Patent US3718222A successfully refreshed from Google Patents.
US3718222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for detachable implements
Assignee: Individual
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Filing: 1970-12-11
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Granted: 1973-02-27
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Expires: 1990-12-11
Abstract
Abstract A coupling for detachably connecting a farm implement with a movable boom includes a first part with a frame mountable on the free end of the boom for rotation relative thereto and for bodily movement therewith through a predetermined arc. A pair of spaced apart mounting posts extend outwardly of the edge of the frame and are moved with the latter through that arc to fit within a pair of collars mounted on the back of the implement. Once the posts are inserted into the collars, a pressure fluid cylinder mounted on the boom and connected to the frame is actuated to rotate the latter clockwise drawing the back of the implement against the frame. This aligns a portion of a connector mounted on the frame with a cooperating portion of the connector mountable on the implement. Thereafter, a pin inserted through the connector portions holds the connector together to prevent the posts from being withdrawn from the collars.
Inventors
- 👤 P Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:57
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/3604; E02F3/3609; E02F3/3631; E02F3/3672
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
349 words
A coupling for use in attaching a movable boom to the back side of an implement, said coupling comprising a generally rectangular plate member mounted along a horizontal axis extending transversely of the free end of said boom and including an unobstructed front side facing away from the free end of the boom and extending parallel with said axis and a top edge spaced radially from said horizontal axis, said plate being pivotable about said axis and movable bodily with said boom through a predetermined are to abut the back side of said implement with said front side, two mounting posts rigidly connected with the plate at positions spaced from each other a predetermined distance and projecting upwardly beyond said top edge of said plate, a framework including a pair of laterally spaced narrow plate means for abutment with said first mentioned plate fixed on the back side of the scoop and including further a collar mounted at the top of each narrow plate means with the latter being between the collar and the implement, said collars being spaced from each other a distance equal to the distance between said posts and positioned to receive said posts as the plate member is swung through said arc upwardly and into abutment with the narrow plate means on the back side of the implement thereby to couple the implement on the end of the boom, a pair of releasable connectors with first portions fixed adjacent opposite ends of the lower portion of said plate member and offset laterally and outwardly from each side of the boom and second portions fixed on said framework laterally and outwardly of the boom in positions to align with said first portions when the implement is coupled with the boom, and means for fastening the aligned portions of said connectors together to hold the front side of the plate in abutment with the narrow laterally spaced plates of the framework on the back side of the implement whereby said horizontal axis about which said plate pivots, is positioned closely adjacent the back side of the implement.
Claim 2
Dependent Claim
349 words
A coupling for use in attaching a movable boom to the back side of an implement, said coupling comprising a generally rectangular plate member mounted along a horizontal axis extending transversely of the free end of said boom and including an unobstructed front side facing away from the free end of the boom and extending parallel with said axis and a top edge spaced radially from said horizontal axis, said plate being pivotable about said axis and movable bodily with said boom through a predetermined are to abut the back side of said implement with said front side, two mounting posts rigidly connected with the plate at positions spaced from each other a predetermined distance and projecting upwardly beyond said top edge of said plate, a framework including a pair of laterally spaced narrow plate means for abutment with said first mentioned plate fixed on the back side of the scoop and including further a collar mounted at the top of each narrow plate means with the latter being between the collar and the implement, said collars being spaced from each other a distance equal to the distance between said posts and positioned to receive said posts as the plate member is swung through said arc upwardly and into abutment with the narrow plate means on the back side of the implement thereby to couple the implement on the end of the boom, a pair of releasable connectors with first portions fixed adjacent opposite ends of the lower portion of said plate member and offset laterally and outwardly from each side of the boom and second portions fixed on said framework laterally and outwardly of the boom in positions to align with said first portions when the implement is coupled with the boom, and means for fastening the aligned portions of said connectors together to hold the front side of the plate in abutment with the narrow laterally spaced plates of the framework on the back side of the implement whereby said horizontal axis about which said plate pivots, is positioned closely adjacent the back side of the implement.
References Cited (Backward Citations)
US2781928A
Cited
US3512665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |