US3837731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil dispenser for microscope objective
Assignee: Corning Glass Works
•
Filing: 1973-06-22
•
Granted: 1974-09-24
•
Expires: 1993-06-22
Abstract
Abstract A device for dispensing oil between the leading portion of a microscope objective and a microscope slide. The oil dispenser of the present invention includes an enclosure which is attached to the microscope objective such that the leading edge of the objective protrudes through a central aperture in the face plate of the enclosure. Oil is automatically fed from a suitable source to the enclosure through a check valve. The oil is caused to flow from the enclosure to the space between the microscope objective and a microscope slide so as to effect a full oil contact therebetween.
Inventors
- 👤 L Amos
- 👤 C Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:19
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/02; G02B21/33
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A device for dispensing of oil between the leading portion of a microscope objective and a microscope slide comprising a housing adapted to attach to said microscope objective, a face plate operatively associated with said housing to form an enclosure, said face plate having a central aperture to accommodate said leading portion of said microscope objective, means for supplying oil to said housing, and means including at least one elongated radial slot formed in said face plate terminating at said aperture for flowing a quantity of oil from said housing to the space between said leading portion of said microscope objective and said microscope slide sufficient to maintain full oil contact between said objective and said slide.
Claim 2
Independent Claim
117 words
A device for dispensing of oil between the leading portion of a microscope objective and a microscope slide comprising a housing adapted to attach to said microscope objective, a face plate operatively associated with said housing to form an enclosure, said face plate having a central aperture to accommodate said leading portion of said microscope objective, means for supplying oil to said housing, and means including at least one elongated radial slot formed in said face plate terminating at said aperture for flowing a quantity of oil from said housing to the space between said leading portion of said microscope objective and said microscope slide sufficient to maintain full oil contact between said objective and said slide.
Claim 3
Dependent Claim
29 words
The device of claim 1 wherein said means for flowing includes two elongated radial slots formed in said face plate spaced about 90* apart and terminating at said aperture.
Claim 4
Dependent Claim
14 words
The device of claim 1 wherein said means for supplying includes a check valve.
Claim 5
Dependent Claim
32 words
The device of claim 1 wherein said face plate is conically shaped and said aperture is located at the cone apex, said leading portion of said microscope objective protruding through said aperture.
Claim 6
Dependent Claim
17 words
The device of claim 1 wherein said means for supplying includes a source of oil under pressure.
Claim 7
Dependent Claim
15 words
The device of claim 5 wherein said means for supplying further includes a check valve.
Claim 8
Dependent Claim
37 words
The device of claim 6 wherein said check valve comprises a ball and a spring associated with said ball for controlling the flow of oil into said housing, said ball and spring being disposed within said housing.
Claim 9
Dependent Claim
32 words
The device of claim 7 wherein said face plate is conically shaped and said aperture is located at the cone apex, said leading portion of said microscope objective protruding through said aperture.
Claim 10
Dependent Claim
28 words
The device of claim 8 wherein said means for flowing includes two elongated radial slots formed in said face plate spaced 90* apart and terminating at said aperture.
References Cited (Backward Citations)
US3202049A
Cited
US3648587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |