US4770520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective cover for turret assembly of an optical instrument
Assignee: CAMBRIDGE INSTRUMENTS Inc A DEL CORP
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Filing: 1987-04-08
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Granted: 1988-09-13
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Expires: 2007-04-08
Abstract
Abstract A cover member is set forth which protects the rotatable turret and objectives of an inverted microscope from exposure to corrosive or otherwise potentially harmful substances.
Inventors
- 👤 Paul A. Hoogesteger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:47
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0088; G02B23/00; G02B23/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A cover member for protecting the rotatable turret and objectives of an inverted microscope comprises a sealing member sized to fit over and encompass the entire turret, said cover member having a plurality of apertures therein for closely fitting about and sealing the area of juncture between the objectives and the rotatable turret.
Claim 2
Dependent Claim
53 words
A cover member for protecting the rotatable turret and objectives of an inverted microscope comprises a sealing member sized to fit over and encompass the entire turret, said cover member having a plurality of apertures therein for closely fitting about and sealing the area of juncture between the objectives and the rotatable turret.
Claim 3
Dependent Claim
29 words
The protective cover as set forth in claim 1 wherein said sealing member further includes a skirt portion which extends over the covers the edge of said rotatable turret.
Claim 4
Dependent Claim
14 words
The protective cover as set forth in claim 1 wherein said cover is flexible.
References Cited (Backward Citations)
DE849186C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |