US3638677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use with apparatus for the counting of particles in suspension
Assignee: Individual
•
Filing: 1969-12-17
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Granted: 1972-02-01
•
Expires: 1989-12-17
Abstract
Abstract Device for use with apparatus for counting microscopic particles, which apparatus includes a phial having a ruby in a wall thereof wherein the ruby has a microscopic hole through which must pass a suspension of the particles to be counted, which device comprises an apertured plug removably seated in the wall of the phial, and wherein the ruby is itself removably mounted in the aperture of the plug, whereby the ruby is easily removed for replacement or for unblocking of the hole.
Inventors
- 👤 Soemia Baccarini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:54
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/13; B; B29; B29C; B29C51/00; B29C51/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86228
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A device for use with apparatus for counting particles by passage of a solution containing said particles in suspension through a microscopic hole in a ruby, said apparatus including a phial having an aperture in a wall thereof wherein said ruby is positioned, said device comprising an apertured plug for removable seating in said opening, said ruby being mounted on said plug so as to close the aperture thereof and to provide communication between said microscopic hole and the interior of said phial.
Claim 2
Independent Claim
83 words
A device for use with apparatus for counting particles by passage of a solution containing said particles in suspension through a microscopic hole in a ruby, said apparatus including a phial having an aperture in a wall thereof wherein said ruby is positioned, said device comprising an apertured plug for removable seating in said opening, said ruby being mounted on said plug so as to close the aperture thereof and to provide communication between said microscopic hole and the interior of said phial.
Claim 3
Dependent Claim
57 words
A device in accordance with claim 1, in which the aperture of the phial is provided with an internally threaded neck, and the plug is provided with an exterior thread corresponding to the interior thread of the said neck and an enlarged head with knurled periphery to facilitate positioning and removal of said plug from said neck.
Claim 4
Dependent Claim
44 words
A device in accordance with claim 2, in which is inserted between the exterior surface of said neck and the interior surface of the enlarged head of said plug an elastic packing which exerts pressure between the said surfaces to ensure a tight connection.
Claim 5
Dependent Claim
73 words
A device in accordance with claim 1, including as a separate element for unblocking the microscopic hole in said ruby when blocked, a container formed of impermeable and flexible material filled with fluid and having an apertured rigid neck provided with connection means capable of receiving said plug upon which is mounted said ruby, whereby, upon compression of said container, said fluid is forced through and unblocks the microscopic hole of said ruby.
Claim 6
Dependent Claim
32 words
Apparatus in accordance with claim 4, in which the said rigid neck of the element for unblocking the blocked hole is internally threaded for correspondence with the outside thread of said plug.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |