US3767068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packer blade for a rear loader refuse vehicle
Assignee: Peabody International Corp
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Filing: 1972-02-24
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Granted: 1973-10-23
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Expires: 1992-02-24
Abstract
Abstract A packer blade for a rear loader refuse truck having parallel vertical side walls, an open rear end, and a hopper bottom adjacent the rear end. The hopper bottom has a generally V-shaped longitudinal section, with both segments being arcuately formed in longitudinal section. There are a pair of parallel, straight, downwardly and rearwardly inclined guide tracks, respectively located in the upper part of each side wall. A packer blade having a concave arcuate forward surface is pivoted at its upper end on a cross rod carried by slides which are movable along the guide tracks by power means. A pair of extensible cylinders are pivotally connected at the upper rear corners of the side walls and to a medial portion of the packer blade. The packer blade is cycled by retracting the rear cylinders, moving the slides down the guides, extending the rear cylinders and then moving the slides up the guides, to pass backwardly over refuse in the hopper, to come down behind the refuse and to sweep it forwardly along the arcuately formed hopper bottom segments and into the truck body. A fall back shield is pivotally mounted between the side walls forwardly of the extreme forward position of the packer blade and cooperates with the top portions of the packer blade to wipe refuse forwardly off such top portions.
Inventors
- 👤 W Herpich
- 👤 D Chaney
- 👤 G Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:06
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/14; B65F3/20; B65F3/207
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
179 words
In a refuse collecting vehicle having a floor and upstanding side walls defining a refuse receiving body with an open rear end, the improvement comprising a hopper formed in said floor adjacent said open end, said hopper having a forwardly and upwardly inclined arcuate bottom surface, a packing blade traversing the space between said side walls, power operated linkage means for moving said packing blade through said hopper with the bottom edge of the blade sweeping along the hopper floor surface to move accumulated refuSe out of the hopper, said packing blade having its forward refuse engaging surface arcuately contoured in vertical cross section, the chord of said packing blade surface being substantially vertical when the bottom edge of the packing blade is positioned above the forward end of said hopper, a fall back shield pivotally mounted between said side walls forwardly of the extreme forward position of said packer blade, and resilient means for maintaining the bottom edge of said shield in engagement with the front surface of said packer blade in all positions of said packer blade.
Claim 2
Dependent Claim
179 words
In a refuse collecting vehicle having a floor and upstanding side walls defining a refuse receiving body with an open rear end, the improvement comprising a hopper formed in said floor adjacent said open end, said hopper having a forwardly and upwardly inclined arcuate bottom surface, a packing blade traversing the space between said side walls, power operated linkage means for moving said packing blade through said hopper with the bottom edge of the blade sweeping along the hopper floor surface to move accumulated refuSe out of the hopper, said packing blade having its forward refuse engaging surface arcuately contoured in vertical cross section, the chord of said packing blade surface being substantially vertical when the bottom edge of the packing blade is positioned above the forward end of said hopper, a fall back shield pivotally mounted between said side walls forwardly of the extreme forward position of said packer blade, and resilient means for maintaining the bottom edge of said shield in engagement with the front surface of said packer blade in all positions of said packer blade.
Claim 3
Dependent Claim
38 words
A packer blade for the tailgate of a rear loader refuse vehicle, said tailgate having an open rear end, parallel vertical side walls and a hopper bottom, said hopper having a generally V-shaped longitudinal section with curved arms,
Claim 4
Dependent Claim
38 words
A packer blade for the tailgate of a rear loader refuse vehicle, said tailgate having an open rear end, parallel vertical side walls and a hopper bottom, said hopper having a generally V-shaped longitudinal section with curved arms,
Claim 5
Dependent Claim
64 words
the upper edge of said packer blade being reciprocal along a substantially straight track that extends between a point near the upper, forward corner of said tailgate and a point located rearwardly and at a lower level such that when said upper edge reaches the lower end of said track, said lower edge is at the apex of the V-shaped bottom of said hopper,
Claim 6
Dependent Claim
64 words
the upper edge of said packer blade being reciprocal along a substantially straight track that extends between a point near the upper, forward corner of said tailgate and a point located rearwardly and at a lower level such that when said upper edge reaches the lower end of said track, said lower edge is at the apex of the V-shaped bottom of said hopper,
Claim 7
Dependent Claim
10 words
power means for reciprocating said upper edge along said path,
Claim 8
Dependent Claim
10 words
power means for reciprocating said upper edge along said path,
Claim 9
Dependent Claim
55 words
The combination defined in claim 2 plus a fall back shield pivotally mounted between said side walls forwardly of the extreme forward position of said packer blade, and resilient means for maintaining the bottom edge of said shield in engagement with the front surface of said packer blade in all positions of said packer blade.
Claim 10
Dependent Claim
29 words
separate extensible power cylinder means pivotally connected near the upper rear corner of said tailgate and to said packer blade at a point intermediate its upper and lower edges,
Claim 11
Dependent Claim
29 words
separate extensible power cylinder means pivotally connected near the upper rear corner of said tailgate and to said packer blade at a point intermediate its upper and lower edges,
Claim 12
Dependent Claim
43 words
the front face of said packer blade being generally concave rearwardly in the area between said upper edge and the pivotal connection of said power cylinder means to said packer blade relative to a line connecting said upper edge and said pivotal connection.
Claim 13
Dependent Claim
43 words
the front face of said packer blade being generally concave rearwardly in the area between said upper edge and the pivotal connection of said power cylinder means to said packer blade relative to a line connecting said upper edge and said pivotal connection.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |