US3673902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die set; fixture and method of making dies
Assignee: Individual
•
Filing: 1970-02-09
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Granted: 1972-07-04
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Expires: 1990-02-09
Abstract
Abstract A die assembly having lower and upper die shoes mounted on guide pins for reciprocal movement toward and away from each other with the lower and upper die shoes having first and second series of apertures in precise alignment with each other. The assembly further includes a die plate having locating apertures in alignment with both the first and second apertures mounted on the lower shoe; a punch plate having locating apertures in alignment with both the first and second apertures mounted on the upper die shoe; and a stripper plate, having locating apertures in alignment with both the first and second apertures mounted on cross bars which in turn are mounted on the die assembly. The die and punch are precisely mounted in working alignment on the die plate and punch plate for co-operation with a stripper by the method of placing locating pins in either the first or second apertures and successively placing the die plate, punch plate and stripper on said locator pins for precise machining of the die contour, the punch mounting openings and the punch receiving openings in the stripper.
Inventors
- 👤 Walter Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:54
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/34; B21D37/00; B21D37/10; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2144; Y10T83/2163; Y10T83/2166; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/883; Y10T83/8855; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9457; Y10T83/9473; Y10T83/9483
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
254 words
A die assembly in which a die and a working tool are mounted for working engagement with sheet material to be stamped comprising; A. lower and upper die shoes, B. guide means mounted on and inter-connecting said upper and lower shoes in precise alignment for reciprocal movement toward and away from each other, C. a first series of predetermined apertures in said lower shoe spaced from said guide means, D. a second series of predetermined apertures in said upper shoe spaced from said guide means in precise alignment with said first series of apertures, E. a die plate having a plurality of first locating apertures, F. means detachably mounting said die plate on said lower die shoe, G. a working tool support plate having a plurality of second locating apertures, H. means detachably mounting said working tool support plate on said upper die shoe, I. stripping means having a plurality of third locating apertures, J. means detachably mounting said stripping means on said lower and upper die shoes, K. said first, second and third pluralities of locating apertures and said first and second series of predetermined apertures all being located in precise vertical alignment, L. first locator pins mounted in each of said first series of predetermined apertures and first locating apertures for aligning said die plate on said lower die shoe, and M. second locator pins mounted in each of said second series of predetermined apertures and said second locating apertures for aligning said working tool supporT plate on said upper die shoe.
Claim 2
Dependent Claim
254 words
A die assembly in which a die and a working tool are mounted for working engagement with sheet material to be stamped comprising; A. lower and upper die shoes, B. guide means mounted on and inter-connecting said upper and lower shoes in precise alignment for reciprocal movement toward and away from each other, C. a first series of predetermined apertures in said lower shoe spaced from said guide means, D. a second series of predetermined apertures in said upper shoe spaced from said guide means in precise alignment with said first series of apertures, E. a die plate having a plurality of first locating apertures, F. means detachably mounting said die plate on said lower die shoe, G. a working tool support plate having a plurality of second locating apertures, H. means detachably mounting said working tool support plate on said upper die shoe, I. stripping means having a plurality of third locating apertures, J. means detachably mounting said stripping means on said lower and upper die shoes, K. said first, second and third pluralities of locating apertures and said first and second series of predetermined apertures all being located in precise vertical alignment, L. first locator pins mounted in each of said first series of predetermined apertures and first locating apertures for aligning said die plate on said lower die shoe, and M. second locator pins mounted in each of said second series of predetermined apertures and said second locating apertures for aligning said working tool supporT plate on said upper die shoe.
Claim 3
Dependent Claim
49 words
A die assembly according to claim 1 wherein riser bars are detachably mounted on said lower die shoe having fourth locating apertures, with locator pins passing through said first series of apertures and said fourth locating apertures in said risers and said first locating apertures in said die plate.
Claim 4
Dependent Claim
40 words
A die assembly according to Claim 1 wherein said stripper comprises a plate having locator apertures therein, said plate being mounted on a pair of spaced cross bars which in turn are mounted on either said upper or lower shoe.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |