US3146819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press having automatic bend detector
Assignee: Individual
•
Filing: 1961-10-27
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Granted: 1964-09-01
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Fritz Van Endert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
IN A PRESS FOR SHAPING METAL SHEETS BY COLD BENDING THE IMPROVEMENT COMPRISING IN COMBINATION (A) A RAM WITH PUNCHING HEAD RECIPROCABLE ALONG ITS LONGITUDINAL VERTICAL AXIS, (B) A PAIR OF STATIONARY ELONGATED BENDING MEMBERS AND AN OPERATING EDGE PORTION IN EACH OF SAID MEMBERS, SAID EDGE PORTIONS LOCATED IN OPPOSING RELATION IN A COMMON HORIZONTAL PLANE RECEIVING THE METAL SHEET TO BE BENT AND SYMMETRICALLY TO SAID LONGITUDINAL AXIS OF THE RAM; (C) A GAUGE MEMBER SUBSTANTIALLY COAXIAL WITH THE RAM AND EXTENDING WITH ITS UPPER END INTERMEDIATE OF SAID EDGE PORTIONS AT LEAST UP TO SAID HORIZONTAL PLANE, SAID GAUGE MEMBER MOUNTED FOR RECIPROCABLE DISPLACEMENT IN VERTICAL DIRECTION; (D) BIASING MEANS TENDING TO HOLD THE UPPER END OF THE GAUGE MEMBER AT LEAST AT LEVEL WITH SAID HORIZONTAL PLANE AND THUS IN PERMANENT CONTACT WITH THE UNDERSIDE OF THE METAL SHEET; AND (E) CONTROL MEANS OPERATIVELY ASSOCIATED WITH THE GAUGE MEMBER AND ADAPTED TO STOP THE OPERATIONAL DOWNWARD MOVEMENT OF THE RAM WHEN THE GAUGE MEMBER HAS BEEN DOWNWARDLY DISPLACED BY THE BENT IN THE METAL SHEET BY A VARIABLY PREDETERMINED DISTANCE.
Claim 2
Dependent Claim
184 words
IN A PRESS FOR SHAPING METAL SHEETS BY COLD BENDING THE IMPROVEMENT COMPRISING IN COMBINATION (A) A RAM WITH PUNCHING HEAD RECIPROCABLE ALONG ITS LONGITUDINAL VERTICAL AXIS, (B) A PAIR OF STATIONARY ELONGATED BENDING MEMBERS AND AN OPERATING EDGE PORTION IN EACH OF SAID MEMBERS, SAID EDGE PORTIONS LOCATED IN OPPOSING RELATION IN A COMMON HORIZONTAL PLANE RECEIVING THE METAL SHEET TO BE BENT AND SYMMETRICALLY TO SAID LONGITUDINAL AXIS OF THE RAM; (C) A GAUGE MEMBER SUBSTANTIALLY COAXIAL WITH THE RAM AND EXTENDING WITH ITS UPPER END INTERMEDIATE OF SAID EDGE PORTIONS AT LEAST UP TO SAID HORIZONTAL PLANE, SAID GAUGE MEMBER MOUNTED FOR RECIPROCABLE DISPLACEMENT IN VERTICAL DIRECTION; (D) BIASING MEANS TENDING TO HOLD THE UPPER END OF THE GAUGE MEMBER AT LEAST AT LEVEL WITH SAID HORIZONTAL PLANE AND THUS IN PERMANENT CONTACT WITH THE UNDERSIDE OF THE METAL SHEET; AND (E) CONTROL MEANS OPERATIVELY ASSOCIATED WITH THE GAUGE MEMBER AND ADAPTED TO STOP THE OPERATIONAL DOWNWARD MOVEMENT OF THE RAM WHEN THE GAUGE MEMBER HAS BEEN DOWNWARDLY DISPLACED BY THE BENT IN THE METAL SHEET BY A VARIABLY PREDETERMINED DISTANCE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |