US3833449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic coverslipper apparatus
Assignee: Bayer Corp
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Filing: 1972-10-04
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Granted: 1974-09-03
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Expires: 1992-10-04
Abstract
Abstract Apparatus is described for applying a coverslip to a microscope slide wherein a coverslip is dispensed from a magazine, a predetermined amount of liquid is applied to a face of the coverslip, a microscope slide is positioned in close proximity to such face of the coverslip, and a portion of the coverslip is moved toward the microscope slide so that the liquid comes into contact with the slide and bridges a portion of the space between the coverslip and the slide. Capillary action of the liquid then acts to draw the coverslip against the slide. The liquid fills the space between the coverslip and slide and capillary action maintains all the liquid within such capillary space.
Inventors
- 👤 L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34; G01; G01N; G01N1/00; G01N1/28; G01N1/30; G01N1/31; G01N1/312; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1776; Y10T156/1778; Y10T156/1783
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
Apparatus for applying a coverslip to a microscope slide which comprises in combination means for dispensing a coverslip having a flat surface, means for applying a predetermined amount of liquid to the flat surface of said coverslip, means for positioning a microscope slide in close proximity to the flat surface of said coverslip to form a capillary space therebetween, and means for reducing the width only of a portion of such capillary space so that the liquid on said coverslip comes into contact with said microscope slide and bridges a portion of such capillary space, the surface tension and the capillary action of said liquid then acting to draw the coverslip against the microscope slide with the liquid filling the space therebetween, such capillary action also maiNtaining the liquid completely within such capillary space.
Claim 2
Dependent Claim
134 words
Apparatus for applying a coverslip to a microscope slide which comprises in combination means for dispensing a coverslip having a flat surface, means for applying a predetermined amount of liquid to the flat surface of said coverslip, means for positioning a microscope slide in close proximity to the flat surface of said coverslip to form a capillary space therebetween, and means for reducing the width only of a portion of such capillary space so that the liquid on said coverslip comes into contact with said microscope slide and bridges a portion of such capillary space, the surface tension and the capillary action of said liquid then acting to draw the coverslip against the microscope slide with the liquid filling the space therebetween, such capillary action also maiNtaining the liquid completely within such capillary space.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1 wherein the liquid is applied to an upper surface of said coverslip and said microscope slide is positioned over said coverslip.
Claim 4
Dependent Claim
29 words
Apparatus according to claim 2 wherein the means for reducing the width of a portion of the capillary space comprises a means for elevating a portion of the coverslip.
Claim 5
Dependent Claim
18 words
Apparatus according to claim 3 wherein the means for elevating a portion of the coverslip is spring actuated.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 1 also having a magazine for supplying coverslips to the means for dispensing such coverslips.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |