Patent US3582956A successfully refreshed from Google Patents.
US3582956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording and reproducing handwriting
Assignee: Individual
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Filing: 1968-07-08
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Granted: 1971-06-01
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Expires: 1988-07-08
Abstract
Abstract Apparatus for recording and reproducing handwriting comprising a tape recorder for recording handwriting signals from the tap of a potentiometer corresponding to movement of a pen in a first direction, from the tap of another potentiometer corresponding to movement of the pen in a second direction perpendicular to the first direction, from a reference supply which supplies signals to the potentiometers, and from a switch corresponding to movement of the pen in a third direction perpendicular to the first and second directions, and pen operating apparatus for reproducing the handwriting in accordance with the signals recorded in the tap recorder.
Inventors
- 👤 Harvey L Huston
- 👤 Donald K Belcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:10
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/485; B41J2/49
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
282 words
In an apparatus for recording and reproducing handwriting comprising, a writing instrument, support means to support said writing instrument for movement in three directions, means for sensing the movement of said supporting means comprising a first potentiometer sensing the first direction of movement, a second potentiometer sensing the second direction of movement and switch means sensing the third direction of movement, second means for causing movement of said support means comprising a first servomotor for causing movement in a first direction, a second servomotor for causing movement in a second direction and motive means for causing movement in a third direction, said servomotors being mechanically linked to said potentiometers and each having a reference winding and a control winding, a source of reference signals, tape recorder means comprising a first recording head recording the first direction of movement, a second recording head recording the second direction of movement, a third recording head recording the third direction of movement, and a fourth recording head for recording the reference signals, circuit means having a recording state and a reproducing state for connecting during the said recording state, said first potentiometer to said first recording head, said second potentiometer to said second recording head, and said reference source to said first and second potentiometer and to said third recording head controlled by said switch means and to said forth recording head, said circuit means during said reproducing state connecting said first head to said control winding of said first servomotor, said second recording head to said control winding of said second servomotor, said third recording head to said motive means, and said fourth recording head to said reference windings of said first and second servomotor.
Claim 2
Dependent Claim
282 words
In an apparatus for recording and reproducing handwriting comprising, a writing instrument, support means to support said writing instrument for movement in three directions, means for sensing the movement of said supporting means comprising a first potentiometer sensing the first direction of movement, a second potentiometer sensing the second direction of movement and switch means sensing the third direction of movement, second means for causing movement of said support means comprising a first servomotor for causing movement in a first direction, a second servomotor for causing movement in a second direction and motive means for causing movement in a third direction, said servomotors being mechanically linked to said potentiometers and each having a reference winding and a control winding, a source of reference signals, tape recorder means comprising a first recording head recording the first direction of movement, a second recording head recording the second direction of movement, a third recording head recording the third direction of movement, and a fourth recording head for recording the reference signals, circuit means having a recording state and a reproducing state for connecting during the said recording state, said first potentiometer to said first recording head, said second potentiometer to said second recording head, and said reference source to said first and second potentiometer and to said third recording head controlled by said switch means and to said forth recording head, said circuit means during said reproducing state connecting said first head to said control winding of said first servomotor, said second recording head to said control winding of said second servomotor, said third recording head to said motive means, and said fourth recording head to said reference windings of said first and second servomotor.
Claim 3
Dependent Claim
40 words
The invention as recited in claim 1 wherein said circuit means includes negative feedback paths interconnecting said first potentiometer to said first servomotor, and said second potentiometer to said second servomotor when said circuit means is in said reproduce state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |