US5337631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing tools and dies
Assignee: SPRAYFORM TOOLS AND DIES Ltd
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Filing: 1991-07-30
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Granted: 1994-08-16
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Expires: 2011-07-30
Abstract
Abstract Tools and dies are made from a master pattern by making a hard chromium electroformed shell from the pattern, supporting the pattern and filling it with tool steel which applied by spray deposition of molten particles, the deposit being continuously densified by peening as it is made.
Inventors
- 👤 Alfred R. E. Singer
- 👤 Joseph McGeough
- 👤 Allen D. Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:08
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185; B; B33; B33Y; B33Y80/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
A method of producing a tool or die from a pattern, comprising making an electroform from the pattern and filling the electroform to make the tool or die, characterised in that the electroform is filled by spraying, onto it, molten atomised metal which is hot worked or densified while it is being deposited.
Claim 2
Independent Claim
53 words
A method of producing a tool or die from a pattern, comprising making an electroform from the pattern and filling the electroform to make the tool or die, characterised in that the electroform is filled by spraying, onto it, molten atomised metal which is hot worked or densified while it is being deposited.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein the electroform is filled from the side that faced the pattern.
Claim 4
Dependent Claim
18 words
A method according to claim 1, wherein the electroform is filled from the surface distant from the pattern.
Claim 5
Dependent Claim
16 words
A method according to claim 3, wherein the electroform is filled while still on the pattern.
Claim 6
Dependent Claim
23 words
A method according to claim 1, wherein the electroform is placed on a copy of the pattern to support it during the peening.
Claim 7
Dependent Claim
16 words
A method according to claim 5, wherein the copy of the pattern is of a refractory.
Claim 8
Dependent Claim
16 words
A method according to claim 1, wherein the electroform is of one of nickel and chromium.
Claim 9
Dependent Claim
15 words
A method according to claim 1, wherein the electroform is 0.1 to 1.0 mm thick.
Claim 10
Dependent Claim
18 words
A method according to claim 1, wherein the pattern is of one of wood, plaster and a polymer.
Claim 11
Dependent Claim
17 words
A method according to claim 1, wherein the pattern is of one of a metal and refractory.
Claim 12
Dependent Claim
23 words
A method according to claim 1, wherein the hot working or densifying of the metal sprayed onto the electroform is achieved by peening.
Claim 13
Dependent Claim
11 words
A tool or die made by the method of claim 1.
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) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |