US3885694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-way bucket assembly for loader
Assignee: Caterpillar Mitsubishi Ltd
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Filing: 1973-10-24
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Granted: 1975-05-27
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Expires: 1993-10-24
Abstract
Abstract A three-way bucket assembly for an earth moving machine comprising a bucket and a bucket support characterized in that side dumping as well as forward dumping are accurately conducted with less maintenance of the assembly with the use of four connecting means of the bucket and the bucket support.
Inventors
- 👤 Tomio Uchida
- 👤 Kisaburo Otabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:55
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/345
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
244 words
In a three-way bucket assembly for an earth moving machine comprising a dump bucket and a dump bucket support, the improvements characterized in that the dump bucket is provided with first and second connecting means displaced at each of its rear sides, respectively, the bucket support comprises at least one plate connected with lift arms of the earth moving machine, at least one frame is secured to the plate and laterally extended, a double rod type hydraulic cylinder, the center of which is pivotally mounted on the center of the frame and is laterally extended, is provided with third connecting means disposed at the outer ends of each rod of the cylinder, and fourth connecting means, disposed at both ends of the frame, are provided with pivot pins whereby at standard conditions when the hydraulic cylinder is at rest, each of the first connecting means is engaged with each of the third connecting means and each of the second connecting means with each of the fourth connecting means; the hydraulic cylinder, when actuated in either direction, moves the bucket laterally relative to the bucket support in the direction a given amount to release the locking of the second and fourth connecting means located backwardly of the dump bucket and thereafter begins to turn the bucket about the pivot pin of fourth connecting means located forwardly of the bucket while releasing the locking of the first and third connecting means located backwardly of the bucket.
Claim 2
Dependent Claim
244 words
In a three-way bucket assembly for an earth moving machine comprising a dump bucket and a dump bucket support, the improvements characterized in that the dump bucket is provided with first and second connecting means displaced at each of its rear sides, respectively, the bucket support comprises at least one plate connected with lift arms of the earth moving machine, at least one frame is secured to the plate and laterally extended, a double rod type hydraulic cylinder, the center of which is pivotally mounted on the center of the frame and is laterally extended, is provided with third connecting means disposed at the outer ends of each rod of the cylinder, and fourth connecting means, disposed at both ends of the frame, are provided with pivot pins whereby at standard conditions when the hydraulic cylinder is at rest, each of the first connecting means is engaged with each of the third connecting means and each of the second connecting means with each of the fourth connecting means; the hydraulic cylinder, when actuated in either direction, moves the bucket laterally relative to the bucket support in the direction a given amount to release the locking of the second and fourth connecting means located backwardly of the dump bucket and thereafter begins to turn the bucket about the pivot pin of fourth connecting means located forwardly of the bucket while releasing the locking of the first and third connecting means located backwardly of the bucket.
Claim 3
Dependent Claim
51 words
A three-way dump bucket assembly for an earth moving machine as set forth in claim 1 in which locking between the first and third connecting means and between the second and fourth connecting means, located forwardly of the bucket is tightened by the turning of the bucket about the pivot pin.
Claim 4
Dependent Claim
66 words
A three-way dump bucket assembly for an earth moving machine as set forth in claim 1 in which the fourth connecting means include bearing means secured to the frame; the pivot pin is rotatably supported on the bearing means; and a square slide block slidably engaged with a groove disposed in the second connecting means is secured to at least one end of the pivot pin.
Claim 5
Dependent Claim
112 words
A three-way dump bucket for an earth moving machine as set forth in claim 3 in which the fourth connecting means include a lock bracket secured to the bearing means and having a circular end portion; the second connecting means include means engaging the circular end portion of the lock bracket upon rotation of the bucket whereby the locking of the second and fourth connecting means located forwardly of the bucket is tightened by the discharge turn of the bucket and in allowing the bucket to return to the original position, the returning turn is first made and then the bucket moves laterally to the original position relative to the bucket support.
Claim 6
Dependent Claim
45 words
A three-way dump bucket assembly for an earth moving machine as set forth in claim 3 in which the second connecting means have means cooperating with the square slide block of the fourth connecting means for controlling the amount of lateral movement of the bucket.
Claim 7
Dependent Claim
31 words
A three-way bucket assembly as set forth in claim 3 in which the pivot pins are stored in the bearing means and the lock bracket are not exposed to the outside.
Claim 8
Dependent Claim
50 words
A three-way dump bucket assembly as set forth in claim 3 in which at the time of unlocking between the second and fourth connecting means, means preventing the free rotation of the pivot pins and the square slide block relative of the bearing means is mounted on the bearing means.
Claim 9
Dependent Claim
49 words
A three-way dump bucket assembly for a construction machine as set forth in claim 1 provided with means for detecting the return of the bucket to the standard conditions by lateral movement after the returning turn of the bucket from the dumping position and thereby deactuating the hydraulic cylinder.
References Cited (Backward Citations)
US3400845A
Cited
US3531007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |