US3176458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bobbin doffing mechanism
Assignee: Draper Corp
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Filing: 1962-11-13
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Granted: 1965-04-06
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Dubois
- 👤 John A Cugini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
D; D01; D01H; D01H9/00; D01H9/02; D01H9/08; D01H9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A DOFFING MECHANISM ADAPTED TO REMOVE BOBBINS FROM A ROW OF SPINDLES SUPPORTED ON A MACHINE COMPRISING A CARRIAGE WITH MEANS FOR MOUNTING THE LATTER ON SAID MACHINE TO MOVE ALONG A PATH PARALLEL TO SAID SPINDLES, SAID DOFFING MECHANISM INCLUDING TWO PRINCIPAL DOFFING UNITS, THE FIRST, A COMBINED DRIVE BREAKING CAM AND A BOBBIN RAISING CAM, AND THE SECOND, A FLEXIBLE INCLINED LIFTING GUIDE MEMBER YIELDABLY URGED INTO ENGAGEMENT WITH SAID SPINDLES AND ADAPTED TO SERPENTINE THE SAME THEREAROUND AS SAID GUIDE MEMBER MOVES PAST SAID SPINDLES, SAID FIRST DOFFING UNIT INCLUDING A FIRST CAMMING SURFACE AT AN INCLINATION TO THE HORIZONTAL AND A SECOND CAMMING SURFACE CONTIGUOUS WITH AND AT A GREATER SURFACE CLINATION TO THE HORIZONTAL AND A SECOND CAMMING SURFACE CONTIGUOUS WITH AND AT A GREATER INCLINATION THAN SAID FIRST CAMMING SURFACE, SAID SECOND DOFFING UNIT INCLUDING A FURTHER CAMMING SURFACE AT AN INCLINATION GREATER THAN THOSE OF SAID FIRST DOFFING UNIT.
Claim 2
Dependent Claim
156 words
A DOFFING MECHANISM ADAPTED TO REMOVE BOBBINS FROM A ROW OF SPINDLES SUPPORTED ON A MACHINE COMPRISING A CARRIAGE WITH MEANS FOR MOUNTING THE LATTER ON SAID MACHINE TO MOVE ALONG A PATH PARALLEL TO SAID SPINDLES, SAID DOFFING MECHANISM INCLUDING TWO PRINCIPAL DOFFING UNITS, THE FIRST, A COMBINED DRIVE BREAKING CAM AND A BOBBIN RAISING CAM, AND THE SECOND, A FLEXIBLE INCLINED LIFTING GUIDE MEMBER YIELDABLY URGED INTO ENGAGEMENT WITH SAID SPINDLES AND ADAPTED TO SERPENTINE THE SAME THEREAROUND AS SAID GUIDE MEMBER MOVES PAST SAID SPINDLES, SAID FIRST DOFFING UNIT INCLUDING A FIRST CAMMING SURFACE AT AN INCLINATION TO THE HORIZONTAL AND A SECOND CAMMING SURFACE CONTIGUOUS WITH AND AT A GREATER SURFACE CLINATION TO THE HORIZONTAL AND A SECOND CAMMING SURFACE CONTIGUOUS WITH AND AT A GREATER INCLINATION THAN SAID FIRST CAMMING SURFACE, SAID SECOND DOFFING UNIT INCLUDING A FURTHER CAMMING SURFACE AT AN INCLINATION GREATER THAN THOSE OF SAID FIRST DOFFING UNIT.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |