Patent US3316644A successfully refreshed from Google Patents.
US3316644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting machine
Assignee: Keuffel and Esser Co
•
Filing: 1960-07-18
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Granted: 1967-05-02
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Allister L Baker
- 👤 William R Krause
- 👤 William J Drexler
- 👤 Zener Frederick Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/20; B43L13/201; B43L13/208; B43L13/02; B43L13/04; B43L13/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
A DRAFTING MACHINE AND DRAFTING BOARD ADAPTED FOR USE IN HORIZONTAL AND INCLINED POSITIONS COMPRISING A FIRST CYLINDRICAL RAIL MOUNTED ON A DRAFTING BOARD, A FIRST CARRIAGE INCLUDING AN ELONGATED C-SHAPED SLEEVE MOUNTED FOR MOVEMENT ALONG AND FOR ANGULAR ROTATION ABOUT THE CYLINDRICAL RAIL, MEANS TO SUPPORT SAID CYLINDRICAL RAIL ON THE DRAFTING BOARD ADJACENT THE ENDS, INTERMEDIATE SUPPORT MEANS FOR SAID CYLINDRICAL RAIL INCLUDING NARROW STRUTS EXTENDING RADIALLY FROM SAID RAIL, EACH STRUT BEING OF SMALLER TRANSVERSE DIMENSION THAN THE SLOT IN SAID CSHAPED SLEEVE AND EACH STRUT BEING POSITIONED TO BE RECEIVED IN THE SLOT OPENING IN SAID C-SHAPED SLEEVE, STRUT SUPPORT MEANS MOUNTED ON SAID DRAFTING BOARD AND SUPPORTING SAID STRUTS, A ROLLER ASSEMBLY MOUNTED ON SAID CSHAPED SLEEVE ADJACENT EACH END THEREOF, EACH ROLLER ASSEMBLY INCLUDING A PAIR OF GENERALLY CYLINDRICAL ROLLERS SPACED APART SUBSTANTIALLY LESS THAN 180 DEGREES AND LOCATED ON ONE SIDE OF THE C-SHAPED SLEEVE AND ENGAGING THE CYLINDRICAL RAIL ON ONE SIDE OF THE RAIL, AND AT LEAST ANOTHER GENERALLY CYLINDRICAL ROLLER POSITIONED ON THE OTHER SIDE OF SAID C-SHAPED SLEEVE AND ENGAGING THE OTHER SIDE OF SAID RAIL, SAID AT LEAST ANOTHER ROLLER BEING SPACED AN AMOUNT APPRECIABLY LESS THAN 180 DEGREES FROM AN ADJACENT ROLLER, RESILIENT MEANS URGING SAID AT LEAST ANOTHER ROLLER TOWARD SAID ONE SIDE OF SAID C-SHAPED SLEEVE AND TOWARD SAID RAIL, EACH GENERALLY CYLINDRICAL ROLLER BEING MOUNTED FOR ROTATION ON AN AXIS LYING IN A
Claim 2
Dependent Claim
239 words
A DRAFTING MACHINE AND DRAFTING BOARD ADAPTED FOR USE IN HORIZONTAL AND INCLINED POSITIONS COMPRISING A FIRST CYLINDRICAL RAIL MOUNTED ON A DRAFTING BOARD, A FIRST CARRIAGE INCLUDING AN ELONGATED C-SHAPED SLEEVE MOUNTED FOR MOVEMENT ALONG AND FOR ANGULAR ROTATION ABOUT THE CYLINDRICAL RAIL, MEANS TO SUPPORT SAID CYLINDRICAL RAIL ON THE DRAFTING BOARD ADJACENT THE ENDS, INTERMEDIATE SUPPORT MEANS FOR SAID CYLINDRICAL RAIL INCLUDING NARROW STRUTS EXTENDING RADIALLY FROM SAID RAIL, EACH STRUT BEING OF SMALLER TRANSVERSE DIMENSION THAN THE SLOT IN SAID CSHAPED SLEEVE AND EACH STRUT BEING POSITIONED TO BE RECEIVED IN THE SLOT OPENING IN SAID C-SHAPED SLEEVE, STRUT SUPPORT MEANS MOUNTED ON SAID DRAFTING BOARD AND SUPPORTING SAID STRUTS, A ROLLER ASSEMBLY MOUNTED ON SAID CSHAPED SLEEVE ADJACENT EACH END THEREOF, EACH ROLLER ASSEMBLY INCLUDING A PAIR OF GENERALLY CYLINDRICAL ROLLERS SPACED APART SUBSTANTIALLY LESS THAN 180 DEGREES AND LOCATED ON ONE SIDE OF THE C-SHAPED SLEEVE AND ENGAGING THE CYLINDRICAL RAIL ON ONE SIDE OF THE RAIL, AND AT LEAST ANOTHER GENERALLY CYLINDRICAL ROLLER POSITIONED ON THE OTHER SIDE OF SAID C-SHAPED SLEEVE AND ENGAGING THE OTHER SIDE OF SAID RAIL, SAID AT LEAST ANOTHER ROLLER BEING SPACED AN AMOUNT APPRECIABLY LESS THAN 180 DEGREES FROM AN ADJACENT ROLLER, RESILIENT MEANS URGING SAID AT LEAST ANOTHER ROLLER TOWARD SAID ONE SIDE OF SAID C-SHAPED SLEEVE AND TOWARD SAID RAIL, EACH GENERALLY CYLINDRICAL ROLLER BEING MOUNTED FOR ROTATION ON AN AXIS LYING IN A
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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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |