US4071155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pincer bucket
Assignee: Individual
•
Filing: 1976-05-17
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Granted: 1978-01-31
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Expires: 1996-05-17
Abstract
Abstract Two pincer bucket halves, each including a horizontal blade, are mounted on a frame for opposed pivotal movement in a normally horizontal plane about respective parallel normally vertical axes. An upstanding back spans the axes and upstanding sides extend perpendicularly from the outer edges of the pincer blades. To pick up material, such as a pile of leaves or branches, from a ground surface, the pincer bucket halves are opened and advanced toward the pile with the opposed blades in contact with the ground surface. After the bucket halves are located on opposite sides of the pile, the bucket halves are brought together so that the blades are closed, thereby undercutting and supporting the material, with the vertical sides of the buckets confining the material in combination with the vertical back. The embraced material may then be elevated and transported within the bucket. The material is discharged by tilting the bucket forwardly and opening the bucket halves. As a modification, the two bucket halves may be pivoted about a single vertical axis.
Inventors
- 👤 Samuel A. Hart
- 👤 William E. Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:10
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4133
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A pincer bucket comprising: a. first and second pincer bucket halves mounted for relative pivotal movement about at least one vertical axis at the rear thereof; b. generally planar upstanding side walls mounted on each of said pincer bucket halves, said side walls extending forwardly to define a generally rectilinear area therebetween when said halves are in open position and being movable to a position where their leading edges are in close juxtaposition when said halves are in closed position; c. a substantially planar horizontal pincer blade of generally triangular configuration extending inwardly from each of said walls to form a partial bottom for said pincer bucket when said halves are in open position, said pincer blades moving into at least closely adjacent position when said halves are moved to closed position and therefore being adapted to undercut a pile of freestanding material on a substantially horizontal surface as said blades are closed with their bottom surfaces closely adjacent said horizontal surface; d. means for opening and closing said pincer bucket halves; and e. means for moving said pincer bucket forward in open position with said pincer blades disposed generally horizontally and closely above said horizontal surface; whereby major portions of said freestanding material are collected above the blades.
Claim 2
Dependent Claim
209 words
A pincer bucket comprising: a. first and second pincer bucket halves mounted for relative pivotal movement about at least one vertical axis at the rear thereof; b. generally planar upstanding side walls mounted on each of said pincer bucket halves, said side walls extending forwardly to define a generally rectilinear area therebetween when said halves are in open position and being movable to a position where their leading edges are in close juxtaposition when said halves are in closed position; c. a substantially planar horizontal pincer blade of generally triangular configuration extending inwardly from each of said walls to form a partial bottom for said pincer bucket when said halves are in open position, said pincer blades moving into at least closely adjacent position when said halves are moved to closed position and therefore being adapted to undercut a pile of freestanding material on a substantially horizontal surface as said blades are closed with their bottom surfaces closely adjacent said horizontal surface; d. means for opening and closing said pincer bucket halves; and e. means for moving said pincer bucket forward in open position with said pincer blades disposed generally horizontally and closely above said horizontal surface; whereby major portions of said freestanding material are collected above the blades.
Claim 3
Dependent Claim
100 words
A pincer bucket as in claim 1 wherein said pincer blades are pivotally mounted on first and second parallel pivot axes, respectively, and wherein each of said blades extends longitudinally between a first end adjacent the respective pivot axis and a second end remote therefrom and wherein said first and second wall means are also mounted longitudinally on said pincer blades so that the adjacent ends of said wall means remote from the pivot axes are capable of exerting a grasping force on material interposed between said adjacent ends of said wall means in said second position of said blades.
Claim 4
Dependent Claim
29 words
A pincer bucket as in claim 1 including means for pivoting said bucket about a transverse axis; and wherein the means for moving includes means for elevating said bucket.
Claim 5
Dependent Claim
33 words
A pincer bucket as in claim 3 including a vertical wall extending between said parallel axes; and wherein said bucket pivoting means and said bucket elevating means are connected to said vertical wall.
Claim 6
Dependent Claim
21 words
A pincer bucket as in claim 4 wherein said vertical wall spans the ends of said wall means adjacent said axes.
References Cited (Backward Citations)
FR987466A
Cited
US2437572A
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US2470779A
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US2636648A
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US2949201A
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US3097875A
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US3410431A
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Cited
US3920137A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |