Patent US3745341A successfully refreshed from Google Patents.
US3745341A
Expired / Lapsed
US
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Specimen positioning device for electron microscope and the like
Assignee: Hitachi Ltd
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Filing: 1972-08-24
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Granted: 1973-07-10
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Expires: 1992-08-24
Abstract
Abstract A specimen positioning device for an electron microscope or the like is provided which comprises a rectilinear motion mechanism and a rotating mechanism. A movable member in the rectilinear motion mechanism and a rotary member in the rotating mechanism are selectively coupled under the Coulomb force to a driven member which carries a specimen holder, so that the rectilinear or rotary motion may be transmitted to a specimen.
Inventors
- 👤 Y Sakitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:09
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
196 words
A specimen positioning device for an electron microscope or the like comprising a. means for supporting a specimen; b. a driven member into a center opening of which is fitted said specimen supporting means; c. a rectilinear motion imparting member disposed in closely spaced apart relation with said driven member on one side thereof; d. a rotary motion imparting member disposed in closely spaced apart relation with said driven member on the other side thereof; e. means drivingly coupled to said rectilinear motion imparting member for causing the fine motion thereof; f. means drivingly Coupled to said rotary motion imparting member for causing the rotation thereof; and g. a voltage source one terminal of which is connected to said driven member and the other terminal of which is selectively connected through a switch to either of said rectilinear motion imparting mechanism or said rotary motion imparting mechanism so that Coulomb electrostatic attraction is produced between said driven member and said rectilinear motion imparting member or said rotary motion imparting member, thereby causing said driven member and hence said specimen holder to move in unison with said rectilinear motion imparting member or said rotary motion imparting member.
Claim 2
Dependent Claim
196 words
A specimen positioning device for an electron microscope or the like comprising a. means for supporting a specimen; b. a driven member into a center opening of which is fitted said specimen supporting means; c. a rectilinear motion imparting member disposed in closely spaced apart relation with said driven member on one side thereof; d. a rotary motion imparting member disposed in closely spaced apart relation with said driven member on the other side thereof; e. means drivingly coupled to said rectilinear motion imparting member for causing the fine motion thereof; f. means drivingly Coupled to said rotary motion imparting member for causing the rotation thereof; and g. a voltage source one terminal of which is connected to said driven member and the other terminal of which is selectively connected through a switch to either of said rectilinear motion imparting mechanism or said rotary motion imparting mechanism so that Coulomb electrostatic attraction is produced between said driven member and said rectilinear motion imparting member or said rotary motion imparting member, thereby causing said driven member and hence said specimen holder to move in unison with said rectilinear motion imparting member or said rotary motion imparting member.
Claim 3
Dependent Claim
59 words
A specimen positioning device as set forth in claim 1 further comprising a. means for causing said rectilinear motion imparting member and said rotary motion imparting member to rotate in unison with each other about an axis other than the axis of said rotary motion imparting member, thereby causing said driven member and hence said specimen holder to tilt.
Claim 4
Dependent Claim
42 words
A specimen positioning device as set forth in claim 1 wherein on the side surfaces of said rectilinear motion imparting member and said rotary motion imparting member in opposed relation with said driven disk are fixed members made of semiconductive ferroelectric material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |