Patent US3236376A successfully refreshed from Google Patents.
US3236376A
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Dust removing apparatus for an article classifier
Assignee: FMC Corp
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Filing: 1963-06-19
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Granted: 1966-02-22
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Boyce John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:21
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/36; B07C5/363; B07C5/365; B07C5/02; B07C5/34; B07C5/342; B07C5/3425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN APPARATUS FOR PREVENTING ACCUMULATION OF DUST ON THE OPTICAL SYSTEM OF AN OPTICAL CLASSIFYING APPARATUS IN A MACHINE HAVING WALL MEANS DEFINING A DUST DISPERSING CHAMBER COMPRISING OPTICAL INSPECTION MEANS LOCATED WITHIN SAID CHAMBER INCLUDING A LENS, MEANS PASSING A STREAM OF GASEOUS FLUID BETWEEN SAID WALL MEANS AND SAID LENS FOR ENTRAINING THE DUST IN THE STREAM, AND MEANS FOR CONVEYING THE DUST LADEN STREAM AWAY FROM SAID LENS
Claim 2
Independent Claim
71 words
AN APPARATUS FOR PREVENTING ACCUMULATION OF DUST ON THE OPTICAL SYSTEM OF AN OPTICAL CLASSIFYING APPARATUS IN A MACHINE HAVING WALL MEANS DEFINING A DUST DISPERSING CHAMBER COMPRISING OPTICAL INSPECTION MEANS LOCATED WITHIN SAID CHAMBER INCLUDING A LENS, MEANS PASSING A STREAM OF GASEOUS FLUID BETWEEN SAID WALL MEANS AND SAID LENS FOR ENTRAINING THE DUST IN THE STREAM, AND MEANS FOR CONVEYING THE DUST LADEN STREAM AWAY FROM SAID LENS
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |