Patent US2359640A successfully refreshed from Google Patents.
Patent US3796477A successfully refreshed from Google Patents.
US3796477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens housing and lens cover for objective lens ring of an operating microscope
Assignee: Xomox Corp
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Filing: 1972-09-25
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Granted: 1974-03-12
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Expires: 1992-09-25
Abstract
Abstract A flexible, resilient, distortable lens housing adapted to snugly receive the objective lens ring of the objective lens of an operating microscope is provided with a removable lens cover. The lens cover includes an easily accessible manipulative handle.
Inventors
- 👤 J Geraci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:41
CPC Classifications
G; G02; G02B; G02B21/00; A; A61; A61B; A61B46/00; A61B46/10; A61B90/00; A61B90/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
203 words
In a disposable microscope drape for positioning over an operating microscope in enclosing relationship thereto and comprising an elongate, continuous, substantially tubular drape open at one end and having a flexible, resilient, distortable, lens ring housing secured to and carried by the drape in a position of registry with an objective lens ring of the microscope, said housing having a central opening therethrough defining an inner wall to snugly receive said objective lens ring, said inner wall having an annular, lens cover retaining groove therein, an optically clear, distortion free lens cover snugly removably received at its outer periphery in said lens cover retaining groove in said lens ring housing in spanning relationship to said opening whereby to overlie the objective lens of said microscope, said housing having a radially extending recess therein extending from the inner wall to the outer surface thereof, and an outwardly extended manipulative handle on said lens cover which may be manually grasped to remove said cover from said housing without damaging said housing or disturbing the position of said housing when it is operatively positioned on the objective lens of a microscope, said handle received in said recess when said lens cover is positioned in said groove.
Claim 2
Dependent Claim
203 words
In a disposable microscope drape for positioning over an operating microscope in enclosing relationship thereto and comprising an elongate, continuous, substantially tubular drape open at one end and having a flexible, resilient, distortable, lens ring housing secured to and carried by the drape in a position of registry with an objective lens ring of the microscope, said housing having a central opening therethrough defining an inner wall to snugly receive said objective lens ring, said inner wall having an annular, lens cover retaining groove therein, an optically clear, distortion free lens cover snugly removably received at its outer periphery in said lens cover retaining groove in said lens ring housing in spanning relationship to said opening whereby to overlie the objective lens of said microscope, said housing having a radially extending recess therein extending from the inner wall to the outer surface thereof, and an outwardly extended manipulative handle on said lens cover which may be manually grasped to remove said cover from said housing without damaging said housing or disturbing the position of said housing when it is operatively positioned on the objective lens of a microscope, said handle received in said recess when said lens cover is positioned in said groove.
Claim 3
Dependent Claim
13 words
A device as in claim 1, wherein the housing comprises 70 Durometer PVC.
Claim 4
Dependent Claim
12 words
A device as in claim 1, wherein the lens cover comprises acrylic.
Claim 5
Dependent Claim
59 words
A device as in claim 1, wherein the housing has a front surface and a rear surface, said central opening extending from the front surface through the rear surface, and said annular groove spaced from the rear surface a distance so as to position tHe cover secured therein in engagement with an outer peripheral edge of the lens ring.
Claim 6
Dependent Claim
25 words
A device as in claim 4, wherein an integral, annular, axially projecting glare shield is on the front surface of said housing around said opening.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |