US4101778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rod-shaped specimen holder for an optical corpuscular-beam apparatus
Assignee: Siemens AG
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Filing: 1976-09-13
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Granted: 1978-07-18
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Expires: 1996-09-13
Abstract
Abstract An optical corpuscular-beam apparatus including a rod-shaped specimen holder passing through a wall of the apparatus, which holder is secured in the apparatus wall by a first bearing and engages an adjustable counterbearing in the interior of the apparatus. The improvement of the invention comprises the first bearing comrising a diaphragm disposed circumferentially about the specimen holder and having an outer edge mechanically coupled to the apparatus wall.
Inventors
- 👤 Moriz VON Rauch
- 👤 Lee H. Veneklasen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:00
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/18; H01J37/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
132 words
In an optical corpuscular-beam apparatus including a rod-shaped specimen holder passing through a wall of the apparatus, said holder being secured in the apparatus wall by a first bearing and engaging at one end an adjustable counterbearing in the interior of the apparatus, which apparatus interior is under a vacuum during operation of the apparatus; the improvement comprising: an outer housing, mounted on said apparatus wall and disposed about the other end of said specimen holder, which other end is located outside said apparatus interior, the interior of said outer housing being under vacuum during the operation of the apparatus; and said first bearing comprising a diaphragm disposed circumferentially about said rod-shaped specimen holder, said diaphragm being mounted in a second housing mounted within and rotatable with respect to said apparatus wall.
Claim 2
Dependent Claim
132 words
In an optical corpuscular-beam apparatus including a rod-shaped specimen holder passing through a wall of the apparatus, said holder being secured in the apparatus wall by a first bearing and engaging at one end an adjustable counterbearing in the interior of the apparatus, which apparatus interior is under a vacuum during operation of the apparatus; the improvement comprising: an outer housing, mounted on said apparatus wall and disposed about the other end of said specimen holder, which other end is located outside said apparatus interior, the interior of said outer housing being under vacuum during the operation of the apparatus; and said first bearing comprising a diaphragm disposed circumferentially about said rod-shaped specimen holder, said diaphragm being mounted in a second housing mounted within and rotatable with respect to said apparatus wall.
Claim 3
Dependent Claim
26 words
The optical corpuscular-beam apparatus recited in claim 1, wherein said diaphragm is comprised of two diaphragm surfaces mechanically coupled to each other at their outer edges.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |