US2846377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold cavities and force plugs
Assignee: JACKSON K LYTLE
•
Filing: 1952-10-28
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Granted: 1958-08-05
•
Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 Aylmer O Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:46
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS FOR ELECTROFORMING A METAL MOLD FOR CASTING FROM A PATTERN OF THE SIZE AND SHAPE DESIRED FOR THE CASTINGS, COMPRISING, ELECTRODEPOSITING A FIRST SHELL OF COPPER ON THE FACE OF SAID PATTERN WHICH IS TO BE REPRODUCED, REMOVING SAID PATTERN FROM SAID COPPER SHELL, ELECTRODEPOSITING A SECOND COPPER SHELL UPON THE PATTERN FACE OF THE FIRST COPPER SHELL, PLACING SAID COPPER SHELL FROM SAID FIRST COPPER SHELL, PLACING SAID COPPER SHELL IN A SUBSTANTIALLY RECTANGULAR SHAPED AND OPEN-ENDED METAL CASTING, THEN ELECTRODEPOSITING A SHELL OF NICKEL UPON THE PATTERN FACE OF SAID SECOND COPPER SHELL AND SAID METAL CASTING TO RIGIDLY CONNECT SAID NICKEL SHELL TO SAID METAL CASTING, REMOVING SAID SECOND COPPER SHELL FROM SAID NICKEL SHELL, AND THEN FILLING IN THE REAR SURFACE OF SAID NICKEL SHELL AND CASTING TO STRENGTHEN AND REINFORCE SAID NICKEL SHELL WITHIN SAID METAL CASTING, WHEREBY THE COMPLETED MOLD IS FORMED.
Claim 2
Dependent Claim
150 words
A PROCESS FOR ELECTROFORMING A METAL MOLD FOR CASTING FROM A PATTERN OF THE SIZE AND SHAPE DESIRED FOR THE CASTINGS, COMPRISING, ELECTRODEPOSITING A FIRST SHELL OF COPPER ON THE FACE OF SAID PATTERN WHICH IS TO BE REPRODUCED, REMOVING SAID PATTERN FROM SAID COPPER SHELL, ELECTRODEPOSITING A SECOND COPPER SHELL UPON THE PATTERN FACE OF THE FIRST COPPER SHELL, PLACING SAID COPPER SHELL FROM SAID FIRST COPPER SHELL, PLACING SAID COPPER SHELL IN A SUBSTANTIALLY RECTANGULAR SHAPED AND OPEN-ENDED METAL CASTING, THEN ELECTRODEPOSITING A SHELL OF NICKEL UPON THE PATTERN FACE OF SAID SECOND COPPER SHELL AND SAID METAL CASTING TO RIGIDLY CONNECT SAID NICKEL SHELL TO SAID METAL CASTING, REMOVING SAID SECOND COPPER SHELL FROM SAID NICKEL SHELL, AND THEN FILLING IN THE REAR SURFACE OF SAID NICKEL SHELL AND CASTING TO STRENGTHEN AND REINFORCE SAID NICKEL SHELL WITHIN SAID METAL CASTING, WHEREBY THE COMPLETED MOLD IS FORMED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |