Patent US3085458A successfully refreshed from Google Patents.
US3085458A
Expired / Lapsed
US
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Apparatus for making tapered metal blanks for key brick cases
Assignee: Harbison Walker Refractories Co
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Filing: 1960-09-28
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Granted: 1963-04-16
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Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Richard O Platt
- 👤 Thomas W Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:21
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/02; B21D51/10; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10T; Y10T83/00; Y10T83/444; Y10T83/4539; Y10T83/4577; Y10T83/869; Y10T83/8727; Y10T83/8729; Y10T83/8759; Y10T83/8761; Y10T83/929; Y10T83/9411; Y10T83/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
APPARATUS FOR MAKING LONGITUDINALLY TAPERED METAL BLANKS ADAPTED TO BE BENT TO FORM CHANNEL-LIKE CASES FOR KEY BRICKS, SAID APPARATUS COMPRISING MEANS FOR FEEDING A FLAT METAL STRIP AHEAD INTERMITTENTLY, A FRONT AND A REAR PAIR OF PUNCHES SPACED LONGITUDINALLY OF THE DIRECTION OF STRIP FEED FOR NOTCHING THE OPPOSITE EDGES OF THE STRIP, A SHEAR IN FRONT OF THE PUNCHES FOR CUTTING THE NOTCHED STRIP TRANSVERSELY AT OBLIQUE ANGLES TO ITS LENGTH, EACH PUNCH BEING SHAPED TO FORM A NOTCH HAVING A LONG SIDE INCLINED TO THE ADJOINING EDGE OF THE STRIP AND A SHORT INCLINED SIDE CONNECTING THE INNER END OF THE LONG SIDE WITH SAID EDGE AND BEING SUBSTANTIALLY PERPENDICUALR TO SAID LONG SIDE, THE REAR PAIR OF PUNCHES BEING POSITIONED TO FORM A PAIR OF NOTCHES, ONE IN EACH SIDE EDGE OF THE STRIP, HAVING THEIR LONG SIDES PARALLEL AND THE INNER ENDS OF THOSE SIDES OVERLAPPING AND THEIR SHORT SIDES ALIGNED SO THAT THE TWO NOTCHES WILL BE OFFSET LENGTHWISE OF THE STRIP, MEANS TO ACTUATE THE REAR PAIR OF PUNCHES TO FORM SAID NOTCHES DURING A DWELL IN THE INTERMITTENT STRIP FEED,
Claim 2
Dependent Claim
188 words
APPARATUS FOR MAKING LONGITUDINALLY TAPERED METAL BLANKS ADAPTED TO BE BENT TO FORM CHANNEL-LIKE CASES FOR KEY BRICKS, SAID APPARATUS COMPRISING MEANS FOR FEEDING A FLAT METAL STRIP AHEAD INTERMITTENTLY, A FRONT AND A REAR PAIR OF PUNCHES SPACED LONGITUDINALLY OF THE DIRECTION OF STRIP FEED FOR NOTCHING THE OPPOSITE EDGES OF THE STRIP, A SHEAR IN FRONT OF THE PUNCHES FOR CUTTING THE NOTCHED STRIP TRANSVERSELY AT OBLIQUE ANGLES TO ITS LENGTH, EACH PUNCH BEING SHAPED TO FORM A NOTCH HAVING A LONG SIDE INCLINED TO THE ADJOINING EDGE OF THE STRIP AND A SHORT INCLINED SIDE CONNECTING THE INNER END OF THE LONG SIDE WITH SAID EDGE AND BEING SUBSTANTIALLY PERPENDICUALR TO SAID LONG SIDE, THE REAR PAIR OF PUNCHES BEING POSITIONED TO FORM A PAIR OF NOTCHES, ONE IN EACH SIDE EDGE OF THE STRIP, HAVING THEIR LONG SIDES PARALLEL AND THE INNER ENDS OF THOSE SIDES OVERLAPPING AND THEIR SHORT SIDES ALIGNED SO THAT THE TWO NOTCHES WILL BE OFFSET LENGTHWISE OF THE STRIP, MEANS TO ACTUATE THE REAR PAIR OF PUNCHES TO FORM SAID NOTCHES DURING A DWELL IN THE INTERMITTENT STRIP FEED,
References Cited (Backward Citations)
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |