US3200424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming hollow rivets
Assignee: National Machinery Co
•
Filing: 1962-06-25
•
Granted: 1965-08-17
•
Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Mcclellan
- 👤 Robert E Wisebaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:08
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/58; B21K1/60; B21J; B21J5/00; B21J5/06; B21J5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A DOUBLE BLOW HEADER COMPRISING A FRAME, A DIE BREAST ON SAID FRAME, A DIE SLIDABLY MOUNTED IN SAID BREAST FOR MOVEMENT BETWEEN A FORWARD AND A REARWARD POSITION, SPRING MEANS URGING SAID DIE TOWARD SAID FORWARD POSITION, A SLIDE RECIPROCABLE IN SAID FRAME, A PAIR OF TOOLS ON SAID SLIDE EACH OPERABLE TO ENGAGE AND WORK A BLANK IN SAID DIE ON ALTERNATE FORWARD STROKES OF SAID SLIDE, ONE TOOL OPERATING TO MOVE SAID DIE TO SAID REARWARD POSITION DURING ITS WORKING STROKE, AND CLAMP MEANS OPERABLE WHEN SAID ONE TOOL IS IN ITS FORWARD POSITION TO LOCK SAID DIE IN SAID REARWARD POSITION AGAINST MOVEMENT RELATIVE TO SAID BREAST AND CONTINUE TO LOCK SAID DIE IN SAID REARWARD POSITION DURING THE FORWARD STROKE OF THE OTHER OF SAID TOOLS.
Claim 2
Dependent Claim
131 words
A DOUBLE BLOW HEADER COMPRISING A FRAME, A DIE BREAST ON SAID FRAME, A DIE SLIDABLY MOUNTED IN SAID BREAST FOR MOVEMENT BETWEEN A FORWARD AND A REARWARD POSITION, SPRING MEANS URGING SAID DIE TOWARD SAID FORWARD POSITION, A SLIDE RECIPROCABLE IN SAID FRAME, A PAIR OF TOOLS ON SAID SLIDE EACH OPERABLE TO ENGAGE AND WORK A BLANK IN SAID DIE ON ALTERNATE FORWARD STROKES OF SAID SLIDE, ONE TOOL OPERATING TO MOVE SAID DIE TO SAID REARWARD POSITION DURING ITS WORKING STROKE, AND CLAMP MEANS OPERABLE WHEN SAID ONE TOOL IS IN ITS FORWARD POSITION TO LOCK SAID DIE IN SAID REARWARD POSITION AGAINST MOVEMENT RELATIVE TO SAID BREAST AND CONTINUE TO LOCK SAID DIE IN SAID REARWARD POSITION DURING THE FORWARD STROKE OF THE OTHER OF SAID TOOLS.
References Cited (Backward Citations)
US1261084A
Cited
US1920497A
Cited
US1830722A
Cited
US2016239A
Cited
US2042375A
Cited
US2114420A
Cited
US2261066A
Cited
US2436342A
Cited
US2396995A
Cited
US2586336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |