Patent US4427634A successfully refreshed from Google Patents.
US4427634A
Expired / Lapsed
US
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Apparatus for microscopic examination of specimens
Assignee: Wright Laboratories Inc
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Filing: 1982-03-12
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Granted: 1984-01-24
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Expires: 2002-03-12
Abstract
Abstract Apparatus for microscopic examination of a specimen includes a cylindrical test tube having a well, defined by closely spaced transparent flat walls at the closed end of the tube. A paddle-shaped insert has transparent insertable flat sided body at one end insertable into the well with a long stem extending out of the open end of the tube. The thickness of the body is slightly less than the spacing of walls of the well to spread specimen therein between and to support the specimen when the apparatus is placed in or on a microscope for examination of the specimen.
Inventors
- 👤 William J. Truglio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:47
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
Apparatus for microscopically examining a specimen comprising: a transparent cylindrical tube having open and closed opposite axial ends; said closed end of said tube being formed with closely spaced, flat walls and diametrically spaced circumferentially extending narrow other walls defining a diametrically extending centrally located well for containing said specimen while being examined in a microscope; wherein said well is substantially rectangular in cross-section and has a first dimension substantially equal to the diameter of said tube and a second dimension less than one half the diameter of said tube; an insert for said well, said insert having an optically transparent flat body with flat, opposed sides, said body being slightly smaller in cross-sectional area than the cross-sectional area of the interior of said well to facilitate insertion into said well and to serve as a slide support for said specimen in said well during examination thereof in said microscope; and said insert having a stem longer than the axial length of said tube and secured to one end of said body to facilitate insertion of said body through said tube into said well and removal therefrom.
Claim 2
Dependent Claim
187 words
Apparatus for microscopically examining a specimen comprising: a transparent cylindrical tube having open and closed opposite axial ends; said closed end of said tube being formed with closely spaced, flat walls and diametrically spaced circumferentially extending narrow other walls defining a diametrically extending centrally located well for containing said specimen while being examined in a microscope; wherein said well is substantially rectangular in cross-section and has a first dimension substantially equal to the diameter of said tube and a second dimension less than one half the diameter of said tube; an insert for said well, said insert having an optically transparent flat body with flat, opposed sides, said body being slightly smaller in cross-sectional area than the cross-sectional area of the interior of said well to facilitate insertion into said well and to serve as a slide support for said specimen in said well during examination thereof in said microscope; and said insert having a stem longer than the axial length of said tube and secured to one end of said body to facilitate insertion of said body through said tube into said well and removal therefrom.
Claim 3
Dependent Claim
76 words
Apparatus as defined in claim 1, wherein said body has a width substantially equal to said first dimension to fit snugly in said well and wherein said body has a thickness smaller than said second dimension to define a space ranging from 1 to 4 mils between said sides of said body and adjacent sides of said flat walls of said well to spread said specimen and to support said specimen for examination in said microscope.
Claim 4
Dependent Claim
66 words
Apparatus as defined in claim 2, wherein said closed end of said well is substantially cylindrically curved, and wherein the other end of said body has a curvature corresponding to that of said closed end of said well to prevent rotation of body in said well to maintain said spaces between said sides of said body and said adjacent sides of said walls of said well.
Claim 5
Dependent Claim
38 words
Apparatus as defined in claim 2, wherein said tube is formed with shoulders at the open end of said well integral with said flat walls thereof, to dispose said well diametrally of said tube at its closed end.
Claim 6
Dependent Claim
57 words
Apparatus as defined in claim 4, wherein said well has a length axially of said tube substantially equal to the distance between said closed end of said tube and said shoulders, and wherein said body of said insert has a length axially of said tube substantially equal to said length of said well to fit snugly therein.
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) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |