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Patent US3072200A successfully refreshed from Google Patents.
US3072200A
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Assignee: Allis Chalmers Corp
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Filing: 1960-04-04
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Granted: 1963-01-08
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Dean H Yerkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:48
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/02; A01B69/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A ROW MARKER, THE COMBINATION COMPRISING: A SUPPORT; A MAIN ARM; MEANS PIVOTALLY CONNECTING SAID MAIN ARM TO SAID SUPPORT; AN END ARM; MEANS PIVOTALLY CONNECTING SAID END ARM TO SAID MAIN ARM; SAID END ARM INCLUDING AN ABUTMENT MEMBER HAVING AN ABUTEMENT WALL; A CONNECTING MEMBER; MEANS PIVOTALLY CONNECTING ONE END OF SAID CONNECTING MEMBER TO SAID SUPPORT; MEANS CONNECTING THE OTHER END OF SAID CONNECTING MEMBER TO SAID ABUTMENT MEMBER WHEN SAID ROW MARKER IS EXTENDED; SAID CONNECTING MEMBER BEING POSITIONED TO ENGAGE SAID ABUTMENT WALL DURING UPWARD MOVEMENT OF SAID MAIN ARM TO PREVENT FREE DOWNWARD MOVEMENT OF SAID END ARM; AND, SAID END ARM WHEN RAISED TO A PREDETERMINED POSITION, LOCATING SAID ABUTMENT WALL IN A POSITION WHERE IT DISENGAGES FROM SAID CONNECTING MEMBER TO PERMIT SAID END ARM TO MOVE TO A VERTICAL POSITION.
Claim 2
Dependent Claim
140 words
IN A ROW MARKER, THE COMBINATION COMPRISING: A SUPPORT; A MAIN ARM; MEANS PIVOTALLY CONNECTING SAID MAIN ARM TO SAID SUPPORT; AN END ARM; MEANS PIVOTALLY CONNECTING SAID END ARM TO SAID MAIN ARM; SAID END ARM INCLUDING AN ABUTMENT MEMBER HAVING AN ABUTEMENT WALL; A CONNECTING MEMBER; MEANS PIVOTALLY CONNECTING ONE END OF SAID CONNECTING MEMBER TO SAID SUPPORT; MEANS CONNECTING THE OTHER END OF SAID CONNECTING MEMBER TO SAID ABUTMENT MEMBER WHEN SAID ROW MARKER IS EXTENDED; SAID CONNECTING MEMBER BEING POSITIONED TO ENGAGE SAID ABUTMENT WALL DURING UPWARD MOVEMENT OF SAID MAIN ARM TO PREVENT FREE DOWNWARD MOVEMENT OF SAID END ARM; AND, SAID END ARM WHEN RAISED TO A PREDETERMINED POSITION, LOCATING SAID ABUTMENT WALL IN A POSITION WHERE IT DISENGAGES FROM SAID CONNECTING MEMBER TO PERMIT SAID END ARM TO MOVE TO A VERTICAL POSITION.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |