US3256572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die casting apparatus with positive sprue removal
Assignee: Fisher Gauge Works Ltd
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Filing: 1963-06-13
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Granted: 1966-06-21
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Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 William F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:00
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/2076; B22D17/22; B22D17/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
DIE CASTING APPARATUS HAVING IN COMBINATION; A DIE CARRIER, FIXED AND MOVABLE DIE PARTS ON SAID CARRIER, SAID FIXED PART HAVING A CAVITY, A GATE CENTRALLY AND AXIALLY CONNECTING SAID CAVITY TO A LOWER SURFACE OF SAID FIXED DIE PART; A MELTING POT FOR CASTING METAL, A PUMP IMMERSED IN SAID POT, A NOZZLE CONNECTED TO SAID PUMP PROTRUDING ABOVE THE LEVEL OF METAL IN THE POT AND SHAPED TO MATE WITH SAID GATE, MEANS SUPPORTING SAID CARRIER FOR COMBINED AXIAL AND LATERAL MOVEMENT AWAY FROM SAID NOZZLE TO A TERMINAL POSITION WITH THE GATE VERTICALLY ABOVE THE SURFACE OF METAL IN SAID POT, A CORE-PUNCH AXIALLY MOVABLE IN SAID MOVABLE DIE PART AND SIZED TO CLOSELY ENGAGE THE WALLS OF SAID GATE TO EJECT THE SPRUE THEREFROM FORMED ON SEPARATION OF THE GATE FROM SAID NOZZLE.
Claim 2
Dependent Claim
137 words
DIE CASTING APPARATUS HAVING IN COMBINATION; A DIE CARRIER, FIXED AND MOVABLE DIE PARTS ON SAID CARRIER, SAID FIXED PART HAVING A CAVITY, A GATE CENTRALLY AND AXIALLY CONNECTING SAID CAVITY TO A LOWER SURFACE OF SAID FIXED DIE PART; A MELTING POT FOR CASTING METAL, A PUMP IMMERSED IN SAID POT, A NOZZLE CONNECTED TO SAID PUMP PROTRUDING ABOVE THE LEVEL OF METAL IN THE POT AND SHAPED TO MATE WITH SAID GATE, MEANS SUPPORTING SAID CARRIER FOR COMBINED AXIAL AND LATERAL MOVEMENT AWAY FROM SAID NOZZLE TO A TERMINAL POSITION WITH THE GATE VERTICALLY ABOVE THE SURFACE OF METAL IN SAID POT, A CORE-PUNCH AXIALLY MOVABLE IN SAID MOVABLE DIE PART AND SIZED TO CLOSELY ENGAGE THE WALLS OF SAID GATE TO EJECT THE SPRUE THEREFROM FORMED ON SEPARATION OF THE GATE FROM SAID NOZZLE.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |