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
•
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
2026-10-29 09:13
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
References Cited (Backward Citations)
FR377676A
Cited
US1251528A
Cited
US1436673A
Cited
US2091288A
Cited
US2102636A
Cited
US2029899A
Cited
US2242827A
Cited
US2616179A
Cited
FR991861A
Cited
DE963127C
Cited
GB752154A
Cited
GB754445A
Cited
US2834435A
Cited
US2829739A
Cited
US2903307A
Cited
FR1239139A
Cited
US2992048A
Cited
US3043634A
Cited
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 |