US3316468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viewing method and apparatus for high vacuum systems
Assignee: Temescal Metallurgical Corp
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Filing: 1963-05-03
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Granted: 1967-04-25
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:22
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
AN APPARATUS FOR VIEWING THE INTERIOR OF A VACUUM CHAMBER WHICH CONTAINS CONDENSIBLE VAPOR MOLECULES, IONS AND FREE ELECTRONS COMPRISING, A VIEWING TUBE ADAPTED TO BE SUPPORTED IN A POSITION EXTENDING THROUGH A WALL OF A VACUUM CHAMBER, A WINDOW DISPOSED ACROSS THE OUTER END OF SAID VIEWING TUBE, AND MEANS FOR GENERATING A NEGATIVE ELECTROSTATIC FIELD AT THE INTERIOR SURFACE OF SAID WINDOW WHEREBY POSITIVE IONS ENTERING SAID FIELD ARE ACCELERATED ONTO SAID WINDOW FOR CLEANING THEREOF.
Claim 2
Independent Claim
78 words
AN APPARATUS FOR VIEWING THE INTERIOR OF A VACUUM CHAMBER WHICH CONTAINS CONDENSIBLE VAPOR MOLECULES, IONS AND FREE ELECTRONS COMPRISING, A VIEWING TUBE ADAPTED TO BE SUPPORTED IN A POSITION EXTENDING THROUGH A WALL OF A VACUUM CHAMBER, A WINDOW DISPOSED ACROSS THE OUTER END OF SAID VIEWING TUBE, AND MEANS FOR GENERATING A NEGATIVE ELECTROSTATIC FIELD AT THE INTERIOR SURFACE OF SAID WINDOW WHEREBY POSITIVE IONS ENTERING SAID FIELD ARE ACCELERATED ONTO SAID WINDOW FOR CLEANING THEREOF.
Claim 3
Independent Claim
91 words
A METHOD OF CLEANING A VIEWING WINDOW DISPOSED ACROSS THE OUTER END OF A VIEWING TUBE SUPPORTED IN A POSITION EXTENDING THROUGH A WALL OF A VACUUM CHAMBER WHICH CONTAINS CONDENSIBLE VAPOR MOLECULES, IONS AND FREE ELECTRONS, WHICH METHOD COMPRISES GENERATING A NEGATIVE ELECTROSTATIC FIELD AT THE INTERIOR SURFACE OF THE WINDOW, ACCELERATING AND FOCUSING THE POSITIVE IONS ENTERING THE VIEWING TUBE ONTO THE WINDOW BY MEANS OF THE ELECTROSTATIC FIELD, WHEREBY CONDENSED VAPOR MOLECULES DEPOSITED UPON THE INTERIOR SURFACE OF THE WINDOW ARE BOMBARDED BY THE ACCELERATED AND FOCUSED IONS.
Claim 4
Independent Claim
91 words
A METHOD OF CLEANING A VIEWING WINDOW DISPOSED ACROSS THE OUTER END OF A VIEWING TUBE SUPPORTED IN A POSITION EXTENDING THROUGH A WALL OF A VACUUM CHAMBER WHICH CONTAINS CONDENSIBLE VAPOR MOLECULES, IONS AND FREE ELECTRONS, WHICH METHOD COMPRISES GENERATING A NEGATIVE ELECTROSTATIC FIELD AT THE INTERIOR SURFACE OF THE WINDOW, ACCELERATING AND FOCUSING THE POSITIVE IONS ENTERING THE VIEWING TUBE ONTO THE WINDOW BY MEANS OF THE ELECTROSTATIC FIELD, WHEREBY CONDENSED VAPOR MOLECULES DEPOSITED UPON THE INTERIOR SURFACE OF THE WINDOW ARE BOMBARDED BY THE ACCELERATED AND FOCUSED IONS.
References Cited (Backward Citations)
US3114790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |