Patent US3293972A successfully refreshed from Google Patents.
US3293972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microtome
Assignee: Compur Werk GmbH and Co
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Filing: 1965-08-23
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Granted: 1966-12-27
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Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Burkhardt Rolf
- 👤 Lankes Richard
- 👤 Imhof Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/06; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/504756; Y10T409/505412; Y10T83/00; Y10T83/647; Y10T83/6492; Y10T83/654; Y10T83/6563; Y10T83/6566
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A MICROTOME COMPRISING A BASE, A KNIFE MOUNTED ON SAID BASE, A MAIN CARRIAGE RECIPROCABLE ON SAID BASE, A PREPARATION HOLDER RECIPROCABLE TOWARDS AND AWAY FROM THE KNIFE ON SAID MAIN CARRIAGE, AND ADVANCING MEANS FOR ADVANCING THE PREPARATION HOLDER IN RELATION TO THE KNIFE, SAID ADVANCING MEANS INCLUDING A WEDGE, A PROJECTION ON THE PREPARATION HOLDER ENGAGEABLE WITH THE WEDGE, AND A STEP INDEXING MECHANISM OPERATIVELY ASSOCIATED WITH THE WEDGE FOR ADJUSTING THE POSITION OF THE WEDGE WHEREBY THE PREPARATION HOLDER IS ADVANCED RELATIVE TO THE KNIFE, AN AUXILIARY CARRIAGE MOUNTED ON SAID MAIN CARRIAGE FOR MOVEMENT IN THE DIRECTION OF ADVANCE OF THE PREPARATION HOLDER, A SUPPORTING SURFACE ON THE AUXILIARY CARRIAGE AND A COUNTER BAR ON THE MAIN CARRIAGE, A SECOND WEDGE BEARING AGAINST THE SUPPORTING SURFACE AND AGAINST THE COUNTER BAR AND A SECOND INDEXING MEANS COOPERATING WITH THE SECOND WEDGE WHEREBY THE TOTAL DISPLACEMENT OF THE PREPARATION HOLDER IS THE SUM OF THE ADVANCES PROVIDED BY THE TWO WEDGES.
Claim 2
Dependent Claim
164 words
A MICROTOME COMPRISING A BASE, A KNIFE MOUNTED ON SAID BASE, A MAIN CARRIAGE RECIPROCABLE ON SAID BASE, A PREPARATION HOLDER RECIPROCABLE TOWARDS AND AWAY FROM THE KNIFE ON SAID MAIN CARRIAGE, AND ADVANCING MEANS FOR ADVANCING THE PREPARATION HOLDER IN RELATION TO THE KNIFE, SAID ADVANCING MEANS INCLUDING A WEDGE, A PROJECTION ON THE PREPARATION HOLDER ENGAGEABLE WITH THE WEDGE, AND A STEP INDEXING MECHANISM OPERATIVELY ASSOCIATED WITH THE WEDGE FOR ADJUSTING THE POSITION OF THE WEDGE WHEREBY THE PREPARATION HOLDER IS ADVANCED RELATIVE TO THE KNIFE, AN AUXILIARY CARRIAGE MOUNTED ON SAID MAIN CARRIAGE FOR MOVEMENT IN THE DIRECTION OF ADVANCE OF THE PREPARATION HOLDER, A SUPPORTING SURFACE ON THE AUXILIARY CARRIAGE AND A COUNTER BAR ON THE MAIN CARRIAGE, A SECOND WEDGE BEARING AGAINST THE SUPPORTING SURFACE AND AGAINST THE COUNTER BAR AND A SECOND INDEXING MEANS COOPERATING WITH THE SECOND WEDGE WHEREBY THE TOTAL DISPLACEMENT OF THE PREPARATION HOLDER IS THE SUM OF THE ADVANCES PROVIDED BY THE TWO WEDGES.
References Cited (Backward Citations)
US1026280A
Cited
US2948190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |