US3268974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing expanded metal
Assignee: Exmet Corp
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Filing: 1964-11-16
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Granted: 1966-08-30
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Felsenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:54
CPC Classifications
B; B21; B21D; B21D31/00; B21D31/04; B21D31/043; Y; Y10; Y10T; Y10T29/00; Y10T29/18; Y10T29/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
IN APPARATUS FOR PRODUCING AN EXPANDED METAL SHEET IN WHICH SUCCESSIVE STAGGERED ROWS OF PENDANT SHEAREDOUT STRANDS ARE LINKED TOGETHER BY CONNECTING BRIDGES: (A) A SHEAR PLATE AND A SERRATED PUNCH RECIPROCABLE IN SHEARING RELATION TO EACH OTHER, (B) MEANS FOR CAUSING STEPWISE ADVANCEMENT OF THE SHEET TO BE TREATED, TO BRING SUCCESSIVE AREAS INTO OVERCHANGING RELATION TO THE SHEAR PLATE AND THUS SUBJECT THEM TO THE SHEARING ACTION OF SAID PUNCH, (C) MEANS FOR MOVING THE PUNCH LATERALLY TO EFFECT A RELATIVE BACK-AND-FORTH LATERAL SHIFT OF PUNCH AND SHEET BETWEEN SHEARING OPERATIONS, (D) MEANS FOR SUPPORTING THE OVERHANGING AREA OF THE SHEET DURING EACH SHEARING OPERATION IN THE REGIONS BETWEEN THE SERRATIONS OF THE PUNCH SO AS TO COUNTERACT THE TENDENCY OF THE PUNCH TO PULL THE CONNECTING BRIDGES OUT OF THE PLANE OF THE SHEET, SAID MEANS COMPRISING A COMB DIRECTLY ADJACENT TO AND IN CONTACT WITH THE SHEAR PLATE AND DIRECTLY BENEATH THE OVERHANGING SHEET AREA, SAID COMB HAVING SERRATIONS FACING TOWARD AND IN COMPLEMENTARY ALIGNMENT WITH THOSE OF THE PUNCH, THE PEAK OF EACH COMB SERRATION LYING SUBSTANTIALLY AT THE LEVEL OF THE SHEARING EDGE OF SAID PLATE, AND
Claim 2
Dependent Claim
193 words
IN APPARATUS FOR PRODUCING AN EXPANDED METAL SHEET IN WHICH SUCCESSIVE STAGGERED ROWS OF PENDANT SHEAREDOUT STRANDS ARE LINKED TOGETHER BY CONNECTING BRIDGES: (A) A SHEAR PLATE AND A SERRATED PUNCH RECIPROCABLE IN SHEARING RELATION TO EACH OTHER, (B) MEANS FOR CAUSING STEPWISE ADVANCEMENT OF THE SHEET TO BE TREATED, TO BRING SUCCESSIVE AREAS INTO OVERCHANGING RELATION TO THE SHEAR PLATE AND THUS SUBJECT THEM TO THE SHEARING ACTION OF SAID PUNCH, (C) MEANS FOR MOVING THE PUNCH LATERALLY TO EFFECT A RELATIVE BACK-AND-FORTH LATERAL SHIFT OF PUNCH AND SHEET BETWEEN SHEARING OPERATIONS, (D) MEANS FOR SUPPORTING THE OVERHANGING AREA OF THE SHEET DURING EACH SHEARING OPERATION IN THE REGIONS BETWEEN THE SERRATIONS OF THE PUNCH SO AS TO COUNTERACT THE TENDENCY OF THE PUNCH TO PULL THE CONNECTING BRIDGES OUT OF THE PLANE OF THE SHEET, SAID MEANS COMPRISING A COMB DIRECTLY ADJACENT TO AND IN CONTACT WITH THE SHEAR PLATE AND DIRECTLY BENEATH THE OVERHANGING SHEET AREA, SAID COMB HAVING SERRATIONS FACING TOWARD AND IN COMPLEMENTARY ALIGNMENT WITH THOSE OF THE PUNCH, THE PEAK OF EACH COMB SERRATION LYING SUBSTANTIALLY AT THE LEVEL OF THE SHEARING EDGE OF SAID PLATE, AND
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |