Patent US3143804A successfully refreshed from Google Patents.
US3143804A
Expired / Lapsed
US
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Interrupted line drawing system
Assignee: Raytheon Co
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Filing: 1961-12-29
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Granted: 1964-08-11
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 William J Muldoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/022; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B19/37; G05B19/371; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37462; G05B2219/42; G05B2219/42213; G05B2219/45; G05B2219/45189; G05B2219/50; G05B2219/50084; G05B2219/50109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A SYSTEM FOR DRAWING BROKEN LINES OF A SELECTED PATTERN OF LINE SEGMENTS AND SPACES IN A SYSTEM HAVING A PEN CONTROL DEVICE CONTROLLABLE BY A COSINE VOLTAGE, THE PEN HAVING A PEN CONTROL MEANS FOR HOLDING THE PEN DOWN ON A DRAWING SURFACE IN RESPONSE TO A PEN DOWN SIGNAL AND FOR LIFTING THE PEN FROM THE DRAWING SURFACE WHEN THE PEN DOWN SIGNAL IS INHIBITED, COMPRISING: A SOURCE OF SINE VOLTAGE HAVING A SIMILAR FREQUENCY TO THE COSINE VOLTAGE, CHOPPING MEANS COUPLED TO SAID SOURCE OF SINE VOLTAGE FOR CHOPPING SAID SINE VOLTAGE AT A PREDETERMINED FREQUENCY, VELOCITY SERVO MEANS COUPLED TO SAID CHOPPING MEANS FOR ROTATING AT A SINUSOIDALLY VARYING VELOCITY, COMMUTATOR MEANS COUPLED TO SAID VELOCITY SERVO MEANS AND DRIVEN THEREBY, SAID COMMUTATOR MEANS INCLUDING MEANS FOR APPLYING AN INHIBITING SIGNAL TO SAID PEN CONTROL MEANS IN THE SELECTED PATTERN OF LINE SEGMENTS AND SPACES FOR INHIBITING SAID PEN DOWN SIGNAL TO RAISE SAID PEN IN SAID PATTERN.
Claim 2
Independent Claim
162 words
A SYSTEM FOR DRAWING BROKEN LINES OF A SELECTED PATTERN OF LINE SEGMENTS AND SPACES IN A SYSTEM HAVING A PEN CONTROL DEVICE CONTROLLABLE BY A COSINE VOLTAGE, THE PEN HAVING A PEN CONTROL MEANS FOR HOLDING THE PEN DOWN ON A DRAWING SURFACE IN RESPONSE TO A PEN DOWN SIGNAL AND FOR LIFTING THE PEN FROM THE DRAWING SURFACE WHEN THE PEN DOWN SIGNAL IS INHIBITED, COMPRISING: A SOURCE OF SINE VOLTAGE HAVING A SIMILAR FREQUENCY TO THE COSINE VOLTAGE, CHOPPING MEANS COUPLED TO SAID SOURCE OF SINE VOLTAGE FOR CHOPPING SAID SINE VOLTAGE AT A PREDETERMINED FREQUENCY, VELOCITY SERVO MEANS COUPLED TO SAID CHOPPING MEANS FOR ROTATING AT A SINUSOIDALLY VARYING VELOCITY, COMMUTATOR MEANS COUPLED TO SAID VELOCITY SERVO MEANS AND DRIVEN THEREBY, SAID COMMUTATOR MEANS INCLUDING MEANS FOR APPLYING AN INHIBITING SIGNAL TO SAID PEN CONTROL MEANS IN THE SELECTED PATTERN OF LINE SEGMENTS AND SPACES FOR INHIBITING SAID PEN DOWN SIGNAL TO RAISE SAID PEN IN SAID PATTERN.
References Cited (Backward Citations)
US3042922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |