Patent US3175295A successfully refreshed from Google Patents.
US3175295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for making optically correct perspective drawings
Assignee: LOMART Manufacturing CORP
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Filing: 1961-09-13
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Granted: 1965-03-30
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Expires: 1981-09-13
Abstract
No abstract record available.
Inventors
- 👤 Selley Wilbur-Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:36
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PERSPECTIVE DRAWING MACHINE FOR THE RAPID EXECUTION OF OPTIONALLY CORRECT PERSPECTIVE DRAWINGS FROM AT LEAST ONE ORTHOGRAPHIC PROJECTION, COMPRISING A WORK TABLE FOR RECEIVING VIEWS TO BE COPIED, AN OUTBOARD TABLE TO WHICH A PERSPECTIVE DRAWING OF THE VIEW MAY BE TRANSFERRED, MEANS FOR SUPPORTING SAID OUTBOARD TABLE IN SUCH A MANNER WITH RESPECT TO SAID WORK TABLE THAT THE HEIGHT RELATION BETWEEN THE WORK-RECEIVING SURFACES OF SAID TABLES AS WELL AS THE ANGULAR RELATION BETWEEN SAID SURFACES CAN BE SELECTIVELY VARIED, AND MEANS SUPPORTED BY SAID OUTBOARD TABLE SUPPORTING MEANS FOR TRANSFERRING THE INTELLIGENCE FROM SAID WORK TABLE TO SAID OUTBOARD TABLE, SAID INTELLIGENCE TRANSFERRING MEANS BEING ESSENTIALLY PERPENDICULAR TO SAID OUTBOARD TABLE AND TOGETHER THEREWITH AN EFFECT SERVING AS A TYPE OF VIEWING AND RECORDING MEANS, WHEREBY A PERSPECTIVE VIEW HAVING A DESIRED PERSPECTIVE ANGLE MAY BE CREATED FROM AN ORTHOGRAPHIC PROJECTION.
Claim 2
Dependent Claim
145 words
A PERSPECTIVE DRAWING MACHINE FOR THE RAPID EXECUTION OF OPTIONALLY CORRECT PERSPECTIVE DRAWINGS FROM AT LEAST ONE ORTHOGRAPHIC PROJECTION, COMPRISING A WORK TABLE FOR RECEIVING VIEWS TO BE COPIED, AN OUTBOARD TABLE TO WHICH A PERSPECTIVE DRAWING OF THE VIEW MAY BE TRANSFERRED, MEANS FOR SUPPORTING SAID OUTBOARD TABLE IN SUCH A MANNER WITH RESPECT TO SAID WORK TABLE THAT THE HEIGHT RELATION BETWEEN THE WORK-RECEIVING SURFACES OF SAID TABLES AS WELL AS THE ANGULAR RELATION BETWEEN SAID SURFACES CAN BE SELECTIVELY VARIED, AND MEANS SUPPORTED BY SAID OUTBOARD TABLE SUPPORTING MEANS FOR TRANSFERRING THE INTELLIGENCE FROM SAID WORK TABLE TO SAID OUTBOARD TABLE, SAID INTELLIGENCE TRANSFERRING MEANS BEING ESSENTIALLY PERPENDICULAR TO SAID OUTBOARD TABLE AND TOGETHER THEREWITH AN EFFECT SERVING AS A TYPE OF VIEWING AND RECORDING MEANS, WHEREBY A PERSPECTIVE VIEW HAVING A DESIRED PERSPECTIVE ANGLE MAY BE CREATED FROM AN ORTHOGRAPHIC PROJECTION.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |