US3570355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational die stamping tool
Assignee: Roeder and Spengler OHG
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Filing: 1968-05-23
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Granted: 1971-03-16
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Expires: 1988-05-23
Abstract
Abstract The present die stamping tool has a baseplate shaped to conform to the surface of a rotational body, such as a cylinder. Working blades are held in grooves or slots of the baseplate by means of serrated back edges which may be provided with gripping teeth. The rotational die stamping tool is made by shaping or bending the baseplate, cutting said grooves or slots, serrating the back edges of said working blades and anchoring said serrated back edges in the grooves or slots.
Inventors
- 👤 Ernst Maximilian Spengler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:41
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2831; B21; B21D; B21D37/00; B21D37/20; B21D37/205; B26; B26F; B26F1/00; B26F1/38; B26F1/44; B26F1/46; B26D; B26D7/00; B26D7/26; B26D2007/2607; B26F1/384; B26F2001/4463; B29; B29C; B29C65/00; B29C65/48; B29C66/00; B29C66/01; B29C66/05; B29C66/20; B29C66/24; B29C66/244; B29C66/2442; B29C66/303; B29C66/3032; B29C66/30321; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/70; B29C66/71; B29C66/74; B29C66/742; B29C66/7428; B29C66/74283; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9377; Y10T83/9457; Y10T83/9464
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
The rotational die stamping tool according to claim 1, wherein said anchoring hooks protrude out of said plane defined by said blade means.
Claim 2
Dependent Claim
46 words
The rotational die stamping tool according to claim 2, wherein said hooks are bend out of said plane defined by said blade means in alternate fashion whereby said downwardly pointed surfaces and the upwardly facing surfaces appear on each side on every other of said teeth.
Claim 3
Dependent Claim
20 words
The rotational die stamping tool according to claim 1, wherein said base plate is made of a heat treatable material.
Claim 4
Dependent Claim
20 words
The rotational die stamping tool according to claim 1, wherein serrations between adjacent teeth have a heart-shaped bottom opening downwardly.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |