Patent US3083603A successfully refreshed from Google Patents.
US3083603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Figure eight shear
Assignee: Birdsboro Corp
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Filing: 1958-02-26
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Granted: 1963-04-02
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Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Edward C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:10
CPC Classifications
B; B23; B23D; B23D21/00; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487; Y10T83/7547; Y10T83/758; Y10T83/869; Y10T83/8691; Y10T83/8694; Y10T83/8696; Y10T83/87; Y10T83/8874; Y10T83/929; Y10T83/9411; Y10T83/9447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A FIGURE EIGHT SHEAR INCLUDING A SHEAR BLADE, A DIE COOPERATING WITH THE SHEAR BLADE AND A SHEAR DRIVE, IN COMBINATION WITH A VERTICALLY AND HORIZONTALLY MOVING CROSSHEAD HOLDING THE SHEAR BLADE, LATERAL GUIDE MEANS EFFECTIVE BOTH VERTICALLY AND HORIZONTALLY FOR GUIDING THE CROSSHEAD IN MOTION WHICH IS INCLINED BOTH TO THE HORIZONTAL AND TO THE VERTICAL, A FIRST CRANK HORIZONTALLY DISPLACED FROM THE SHEAR BLADE AND OPERATIVELY CONNECTED TO THE SHEAR DRIVE, A FIRST CONNECTING ROD OPERATIVELY CONNECTED BETWEEN THE FIRST CRANK AND THE CROSSHEAD AND CONTROLLING THE HORIZONTAL COMPONENT OF THE INCLINED MOTION OF THE CROSSHEAD, A SECOND CRANK POSITIONED OUT OF THE LINE OF MOTION OF THE FIRST CONNECTING ROD AND OPERATIVELY CONNECTED WITH THE SHEAR DRIVE, A PITMAN PIVOTALLY MOUNTED ABOVE THE CROSSHEAD, A SECOND CONNECTING ROD OPERATIVELY CONNECTED FROM THE PITMAN TO THE SECOND CRANK, MEANS OPERATIVELY CONNECTED FROM THE PITMAN TO THE CROSSHEAD TO CONTROL THE VERTICAL COMPONENT OF THE INCLINED MOTION OF THE CROSSHEAD, AND MEANS FOR ROTATING THE CRANKS AT DIFFERENT SPEEDS.
Claim 2
Dependent Claim
170 words
A FIGURE EIGHT SHEAR INCLUDING A SHEAR BLADE, A DIE COOPERATING WITH THE SHEAR BLADE AND A SHEAR DRIVE, IN COMBINATION WITH A VERTICALLY AND HORIZONTALLY MOVING CROSSHEAD HOLDING THE SHEAR BLADE, LATERAL GUIDE MEANS EFFECTIVE BOTH VERTICALLY AND HORIZONTALLY FOR GUIDING THE CROSSHEAD IN MOTION WHICH IS INCLINED BOTH TO THE HORIZONTAL AND TO THE VERTICAL, A FIRST CRANK HORIZONTALLY DISPLACED FROM THE SHEAR BLADE AND OPERATIVELY CONNECTED TO THE SHEAR DRIVE, A FIRST CONNECTING ROD OPERATIVELY CONNECTED BETWEEN THE FIRST CRANK AND THE CROSSHEAD AND CONTROLLING THE HORIZONTAL COMPONENT OF THE INCLINED MOTION OF THE CROSSHEAD, A SECOND CRANK POSITIONED OUT OF THE LINE OF MOTION OF THE FIRST CONNECTING ROD AND OPERATIVELY CONNECTED WITH THE SHEAR DRIVE, A PITMAN PIVOTALLY MOUNTED ABOVE THE CROSSHEAD, A SECOND CONNECTING ROD OPERATIVELY CONNECTED FROM THE PITMAN TO THE SECOND CRANK, MEANS OPERATIVELY CONNECTED FROM THE PITMAN TO THE CROSSHEAD TO CONTROL THE VERTICAL COMPONENT OF THE INCLINED MOTION OF THE CROSSHEAD, AND MEANS FOR ROTATING THE CRANKS AT DIFFERENT SPEEDS.
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |