Patent US3243004A successfully refreshed from Google Patents.
Patent US3358489A successfully refreshed from Google Patents.
US3358489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming bulbous articles
Assignee: AT&T Inc
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Filing: 1965-08-13
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Granted: 1967-12-19
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Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Erle M Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:08
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/041; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN AN APPARATUS FOR EXPANDING A TUBULAR BLANK, A PAIR OF DIES MOUNTED IN TELESCOPING RELATIONSHIP EACH OF SAID DIES HAVING A DIE CAVITY FORMED THEREIN MOVABLE INTO COMMUNICATION WITH EACH OTHER, A MANDREL SLIDABLY MOUNTED IN A FIRST ONE OF SAID DIES FOR SUPPORTING SAID TUBULAR BLANK, SAID MANDREL HAVING COMMUNICATING AXIAL AND RADIAL PASSAGEWAYS, MEANS FOR IMPARTING RELATIVE MOVEMENT TO SAID DIES TO MOVE SAID MANDREL SUPPORTED TUBULAR BLANK INTO ENGAGEMENT WITH SAID OTHER DIE WHEREUPON SAID MANDREL SLIDES WITHIN SAID FIRST DIE, MEANS FOR LIMITING SAID SLIDING MOVEMENT OF SAID MANDREL TO FORCE SAID TUBULAR BLANK AGAINST SAID OTHER DIE, AND MEANS RESPONSIVE TO SAID RELATIVE MOVEMENT OF SAID DIES AND RENDERED EFFECTIVE UPON OPERATION OF SAID LIMITING MEANS FOR APPLYING PRESSURIZED FLUID THROUGH SAID AXIAL AND RADIAL PASSAGEWAYS TO EXPAND SAID TUBULAR BLANK ON SAID MANDREL.
Claim 2
Dependent Claim
140 words
IN AN APPARATUS FOR EXPANDING A TUBULAR BLANK, A PAIR OF DIES MOUNTED IN TELESCOPING RELATIONSHIP EACH OF SAID DIES HAVING A DIE CAVITY FORMED THEREIN MOVABLE INTO COMMUNICATION WITH EACH OTHER, A MANDREL SLIDABLY MOUNTED IN A FIRST ONE OF SAID DIES FOR SUPPORTING SAID TUBULAR BLANK, SAID MANDREL HAVING COMMUNICATING AXIAL AND RADIAL PASSAGEWAYS, MEANS FOR IMPARTING RELATIVE MOVEMENT TO SAID DIES TO MOVE SAID MANDREL SUPPORTED TUBULAR BLANK INTO ENGAGEMENT WITH SAID OTHER DIE WHEREUPON SAID MANDREL SLIDES WITHIN SAID FIRST DIE, MEANS FOR LIMITING SAID SLIDING MOVEMENT OF SAID MANDREL TO FORCE SAID TUBULAR BLANK AGAINST SAID OTHER DIE, AND MEANS RESPONSIVE TO SAID RELATIVE MOVEMENT OF SAID DIES AND RENDERED EFFECTIVE UPON OPERATION OF SAID LIMITING MEANS FOR APPLYING PRESSURIZED FLUID THROUGH SAID AXIAL AND RADIAL PASSAGEWAYS TO EXPAND SAID TUBULAR BLANK ON SAID MANDREL.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |