Patent US3554065A successfully refreshed from Google Patents.
US3554065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision cutting punching tool for precision punching of parts
Assignee: Feintool AG
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Filing: 1968-05-21
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Granted: 1971-01-12
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Expires: 1988-05-21
Abstract
Abstract A precision cutting punching tool incorporating a die member with a die opening and a cutting punch which can be displaced through a pressure or contact plate into the die opening. A counterpunch which counteracts the cutting punch is arranged in the die opening. The contact plate has an opening for receiving the cutting punch and this last-mentioned opening is provided at the operable side of such contact plate with protruding ring teeth or projections. The generatrices or surface lines of the die opening with the exception of the location of the cutting edge of the die member extend substantially parallel, and the cutting edge of the die member is irregular, e.g. facetlike or paraboliclike configuration and possesses a convex form.
Inventors
- 👤 Otto Kunz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:02
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/16; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/06; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2124; Y10T83/263; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/75; Y10T83/7573; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A precision cutting punch tool means comprising a die member provided with a die opening, a contact plate having an opening for piercingly receiving a cutting punch member, a cutting punch member extending through said opening of said contact plate and into said die opening, a counterpunch located in said die opening counteracting said cutting punch member, said contact plate having an operable side which is provided at the region of said opening thereof with protruding ringlike projection means which encircle said opening, said die member being provided with cutting edge means, the surface lines of said die opening with the exception of said cutting edge means extending substantially parallel, said cutting edge means of said die member possessing an irregular convex configuration.
Claim 2
Dependent Claim
123 words
A precision cutting punch tool means comprising a die member provided with a die opening, a contact plate having an opening for piercingly receiving a cutting punch member, a cutting punch member extending through said opening of said contact plate and into said die opening, a counterpunch located in said die opening counteracting said cutting punch member, said contact plate having an operable side which is provided at the region of said opening thereof with protruding ringlike projection means which encircle said opening, said die member being provided with cutting edge means, the surface lines of said die opening with the exception of said cutting edge means extending substantially parallel, said cutting edge means of said die member possessing an irregular convex configuration.
Claim 3
Dependent Claim
21 words
A precision cutting punching tool means as defined in claim 1, wherein said protruding ringlike projection means comprise protruding teeth means.
Claim 4
Dependent Claim
50 words
A precision cutting punching tool means as defined in claim 1, including means to lubricate the cutting edge means on said die member; wherein said die member is formed of a porous hard metal in order to be able to assist a lubricating film in carrying out its lubricating function.
Claim 5
Dependent Claim
20 words
A precision cutting punching tool means as defined in claim 3, wherein said porous hard metal is a sintered carbide.
Claim 6
Dependent Claim
26 words
A precision cutting punching tool means as defined in claim 1, wherein said cutting edge means is in the form of substantially facetlike broken cutting edges.
Claim 7
Dependent Claim
35 words
A precision cutting punching tool means as defined in claim 1, wherein said cutting edge means is in the form of substantially parabolic-shaped cutting edges, wherein the parabolic lines merge asymptotically with said surface lines.
Claim 8
Dependent Claim
131 words
A precision cutting punching tool means comprising a die member provided with a die opening, a contact plate member having an opening for piercingly receiving a cutting punch member, a cutting punch member extending through said opening of said contact plate member and into said die opening, a counterpunch located in said die opening counteracting said cutting punch member, one of said members having an operable side which is provided at the region of the associated opening thereof with protruding ringlike projection means which encircle said opening in spaced relationship therefrom, said die member being provided with cutting edge means, the surface lines of said die opening with the exception of said cutting edge means extending substantially parallel, said cutting edge means of said die member possessing an irregular convex configuration.
Claim 9
Dependent Claim
131 words
A precision cutting punching tool means comprising a die member provided with a die opening, a contact plate member having an opening for piercingly receiving a cutting punch member, a cutting punch member extending through said opening of said contact plate member and into said die opening, a counterpunch located in said die opening counteracting said cutting punch member, one of said members having an operable side which is provided at the region of the associated opening thereof with protruding ringlike projection means which encircle said opening in spaced relationship therefrom, said die member being provided with cutting edge means, the surface lines of said die opening with the exception of said cutting edge means extending substantially parallel, said cutting edge means of said die member possessing an irregular convex configuration.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |