US3593410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for casting and finishing tools or dies
Assignee: Individual
•
Filing: 1967-11-21
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Granted: 1971-07-20
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Expires: 1987-11-21
Abstract
Abstract Male and female members are matched and fitted together in order to remove any protuberances. The die members are mounted in a vibrating machine where the matching surface of one die member is chemically treated with an active solution such as copper sulfate to chemically alter the matching surface to a predetermined depth. Abrasive grains or grits are also interposed in the solution between the matching surfaces of the die members. The relative movement between the die members caused by the vibration of the machine results in the abrasive grains scratching the chemically altered surface at the points or areas of contact. Thus by mechanically abrading and chemically altering such areas an extremely high-quality level of tool and die spotting or matching is obtained.
Inventors
- 👤 Robert A Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:34
CPC Classifications
B; B24; B24B; B24B35/00; B24B35/005; C; C23; C23F; C23F4/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
The method of matching male and female die members which have predeterminedly but imperfectly matched corresponding forming surfaces due to protuberances on the latter, and are used in nested relationship of said members in the die forming of threedimensionally contoured objects, comprising the steps of placing a conforming cover made from a relatively yieldable material on a forming surface of the male die member, immersing a corresponding forming surface of the female die member in a chemical solution which will chemically alter and soften said corresponding surface, and working the latter, in a nested relationship of said members, in a moving, protuberance removing action between said female die corresponding surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface.
Claim 2
Independent Claim
137 words
The method of matching male and female die members which have predeterminedly but imperfectly matched corresponding forming surfaces due to protuberances on the latter, and are used in nested relationship of said members in the die forming of threedimensionally contoured objects, comprising the steps of placing a conforming cover made from a relatively yieldable material on a forming surface of the male die member, immersing a corresponding forming surface of the female die member in a chemical solution which will chemically alter and soften said corresponding surface, and working the latter, in a nested relationship of said members, in a moving, protuberance removing action between said female die corresponding surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface.
Claim 3
Independent Claim
101 words
The method of matching male and female die members comprising the step of placing a conforming cover made from a relatively yieldable material on a forming surface of the male die member, immersing a matching surface of the female die member in a chemical solution which will chemically alter and soften said matching surface, and working the latter in a moving, protuberance removing action between said matching surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface the chemical solution being copper sulfate.
Claim 4
Independent Claim
101 words
The method of matching male and female die members comprising the step of placing a conforming cover made from a relatively yieldable material on a forming surface of the male die member, immersing a matching surface of the female die member in a chemical solution which will chemically alter and soften said matching surface, and working the latter in a moving, protuberance removing action between said matching surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface the chemical solution being copper sulfate.
Claim 5
Independent Claim
125 words
The method of matching male and female die members comprising the step of placing a conforming cover made from relatively yiedlable material on a forming surface of the male die member, immersing a matching surface of the female die member in a chemical solution which will chemically alter and soften said matching surface, and working the latter in a moving, protuberance removing action between said matching surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface, abrasive material being interposed between said matching surface of surface of the female die member and the covered male die member for mechanically abrading protuberances on the said female die member.
Claim 6
Independent Claim
125 words
The method of matching male and female die members comprising the step of placing a conforming cover made from relatively yiedlable material on a forming surface of the male die member, immersing a matching surface of the female die member in a chemical solution which will chemically alter and soften said matching surface, and working the latter in a moving, protuberance removing action between said matching surface and a surface of said conforming cover, this action being limited in depth, in relation to said softened surface, only to remove any protuberances from said surface, abrasive material being interposed between said matching surface of surface of the female die member and the covered male die member for mechanically abrading protuberances on the said female die member.
Claim 7
Dependent Claim
39 words
The method of matching male and female die members defined in claim 3 wherein relative sliding motion is provided between said members to assist the abrasive material in the selective removal of the protuberances on the female die member.
Claim 8
Dependent Claim
29 words
The method of matching male and female die members defined in claim 4 wherein the female die member is reciprocated longitudinally thereof with respect to said male die member.
Claim 9
Independent Claim
126 words
A method of matching male and female die members having corresponding substantially but imperfectly matching surfaces to be used in nested and mated relation to one another in the forming of three-dimensiOnally curvilinearly contoured objects, comprising covering a matching surface of one of said die members with a chemical solution which will chemically alter and soften said surface, interposing an abrasive material between said matching surface and a corresponding matching surface of the other die member, and providing relative movement between the male and female die members to assist said abrasive material in the selective reduction of said softened surface by a depth only sufficient to embrace and reduce any protuberances on said surface of said one die member representing an imperfect matching of the surfaces.
Claim 10
Independent Claim
126 words
A method of matching male and female die members having corresponding substantially but imperfectly matching surfaces to be used in nested and mated relation to one another in the forming of three-dimensiOnally curvilinearly contoured objects, comprising covering a matching surface of one of said die members with a chemical solution which will chemically alter and soften said surface, interposing an abrasive material between said matching surface and a corresponding matching surface of the other die member, and providing relative movement between the male and female die members to assist said abrasive material in the selective reduction of said softened surface by a depth only sufficient to embrace and reduce any protuberances on said surface of said one die member representing an imperfect matching of the surfaces.
Claim 11
Dependent Claim
46 words
The method as defined in claim 6, in which it is the surface of the female die member that is softened, a conforming cover being applied over the matching surface of the male die member between said matching surface of the latter and said abrasive material.
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |