US3285835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electroforming split glassware molds
Assignee: OI Glass Inc
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Filing: 1963-04-29
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Granted: 1966-11-15
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Farrow Tom Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/30; C03B9/48; B; B29; B29C; B29C33/00; B29C33/38; B29C33/3842
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
IN THE METHOD OF ELECTROFORMING A SPLIT, GLASS FORMING MOLD FROM A MASTER HAVING THE EXTERNAL SHAPE OF THE ARTICLES TO BE FORMED IN THE MOLD BUT WITH ADDED MATERIAL COINCIDENT WITH THE PARTING LINE MAKING THE MASTER WIDER THAN THE MOLD CAVITY OF THE GLASS FORMING MOLD, THE STEPS INCLUDING MAKING A PAIR OF MATCHING FEMALE EPOXY MOLD HALVES FROM THE MASTER WITH PRECISELY FORMED SLOTS IN THE ENDS THEREOF, PLACING A CONDUCTIVE MEMBER ALONG THE AXIS OF ONE OF SAID FEMALE EPOXY MOLD HALVES, PLACING A CONDUCTIVE SHEET HAVING A CONTOUR SIMILAR TO THE DIAMETRICAL CAVITY CONTOUR OVER THE CAVITY OPENING, CONNECTING THE SHEET TO THE CONDUCTIVE MEMBER, PLACING THE OTHER EPOXY MOLD HALF OVER THE ONE MOLD HALF THEREBY FORMING A CAVITY, FORMING A MANDREL WITHIN THE CAVITY OF THE FEMALE EPOXY MOLD, REMOVING THE MANDREL FROM THE MOLD, EXPOSING THE EDGE OF THE SHEET AT THE SURFACE OF THE MANDREL AND PLACING NON-CONDUCTING DISKS OVER THE CONDUCTING MEMBER WITH THE DISKS ABUTTING THE ENDS OF THE MANDREL.
Claim 2
Dependent Claim
171 words
IN THE METHOD OF ELECTROFORMING A SPLIT, GLASS FORMING MOLD FROM A MASTER HAVING THE EXTERNAL SHAPE OF THE ARTICLES TO BE FORMED IN THE MOLD BUT WITH ADDED MATERIAL COINCIDENT WITH THE PARTING LINE MAKING THE MASTER WIDER THAN THE MOLD CAVITY OF THE GLASS FORMING MOLD, THE STEPS INCLUDING MAKING A PAIR OF MATCHING FEMALE EPOXY MOLD HALVES FROM THE MASTER WITH PRECISELY FORMED SLOTS IN THE ENDS THEREOF, PLACING A CONDUCTIVE MEMBER ALONG THE AXIS OF ONE OF SAID FEMALE EPOXY MOLD HALVES, PLACING A CONDUCTIVE SHEET HAVING A CONTOUR SIMILAR TO THE DIAMETRICAL CAVITY CONTOUR OVER THE CAVITY OPENING, CONNECTING THE SHEET TO THE CONDUCTIVE MEMBER, PLACING THE OTHER EPOXY MOLD HALF OVER THE ONE MOLD HALF THEREBY FORMING A CAVITY, FORMING A MANDREL WITHIN THE CAVITY OF THE FEMALE EPOXY MOLD, REMOVING THE MANDREL FROM THE MOLD, EXPOSING THE EDGE OF THE SHEET AT THE SURFACE OF THE MANDREL AND PLACING NON-CONDUCTING DISKS OVER THE CONDUCTING MEMBER WITH THE DISKS ABUTTING THE ENDS OF THE MANDREL.
Claim 3
Dependent Claim
73 words
A MANDREL FOR USE IN ELECTROFORMING SPLIT MOLDS COMPRISING, A PLASTIC MEMBER HAVING THE EXTERNAL SHAPE OF THE MOLD TO BE FORMED, SAID MEMBER BEING SLIGHTLY WIDER THAN THE SPLIT MOLD WHOSE CAVITY IT IS TO FORM, A CONDUCTIVE MEMBER EXTENDING AXIALLY THROUGH SAID PLASTIC MEMBER, A CONDUCTIVE SHEET CONNECTED TO SAID CONDUCTIVE MEMBER AND EXTENDING THROUGH AND TO THE SURFACE OF THE PLASTIC MEMBER TO EXPOSE THE EDGES OF SAID CONDUCTIVE SHEET.
Claim 4
Dependent Claim
73 words
A MANDREL FOR USE IN ELECTROFORMING SPLIT MOLDS COMPRISING, A PLASTIC MEMBER HAVING THE EXTERNAL SHAPE OF THE MOLD TO BE FORMED, SAID MEMBER BEING SLIGHTLY WIDER THAN THE SPLIT MOLD WHOSE CAVITY IT IS TO FORM, A CONDUCTIVE MEMBER EXTENDING AXIALLY THROUGH SAID PLASTIC MEMBER, A CONDUCTIVE SHEET CONNECTED TO SAID CONDUCTIVE MEMBER AND EXTENDING THROUGH AND TO THE SURFACE OF THE PLASTIC MEMBER TO EXPOSE THE EDGES OF SAID CONDUCTIVE SHEET.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |