Patent US3171767A successfully refreshed from Google Patents.
Patent US3327767A successfully refreshed from Google Patents.
US3327767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making cored casting molds
Assignee: HERMAN Corp A PA CORP
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Filing: 1965-06-18
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Granted: 1967-06-27
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Charles M G Wallwork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:53
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/10; B22C9/108; B22C11/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
311 words
A METHOD OF MAKING CORED CASTING MOULDS COMPRISING THE STEPS OF FORMING A FIRST DOUBLE SIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF, EACH OF SAID MOULD SURFACES FORMING A PART OF A CASTING CAVITY AND AT LEAST ONE OF THEM BEING IN THE FORM OF A DEPRESSION IN ITS RESPECTIVE SIDE OF THE MOULD; BLOWING A CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID MOULD; MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THE MOULD WITH THE CORE ENGAGING IN SAID DEPRESSIONS ON ONE SIDE OF SAID MOULD; WITHDRAWING SAID CORE-BOX PART FROM SAID MOULD WHILE SIMULTANEOUSLY URGING SAID COREBOX PART AND SAID CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID DEPRESSION IN SAID MOULD; FORMING A SECOND DOUBLE SIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF; MOVING SAID SECOND MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY WITHIN WHICH SAID CORE REMAINS; BLOWING A SECOND CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID FIRST AND SECOND MOULDS; MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THAT SIDE OF THE SECOND MOULD REMOTE FROM SAID FIRST MOULD AND WITH THE CORE ENGAGING IN THE DEPRESSION ON THAT SIDE OF SAID SECOND MOULD REMOTE FROM SAID FIRST MOULD; WITHDRAWING SAID CORE-BOX FROM SAID SECOND MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID CASTING CAVITY; FORMING A THIRD DOUBLE SIDED SANDMOULD; AND MOVING SAID THIRD MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY OF SAID SECOND MOULD, THE FOREGOING PROCESS BEING CONTINUED INDEFINITELY WITH SUCCESSIVE CORES AND MOULDS.
Claim 2
Independent Claim
311 words
A METHOD OF MAKING CORED CASTING MOULDS COMPRISING THE STEPS OF FORMING A FIRST DOUBLE SIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF, EACH OF SAID MOULD SURFACES FORMING A PART OF A CASTING CAVITY AND AT LEAST ONE OF THEM BEING IN THE FORM OF A DEPRESSION IN ITS RESPECTIVE SIDE OF THE MOULD; BLOWING A CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID MOULD; MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THE MOULD WITH THE CORE ENGAGING IN SAID DEPRESSIONS ON ONE SIDE OF SAID MOULD; WITHDRAWING SAID CORE-BOX PART FROM SAID MOULD WHILE SIMULTANEOUSLY URGING SAID COREBOX PART AND SAID CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID DEPRESSION IN SAID MOULD; FORMING A SECOND DOUBLE SIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF; MOVING SAID SECOND MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY WITHIN WHICH SAID CORE REMAINS; BLOWING A SECOND CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID FIRST AND SECOND MOULDS; MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THAT SIDE OF THE SECOND MOULD REMOTE FROM SAID FIRST MOULD AND WITH THE CORE ENGAGING IN THE DEPRESSION ON THAT SIDE OF SAID SECOND MOULD REMOTE FROM SAID FIRST MOULD; WITHDRAWING SAID CORE-BOX FROM SAID SECOND MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID CASTING CAVITY; FORMING A THIRD DOUBLE SIDED SANDMOULD; AND MOVING SAID THIRD MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY OF SAID SECOND MOULD, THE FOREGOING PROCESS BEING CONTINUED INDEFINITELY WITH SUCCESSIVE CORES AND MOULDS.
Claim 3
Dependent Claim
303 words
APPARATUS FOR MAKING CORED CASTING MOULDS COMPRISING MEANS FOR FORMING A DOUBLE-SIDED SAND-CASTING MOULD HAVING A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES, EACH OF SAID SURFACES BEING A PART OF A CASTING CAVITY AND HAVING AT LEAST ONE DEPRESSION THEREIN, MEANS FOR BLOWING AT LEAST ONE CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID MOULD, MEANS FOR MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THE MOULD WITH THE CORE ENGAGING IN SAID DEPRESSION ON ONE SIDE OF SAID MOULD, MEANS FOR WITHDRAWING SAID CORE-BOX PART FROM SAID MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND SAID CORE APART WHEREBY SAID CORE REMAINS IN SAID DEPRESSION IN SAID MOULD, MEANS FOR FORMING A SECOND DOUBLESIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF, MEANS FOR MOVING SAID SECOND MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY WITHIN WHICH SAID CORE REMAINS, MEANS FOR BLOWING A SECOND CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID FIRST AND SECOND MOULDS, MEANS FOR MOVING AT LEAST A PART OF SAID LAST-MENTIONED CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THAT SIDE OF THE SECOND MOULD REMOTE FROM SAID FIRST MOULD AND WITH THE CORE ENGAGING IN THE DEPRESSION ON THAT SIDE OF SAID SECOND MOULD OR REMOTE FROM SAID FIRST MOULD, MEANS FOR WITHDRAWING SAID LAST-MENTINED COREBOX FROM SAID SECOND MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND SAID CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID CASTING CAVITY, MEANS FOR FORMING A THIRD DOUBLE-SIDED SAND-MOULD AND MEANS FOR MOVING SAID THIRD MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY OF SAID SECOND MOULD.
Claim 4
Dependent Claim
303 words
APPARATUS FOR MAKING CORED CASTING MOULDS COMPRISING MEANS FOR FORMING A DOUBLE-SIDED SAND-CASTING MOULD HAVING A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES, EACH OF SAID SURFACES BEING A PART OF A CASTING CAVITY AND HAVING AT LEAST ONE DEPRESSION THEREIN, MEANS FOR BLOWING AT LEAST ONE CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID MOULD, MEANS FOR MOVING AT LEAST A PART OF SAID CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THE MOULD WITH THE CORE ENGAGING IN SAID DEPRESSION ON ONE SIDE OF SAID MOULD, MEANS FOR WITHDRAWING SAID CORE-BOX PART FROM SAID MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND SAID CORE APART WHEREBY SAID CORE REMAINS IN SAID DEPRESSION IN SAID MOULD, MEANS FOR FORMING A SECOND DOUBLESIDED SAND-MOULD WITH A MOULD SURFACE ON EACH OF TWO OPPOSITE SIDES THEREOF, MEANS FOR MOVING SAID SECOND MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY WITHIN WHICH SAID CORE REMAINS, MEANS FOR BLOWING A SECOND CORE IN A CAVITY OF A CORE-BOX AT A POSITION DISPLACED FROM SAID FIRST AND SECOND MOULDS, MEANS FOR MOVING AT LEAST A PART OF SAID LAST-MENTIONED CORE-BOX WITH SAID CORE TO A POSITION IN WHICH IT LIES ADJACENT TO THAT SIDE OF THE SECOND MOULD REMOTE FROM SAID FIRST MOULD AND WITH THE CORE ENGAGING IN THE DEPRESSION ON THAT SIDE OF SAID SECOND MOULD OR REMOTE FROM SAID FIRST MOULD, MEANS FOR WITHDRAWING SAID LAST-MENTINED COREBOX FROM SAID SECOND MOULD WHILE SIMULTANEOUSLY URGING SAID CORE-BOX PART AND SAID CORE APART WHEREBY TO CAUSE SAID CORE TO REMAIN IN SAID CASTING CAVITY, MEANS FOR FORMING A THIRD DOUBLE-SIDED SAND-MOULD AND MEANS FOR MOVING SAID THIRD MOULD TO A POSITION IN WHICH IT COMPLETES SAID CASTING CAVITY OF SAID SECOND MOULD.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |