Patent US4634737A successfully refreshed from Google Patents.
Patent US3176808A successfully refreshed from Google Patents.
US3176808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow bolt
Assignee: Deere and Co
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Filing: 1961-09-25
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Granted: 1965-04-06
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Charles W Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:36
CPC Classifications
A; A01; A01B; A01B15/00; A01B15/02; F; F16; F16B; F16B35/00; F16B35/04; F16B35/041; F16B35/048; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10T; Y10T403/00; Y10T403/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A CONSTRUCTION COMPRISING A FIRST PART HAVING A BOLTRECEIVING OPENING THEREIN, SAID OPENING BEING OF NONCIRCULAR CROSS-SECTION, A SECOND PART HAVING A COUNTERSUNK BOLT-RECEIVING HOLE EXTENDING ENTIRELY THROUGH SAID SECOND PART AND IN REGISTER WITH SAID OPENING, SAID SECOND PART BEING NORMALLY SEPARABLE FROM SAID FIRST PART AND FASTENER MEANS HOLDING SAID FIRST PART TO SAID SECOND PART, SAID FASTENER MEANS INCLUDING A BOLT HAVING A HEAD AND A THREADED SHANK, SAID HEAD HAVING A FIRST PORTION AND A SECOND PORTION, SAID FIRST PORTION BEING ADJACENT TO SAID SHANK AND HAVING A NON-CIRCULAR CROSS-SECTION TAKEN NORMAL TO THE AXIS OF SAID SHANK, SAID FIRST PORTION BEING NON-ROTATABLY SEATED WITHIN SAID OPENING, AND SAID SECOND PORTION BEING ADJACENT TOO SAID FIRST PORTION AND FLARED OUTWARDLY FROM SAID FIRST PORTION, SAID SECOND PORTION BEING SEATED WITHIN AND SUBSTANTIALLY FILLING SAID HOLE, THE PARTS BEING SO ARRANGED AND CONSTRUCTED THAT SAID SECOND PORTION ENGAGES ONLY SAID COUNTERSUNK HOLE AND SAID FIRST PORTION ENGAGES ONLY SAID NON-CIRCULAR OPENING.
Claim 2
Dependent Claim
164 words
A CONSTRUCTION COMPRISING A FIRST PART HAVING A BOLTRECEIVING OPENING THEREIN, SAID OPENING BEING OF NONCIRCULAR CROSS-SECTION, A SECOND PART HAVING A COUNTERSUNK BOLT-RECEIVING HOLE EXTENDING ENTIRELY THROUGH SAID SECOND PART AND IN REGISTER WITH SAID OPENING, SAID SECOND PART BEING NORMALLY SEPARABLE FROM SAID FIRST PART AND FASTENER MEANS HOLDING SAID FIRST PART TO SAID SECOND PART, SAID FASTENER MEANS INCLUDING A BOLT HAVING A HEAD AND A THREADED SHANK, SAID HEAD HAVING A FIRST PORTION AND A SECOND PORTION, SAID FIRST PORTION BEING ADJACENT TO SAID SHANK AND HAVING A NON-CIRCULAR CROSS-SECTION TAKEN NORMAL TO THE AXIS OF SAID SHANK, SAID FIRST PORTION BEING NON-ROTATABLY SEATED WITHIN SAID OPENING, AND SAID SECOND PORTION BEING ADJACENT TOO SAID FIRST PORTION AND FLARED OUTWARDLY FROM SAID FIRST PORTION, SAID SECOND PORTION BEING SEATED WITHIN AND SUBSTANTIALLY FILLING SAID HOLE, THE PARTS BEING SO ARRANGED AND CONSTRUCTED THAT SAID SECOND PORTION ENGAGES ONLY SAID COUNTERSUNK HOLE AND SAID FIRST PORTION ENGAGES ONLY SAID NON-CIRCULAR OPENING.
References Cited (Backward Citations)
US2519326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |