US3720849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic-kinematic precision stages
Assignee: Individual
•
Filing: 1971-06-07
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Granted: 1973-03-13
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Expires: 1991-06-07
Abstract
Abstract The application deals with a magnetic-kinematic precision stage system. The essence is, that stages with linear or angular movement are composed of at least two plates, which move with respect to each others on ball joints. The two plates are held together with retaining magnets. This solution garanties the complete elimination of the backlash. The plates may move very freely, practically without force, with respect to each other. Because practically there is no force, as consequent there is very low friction, and thus adjustement with the greatest precision is possible.
Inventors
- 👤 A Bardocz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
In an apparatus for precision adjustment comprising a first member, a second member juxtaposed to said first member, antifriction means separating said members, magnetic means urging said members towards each other and means acting between said members to move one member relative to another, said means being magnetically attached to at least one of said members.
Claim 2
Dependent Claim
56 words
In an apparatus for precision adjustment comprising a first member, a second member juxtaposed to said first member, antifriction means separating said members, magnetic means urging said members towards each other and means acting between said members to move one member relative to another, said means being magnetically attached to at least one of said members.
Claim 3
Dependent Claim
56 words
In an apparatus for precision adjustment comprising a first member, a second member juxtaposed to said first member, antifriction means separating said members, magnetic means urging said members towards each other and means acting between said members to move one member relative to another, said means being magnetically attached to at least one of said members.
Claim 4
Dependent Claim
56 words
In an apparatus for precision adjustment comprising a first member, a second member juxtaposed to said first member, antifriction means separating said members, magnetic means urging said members towards each other and means acting between said members to move one member relative to another, said means being magnetically attached to at least one of said members.
Claim 5
Dependent Claim
33 words
An apparatus as claimed in claim 1 in which the means acting between said members comprises a micro-moving means and an end of said micromoving means is magnetically attached to said one member.
Claim 6
Dependent Claim
31 words
An apparatus as claimed in claim 1 in which there is a base member and said first member is adjustable with respect to the base member by a coarse adjustment means.
Claim 7
Dependent Claim
41 words
An apparatus as claimed in claim 2 in which the second member is rotatable with respect to the first member about a vertical axis and said end of the micromoving means acts against a radially extending shoulder on said second member.
Claim 8
Dependent Claim
80 words
An apparatus as claimed in claim 2 in which a third member is juxtaposed to said second member with anti-friction means separating said second and third members and magnetic means urging said second and third members together, said third member being rotatable with respect to said second member about a vertical axis, and second micromoving means acting between said second and third members, an end of said second micromoving means acting against a radially extending shoulder on said third member.
Claim 9
Dependent Claim
76 words
An apparatus as claimed in claim 5 in which a standard is supported on said third member, a fourth member is supported for vertical adjustment on said standard and a fifth member is juxtaposed to said fourth member for rotational movement with respect thereto, said fifth member being separated from said fourth member by antifriction means and being urged towards said fourth member by magnetic means, and micromoving means acting between said fourth and fifth members.
Claim 10
Dependent Claim
40 words
An apparatus as claimed in claim 6 in which said fifth member supports an optical device for rotation about a vertical axis and said fourth member, fifth member and optical device are counterbalanced by a weight supported by flexible means.
Claim 11
Dependent Claim
114 words
An apparatus as claimed in claim 7 in which said first member is juxtaposed to a slide member, said first member and slide member being magnetically urged towards each other, micromoving means acting between said slide member and said first member to cause relative movement between them, said slide member being adapted to be adjustably mounted on a track member, the first, second and third members being horizontally positioned plate members vertically stacked on top of said slide member, the first and second members being adjustable by said micromoving means in a direction at right angles to the direction in which the micromoving means adjusts the first member with respect to the slide member.
Claim 12
Dependent Claim
16 words
An apparatus as claimed in claim 2 in which said micromoving means is a piezOelectric device.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |