Patent US3340581A successfully refreshed from Google Patents.
US3340581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp
Assignee: ENGMAN Manufacturing CO
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Filing: 1965-09-13
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Granted: 1967-09-12
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Milton C Engman
- 👤 Avery Van Zee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:47
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/04; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1433; Y10T24/1435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A CLAMP, COMPRISING, A PAIR OF SECTIONS INTERCONNECTED TO EXTEND COMPLETELY AROUND THE PIECES BEING CLAMPED, ONE OF SAID SECTIONS HAVING A PAIR OF LEGS AND AN OPENING FORMED ON ONE OF SAID LEGS, THE OTHER SECTION HAVING A PAIR OF LEGS AND ONE OF SAID LEGS HAVING A HOOK END PORTION FOR PIVOTAL ENGAGEMENT WITH SAID OPENING, AND MEANS FOR ADJUSTABLY INTERLOCKING SAID ONE SECTION TO THE OTHER LEG OF SAID OTHER SECTION, SAID ONE SECTION BEING FORMED OF SHEET METAL AND HAVING A CENTER PORTION ALONG ITS LENGTH WHICH IS CHANNEL SHAPED IN CROSS-SECTION TO PRESENT A BASE WALL INTERCONNECTING TWO SIDE WALL FLANGES, SAID SIDE WALL FLANGES HAVING INNER PERIPHERAL EDGES FOR ENGAGEMENT WITH THE PIECES BEING CLAMPED TOGETHER, SAID SIDEWALL FLANGES EXTENDING OUTWARDLY LENGTHWISE TO FORM THE LEGS OF SAID ONE SECTION AND AN END WALL
Claim 2
Dependent Claim
140 words
A CLAMP, COMPRISING, A PAIR OF SECTIONS INTERCONNECTED TO EXTEND COMPLETELY AROUND THE PIECES BEING CLAMPED, ONE OF SAID SECTIONS HAVING A PAIR OF LEGS AND AN OPENING FORMED ON ONE OF SAID LEGS, THE OTHER SECTION HAVING A PAIR OF LEGS AND ONE OF SAID LEGS HAVING A HOOK END PORTION FOR PIVOTAL ENGAGEMENT WITH SAID OPENING, AND MEANS FOR ADJUSTABLY INTERLOCKING SAID ONE SECTION TO THE OTHER LEG OF SAID OTHER SECTION, SAID ONE SECTION BEING FORMED OF SHEET METAL AND HAVING A CENTER PORTION ALONG ITS LENGTH WHICH IS CHANNEL SHAPED IN CROSS-SECTION TO PRESENT A BASE WALL INTERCONNECTING TWO SIDE WALL FLANGES, SAID SIDE WALL FLANGES HAVING INNER PERIPHERAL EDGES FOR ENGAGEMENT WITH THE PIECES BEING CLAMPED TOGETHER, SAID SIDEWALL FLANGES EXTENDING OUTWARDLY LENGTHWISE TO FORM THE LEGS OF SAID ONE SECTION AND AN END WALL
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |