one peg projecting downwardly from said cover member, said peg being removably frictionally receivable in said hole in said socket element.
Claim 5
Dependent Claim
35 words
The laboratory slide recited in claim 3 wherein: the bottom of said hole is closed, and the spacing between said cover slip and said plate surface is varied by changing the length of said peg.
Claim 6
Dependent Claim
45 words
The laboratory slide recited in claim 3 wherein: the predetermined spacing between said cover slip and said plate surface is varied by changing the height of said socket element above said upper surface, wherein said supporting element rests on the top of said socket element.
Claim 7
Dependent Claim
34 words
The laboratory slide recited in claim 1 wherein: said cover member is formed with supporting elements on opposite sides of each said cover slip, and said supporting elements are spaced below said lower surface.
Claim 8
Dependent Claim
30 words
The laboratory slide recited in claim 6 wherein: the predetermined spacing between said cover slip and said plate surface may be varied by changing the thickness of said spacing elements.
Claim 9
Dependent Claim
30 words
The laboratory slide recited in claim 6 wherein: each plate surface and each confronting cover slip lower surface extends substantially the entire width of the laboratory slide for maximum viewing.
Claim 10
Dependent Claim
48 words
The laboratory slide recited in claim 1 wherein: said cover member is formed with supporting elements on opposite sides of each said cover slip, said supporting elements are spaced below said lower surface, and a rib element interconnects said supporting elements and extends downwardly from said cover slip.
Claim 11
Dependent Claim
32 words
The laboratory slide recited in claim 1 wherein: the predetermined spacing between said cover slip and said plate surface may be varied by changing the height of one of said interconnecting means.
Claim 12
Dependent Claim
27 words
The laboratory slide recited in claim 1 wherein: the spacing between said cover slip and said plate surfaces ranges between about 0.0254 mm and about 0.1 mm.
Claim 13
Dependent Claim
21 words
The laboratory slide recited in claim 1 wherein: said cover member and said base member are hingeably attached to each other.
Claim 14
Dependent Claim
30 words
The laboratory slide recited in claim 1 wherein: each plate surface and each confronting cover slip lower surface extends substantially the entire width of the laboratory slide for maximum viewing.
Claim 15
Dependent Claim
33 words
The laboratory slide recited in claim 13 wherein: said fluid receiving surface is a flat triangularly shaped surface depressed from said plate surface and opening toward the outside edge of said base member.
Claim 16
Dependent Claim
57 words
The laboratory slide recited in claim 13 wherein: said cover member is formed with supporting elements on opposite sides of each said cover slip, and said supporting elements are spaced below said lower surface; and the predetermined spacing between said cover slip and said plate surface may be varied by changing the thickness of said supporting elements.
Claim 17
Dependent Claim
27 words
The laboratory slide recited in claim 13 wherein: the spacing between said cover slip and said plate surfaces ranges between about 0.0254 mm and about 0.1 mm.
Claim 18
Dependent Claim
21 words
The laboratory slide recited in claim 13 wherein: said cover member and said base member are hingeably attached to each other.
Claim 19
Dependent Claim
58 words
The labroatory slide recited in claim 13 wherein: said first interconnecting means comprises at least one socket element extending upwardly from said upper surface and having a hole therein; and said second interconnecting means comprises at least one peg projecting downwardly from said cover member, said peg being removably frictionally receivable in said hole in said sock element.
Claim 20
Dependent Claim
35 words
The laboratory slide recited in claim 18 wherein: the bottom of said hole is closed, the spacing between said cover slip and said plate surface may be varied by changing the length of said peg.
Claim 21
Dependent Claim
31 words
The laboratory slide recited in claim 1 wherein: the predetermined spacing between said cover slip and said plate surface is varied by changing the height of one of said interconnecting means.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |