US3122833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duct perforator for a damper
Assignee: Individual
•
Filing: 1962-06-29
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Granted: 1964-03-03
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Houston David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; Y; Y10; Y10T; Y10T83/00; Y10T83/384; Y10T83/395; Y10T83/398
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A JIG PUNCH FOR PERFORATING A DUCT SECTION FOR A DAMPER SHAFT, THE JIG PUNCH COMPRISING IN COMBINATION: (A) A PAIR OF PERFORATORS, (B) A STRAIGHT BEAM, (C) SAID PAIR OF PERFORATORS BEING SELECTIVELY SPACEABLE ALONG SAID STRAIGHT BEAM, (D) SAID PERFORATORS BEING SUPPORTED ND EXTENDED TRANSVERSELY FROM ONE SIDE OF SAID STRAIGHT BEAM AND HAVING SUFFICIENT RESPECTIVE THROATS THEREIN FOR THE RELATIVE ENTRANCE OF OPPOSITE WALL END PORTION OF A DUCT, (E) LATCH UNITS, (F) AND SAID LATCH UNITS LATCHING SAID PERFORATORS TO SAID STRAIGHT BEAM, (G) GAUGE MEMEBERS, (H) SAID GAUGE MEMBERS BEING MOUNTED ON, AND HAVING BENT PORTION SELECTIVELY SPACEABLE TRANSVERSELY FROM SAID STRAIGHT BEAM, TO ENGAGE THE INNER WALL OF A DUCT TO ALIGN SAID STRAIGHT BEAM PARALLEL WITH THE LATERAL AXIS OF A DUCT, (I) A SECOND SET OF LATCH UNTILS, (J) AND SAID SECOND SET OF LATCH UNITS LATCHING SAID GAUGE MEMBERS TO SAID STRAIGHT BEAM.
Claim 2
Dependent Claim
152 words
A JIG PUNCH FOR PERFORATING A DUCT SECTION FOR A DAMPER SHAFT, THE JIG PUNCH COMPRISING IN COMBINATION: (A) A PAIR OF PERFORATORS, (B) A STRAIGHT BEAM, (C) SAID PAIR OF PERFORATORS BEING SELECTIVELY SPACEABLE ALONG SAID STRAIGHT BEAM, (D) SAID PERFORATORS BEING SUPPORTED ND EXTENDED TRANSVERSELY FROM ONE SIDE OF SAID STRAIGHT BEAM AND HAVING SUFFICIENT RESPECTIVE THROATS THEREIN FOR THE RELATIVE ENTRANCE OF OPPOSITE WALL END PORTION OF A DUCT, (E) LATCH UNITS, (F) AND SAID LATCH UNITS LATCHING SAID PERFORATORS TO SAID STRAIGHT BEAM, (G) GAUGE MEMEBERS, (H) SAID GAUGE MEMBERS BEING MOUNTED ON, AND HAVING BENT PORTION SELECTIVELY SPACEABLE TRANSVERSELY FROM SAID STRAIGHT BEAM, TO ENGAGE THE INNER WALL OF A DUCT TO ALIGN SAID STRAIGHT BEAM PARALLEL WITH THE LATERAL AXIS OF A DUCT, (I) A SECOND SET OF LATCH UNTILS, (J) AND SAID SECOND SET OF LATCH UNITS LATCHING SAID GAUGE MEMBERS TO SAID STRAIGHT BEAM.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |