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Patent US3691889A successfully refreshed from Google Patents.
US3691889A
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Microtome feed mechanism
Assignee: Reichert Jung Optische Werke AG
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Filing: 1971-04-26
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Granted: 1972-09-19
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Expires: 1991-04-26
Abstract
Abstract Microtome feed mechanism which provides the requisite relative motion of the specimen in relation to the sectioning tool at sectioning in a microtome. The feed mechanism comprises a body made of a rheological material arranged between that part of the microtome which is continuously fed and a component which is mainly fixed to the foundation block of the microtome, the mechanism further comprising a force generating means between the fed part and the component fixed to the foundation, from which force generating means the fed part is influenced by a substantially constant force in the feeding direction. Hence a substantially constant feeding rate is obtained due to the deformation of the body made of a rheological material. The mechanism can be arranged in such a way that the body is being compressed, extended, or sheared.
Inventors
- 👤 Bo Gosta Forsstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/06; G01N2001/065; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6492; Y10T83/6499; Y10T83/654; Y10T83/6545
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
Mechanism for providing the relative motion of the specimen in relation to the sectioning tool, requisite at sectioning in a microtome, characterized in that it comprises a body (5) made of a rheological material, which is arranged between that part (6) of the microtome which is continuously fed in the relative motion and a component (4) which is mainly fixed to the foundation, the mechanism further comprising a force generating means (13) between the fed part and the component fixed to the foundation, from which force generating component the fed part is influenced by a substantially constant force in the feeding direction, so that a substantially constant feeding rate is obtained due to the deformation of the body.
Claim 2
Dependent Claim
118 words
Mechanism for providing the relative motion of the specimen in relation to the sectioning tool, requisite at sectioning in a microtome, characterized in that it comprises a body (5) made of a rheological material, which is arranged between that part (6) of the microtome which is continuously fed in the relative motion and a component (4) which is mainly fixed to the foundation, the mechanism further comprising a force generating means (13) between the fed part and the component fixed to the foundation, from which force generating component the fed part is influenced by a substantially constant force in the feeding direction, so that a substantially constant feeding rate is obtained due to the deformation of the body.
Claim 3
Dependent Claim
39 words
Mechanism according to claim 1, characterized in that the fed part (6) and the component (4) fixed to the foundation are mutually arranged in that way that the body (5) will be compressed by the force generating means (13).
Claim 4
Dependent Claim
39 words
Mechanism according to claim 1, characterized in that the fed part (6) and the component (4) fixed to the foundation are mutually arranged in such a way that the body (5) is extended by the force generating means (13).
Claim 5
Dependent Claim
39 words
Mechanism according to claim 1, characterized in that the fed part (6) and the component (4) fixed to the foundation are mutually arranged in such a way that the body (5) is sheared by he force generating means (13).
Claim 6
Dependent Claim
23 words
Mechanism according to claim 1, characterized in that the fed part (6) constitutes a feeding arm, mechanically connected to the specimen arm (8).
Claim 7
Dependent Claim
17 words
Mechanism according to claim 1, characterized in that the foRce generating means (13) consists of a spring.
References Cited (Backward Citations)
US3564961A
Cited
US3611875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |