US4579632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-formed structures
Assignee: Individual
•
Filing: 1985-04-01
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Granted: 1986-04-01
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Expires: 2005-04-01
Abstract
Abstract A system of electro-forming by creating the shape to be electro-formed of a polystyrene or other material. The formed shape is then coated with a carbonizable resin and then carbonized, vaporizing the internal form to create a shell which is then metal-plated to form the desired structure.
Inventors
- 👤 Gregory R. Brotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:05
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
An improved electro-forming process for a plating to form a structure, comprising: forming a molding of expanded polystyrene; coating said molding with a carbonizable resin; carbonizing said resin; vaporizing said polystyrene; and plating said carbon to form a structure.
Claim 2
Dependent Claim
39 words
An improved electro-forming process for a plating to form a structure, comprising: forming a molding of expanded polystyrene; coating said molding with a carbonizable resin; carbonizing said resin; vaporizing said polystyrene; and plating said carbon to form a structure.
Claim 3
Dependent Claim
125 words
The process of claim 1 wherein said process is continuous and further includes the steps of: entering polystyrene beads into a continous molding belt; heating said beads in order to expand them; molding said beads into a shape; coating said formed polystyrene shape with a carbonizable resin spray solution; depositing resin particulate thereon; entering said structure into a carbonizing furnace; heating said structure at increasing levels of temperature; driving the solvents out of said resin; curing said resin by said increasing temperature; carbonizing said resin by said heating; melting said shaped beads; entering said resulting carbon structure into a plating chamber; entering electro-plating spray into said chamber; coating said structure with said electro-plating spray; and passing electric current through said structure and said electro-plating spray.
Claim 4
Dependent Claim
18 words
The method of claim 2 further including the step of entering a noble gas within said plating chamber.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein said expanded polystyrene is replaced by a carbonizable foam material.
References Cited (Backward Citations)
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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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |