Patent US3117386A successfully refreshed from Google Patents.
US3117386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth arrangement for earth digging apparatus
Assignee: Individual
•
Filing: 1961-03-07
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Granted: 1964-01-14
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Expires: 1981-03-07
Abstract
No abstract record available.
Inventors
- 👤 Ferwerda Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:03
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17923; Y10T403/00; Y10T403/70; Y10T403/7026; Y10T403/7033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
AN EARTH BREAKING UNIT COMPRISING A BUCKET HAVING A DIGGING EDGE, A PLURALITY OF TOOTH-MOUNTING ADAPTERS SPACED ALONG SAID DIGGING EDGE AND RIGIDLY CONNECTED THERETO, A PLURALITY OF TEETH, ONE TOOTH MOUNTED IN EACH ADAPTER AND EACH TOOTH HAVING A FORWARD CUTTING EDGE WITH A LOWER EARTH ENGAGING CORNER AND AN UPPER CORNER, SAID ADAPTERS AND SAID TEETH BEING LOCATED SUBSTANTIALLY IN A STRAIGHT LINE, SAID TEETH ARRANGED IN PAIRS IN WHICH THE FORWARD CUTTING EDGES OF SAID PAIR OF TEETH INCLINE TOWARDS EACH OTHER SO THAT THE LOWER CORNERS OF THE CUTTING EDGES ARE CLOSER TOGETHER THAN THE UPPER CORNERS, AND EACH TOOTH OF A PAIR HAVING A SHANK WHICH ENGAGES POSITIONING SURFACES ON ITS ASSOCIATED ADAPTER PROVIDING AT LEAST TWO POSITIONS OF SAID TEETH IN THEIR ASSOCIATED ADAPTERS SO THAT EACH TOOTH OF A PAIR IS INTERCHANGEABLE WITH THE OTHER TOOTH OF THE PAIR WHEREBY THE UPPER CORNER OF THE CUTTING EDGE OF THE FIRST TOOTH BECOMES THE LOWER CORNER OF THE SECOND TOOTH.
Claim 2
Dependent Claim
166 words
AN EARTH BREAKING UNIT COMPRISING A BUCKET HAVING A DIGGING EDGE, A PLURALITY OF TOOTH-MOUNTING ADAPTERS SPACED ALONG SAID DIGGING EDGE AND RIGIDLY CONNECTED THERETO, A PLURALITY OF TEETH, ONE TOOTH MOUNTED IN EACH ADAPTER AND EACH TOOTH HAVING A FORWARD CUTTING EDGE WITH A LOWER EARTH ENGAGING CORNER AND AN UPPER CORNER, SAID ADAPTERS AND SAID TEETH BEING LOCATED SUBSTANTIALLY IN A STRAIGHT LINE, SAID TEETH ARRANGED IN PAIRS IN WHICH THE FORWARD CUTTING EDGES OF SAID PAIR OF TEETH INCLINE TOWARDS EACH OTHER SO THAT THE LOWER CORNERS OF THE CUTTING EDGES ARE CLOSER TOGETHER THAN THE UPPER CORNERS, AND EACH TOOTH OF A PAIR HAVING A SHANK WHICH ENGAGES POSITIONING SURFACES ON ITS ASSOCIATED ADAPTER PROVIDING AT LEAST TWO POSITIONS OF SAID TEETH IN THEIR ASSOCIATED ADAPTERS SO THAT EACH TOOTH OF A PAIR IS INTERCHANGEABLE WITH THE OTHER TOOTH OF THE PAIR WHEREBY THE UPPER CORNER OF THE CUTTING EDGE OF THE FIRST TOOTH BECOMES THE LOWER CORNER OF THE SECOND TOOTH.
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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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |