Patent US3691864A successfully refreshed from Google Patents.
US3691864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-y rotational positioning system
Assignee: International Business Machines Corp
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Filing: 1970-11-19
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Granted: 1972-09-19
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Expires: 1990-11-19
Abstract
Abstract An improved system is provided for positioning a circuit board with respect to wire handling and bonding apparatus. The board is movable in an X-Y plane, can be raised or lowered along a Z dimension axis, and can be rotated about the Z dimension axis. Separate X, Y, Z, and rotational dimension electric motors are mounted on a stationary base. A differential mechanism couples an X positioning mechanism to respond to the difference between the X dimension motor position and the rotational dimension motor position. The differential mechanism prevents changes in the rotational position of the X positioning mechanism from affecting the X dimension position. A similar differential mechanism couples the Y positioning mechanism to the Y drive motor and to the rotational dimension drive motor.
Inventors
- 👤 Thomas J Cochran
- 👤 Herbert K Hazel
- 👤 William G Rance Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:10
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/0015; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53039; Y10T29/53061; Y10T29/5313; Y10T29/53265; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20341; Y10T74/20348
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
A system for positioning a subject in an X dimension and for rotating said subject about a Z dimension axis, comprising: a table mounted to rotate about said axis and first means for turning said table to a selected rotational position, a first rotatable shaft extending along said axis and means mounted on said tAble and responsive to the rotation of said shaft with respect to said table for positioning said subject in the X dimension, second means rotatable according to a desired position in said X dimension, and means connected to rotate said shaft according to the difference between an input from said first means and an input from said second means, whereby said X dimension positioning means is operated according to the position of said second means independently of the rotational position of said table.
Claim 2
Independent Claim
137 words
A system for positioning a subject in an X dimension and for rotating said subject about a Z dimension axis, comprising: a table mounted to rotate about said axis and first means for turning said table to a selected rotational position, a first rotatable shaft extending along said axis and means mounted on said tAble and responsive to the rotation of said shaft with respect to said table for positioning said subject in the X dimension, second means rotatable according to a desired position in said X dimension, and means connected to rotate said shaft according to the difference between an input from said first means and an input from said second means, whereby said X dimension positioning means is operated according to the position of said second means independently of the rotational position of said table.
Claim 3
Dependent Claim
53 words
The system of claim 1 wherein: said first means comprises an electric motor responsive to a first signal to turn said table to a selected position corresponding to said signal, and said second means comprises an electric motor rotatable in response to a second signal representing said desired position in the X dimension.
Claim 4
Dependent Claim
121 words
The system of claim 2 wherein said means connected comprises: a first gear and a second gear mounted on separate, coaxial, shafts, a third gear coupled to said first and second gears and means mounting said third gear to rotate differentially, according to the relative speeds and directions of said first and second gears, about an axis offset from the axis of said first and second gears or to rotate orbitally about said axis of said first and second gears, means connecting said first gear to be turned by said first motor, means connecting said second motor to drive said means mounting said third gear to produce orbital motion, and means connecting said second gear to turn said first rotatable shaft.
Claim 5
Dependent Claim
23 words
The system of claim 3 wherein the axis of said third gear is orthogonal to the axis of said first and second gears.
Claim 6
Dependent Claim
180 words
The system of claim 3 further including: a second rotatable shaft extending along said Z dimension axis and means mounted on said table and responsive to the rotation of said second shaft with respect to said table for positioning said subject in the Y dimension, a third electric motor rotatable in response to a third signal representing a desired Y position, a fourth and a fifth gear mounted on separate coaxial shafts and a sixth gear coupled to said fourth and fifth gears and means mounting said sixth gear to rotate differentially according to the relative speeds and directions of said fourth and fifth gears about an axis orthogonal to the axis of said fourth and fifth gears or to rotate orbitally about said axis of said fourth and fifth gears, means connecting said fourth gear to be turned by said first motor as said table is rotated about said axis, means connecting said third motor to drive said means mounting said sixth gear to produce orbital motion, and means connecting said fifth gear to turn said second rotatable shaft.
References Cited (Backward Citations)
US2066949A
Cited
US3395589A
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 |