US3147791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake for bending sheet metal
Assignee: Lyf-Alum Inc
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Filing: 1961-05-31
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Granted: 1964-09-08
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Math W Rauen
- 👤 Earl B Teed
- 👤 John W Birch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:35
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/04; B21D5/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A BRAKE FOR BENDING SHEET METAL, THE COMBINATION COMPRISING A PAIR OF C-FRAMES HAVING SPACED UPPER AND LOWER JAW PORTIONS, A TABLE MEMBER CONNECTED WITH CORRESPONDING LOWER JAW PORTIONS OF SAID C-FRAMES AND SPANNING THE SPACE THEREBETWEEN, A CHANNEL-SHAPED PLATEN MOVABLY CONNECTED WITH UPPER JAW PORTIONS OF THE C-FRAMES AND HAVING A WEB CONFRONTING THE TABLE MEMBER AND SPACED, UPWARDLY EXTENDING FLANGES CONSTITUTING A GUIDEWAY, A SLIDE PLATE RECIPROCABLE LONGITUDINALLY OF THE PLATEN IN SAID GUIDEWAY AND HAVING MEANS COACTING WITH THE C-FRAME JAWS LAST MENTIONED FOR URGING THE PLATEN TOWARD THE TABLE, THE PLATEN BEING NORMALLY BIASED AWAY FROM THE TABLE TO RECEIVE A WORK SHEET BETWEEN THE PLATEN AND TABLE, AND MEANS CONNECTED WITH THE TABLE AND THE SLIDE PLATE AND MANUALLY OPERABLE FOR EFFECTING RECIPROCATION OF THE SLIDE PLATE RESPECTING THE PLATEN FOR EFFECTING ADVANCE OF THE PLATEN TOWARD THE TABLE.
Claim 2
Dependent Claim
145 words
IN A BRAKE FOR BENDING SHEET METAL, THE COMBINATION COMPRISING A PAIR OF C-FRAMES HAVING SPACED UPPER AND LOWER JAW PORTIONS, A TABLE MEMBER CONNECTED WITH CORRESPONDING LOWER JAW PORTIONS OF SAID C-FRAMES AND SPANNING THE SPACE THEREBETWEEN, A CHANNEL-SHAPED PLATEN MOVABLY CONNECTED WITH UPPER JAW PORTIONS OF THE C-FRAMES AND HAVING A WEB CONFRONTING THE TABLE MEMBER AND SPACED, UPWARDLY EXTENDING FLANGES CONSTITUTING A GUIDEWAY, A SLIDE PLATE RECIPROCABLE LONGITUDINALLY OF THE PLATEN IN SAID GUIDEWAY AND HAVING MEANS COACTING WITH THE C-FRAME JAWS LAST MENTIONED FOR URGING THE PLATEN TOWARD THE TABLE, THE PLATEN BEING NORMALLY BIASED AWAY FROM THE TABLE TO RECEIVE A WORK SHEET BETWEEN THE PLATEN AND TABLE, AND MEANS CONNECTED WITH THE TABLE AND THE SLIDE PLATE AND MANUALLY OPERABLE FOR EFFECTING RECIPROCATION OF THE SLIDE PLATE RESPECTING THE PLATEN FOR EFFECTING ADVANCE OF THE PLATEN TOWARD THE TABLE.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |