Patent US4729304A successfully refreshed from Google Patents.
US4729304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse compactor and transfer chamber
Assignee: Norcal Solid Waste Systems Inc
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Filing: 1986-04-03
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Granted: 1988-03-08
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Expires: 2006-04-03
Abstract
Abstract A stationary chamber is located below an apron on which garbage and other refuse is dumped from collection trucks. An opening in the apron is aligned with an opening in the top of the chamber. The discharge end of the chamber is closed by a gate which slants rearward at an angle of 15° to the vertical against which the refuse is compacted. The gate may be raised when the chamber is to be discharged. Reciprocating within the chamber is a platen having its upper portion slanted forward at about an angle of 42°. The platen is driven by a multi-stage hydraulic ram. Loads of about 15 cu. yds. are dumped into the chamber opening by a bulldozer. The bulldozer operator by a radio control causes the platen to move forward, compacting the first load to about one-half the original volume of the loose material. When the ram pressure reaches a predetermined pressure, the platen is automatically retracted. The operation is repeated until a predetermined weight has been received and compacted. Meanwhile a truck has been hitched to the end of the chamber. The operator then actuates controls at said panel. The gate is raised by hydraulic cylinders and the platen moved forward to push the compacted load out of the chamber through the back end of the truck and onto the bed of the truck.
Inventors
- 👤 Peter Gardella
- 👤 Kevin L. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:02
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3096; B30B9/3003; B30B9/3007; B30B9/3021; B65; B65F; B65F5/00; B65F9/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
165 words
A baling machine comprising an elongated rectangular cross-section, horizontal chamber having an open discharge end and a rearward end, said chamber having a loading aperture in its top, a retractable gate closing off said discharge end, means for retracting said gate, a platen in said chamber, a hydraulic ram fixed to said rearward end of said chamber and to said platen, transport means guiding said platen for reciprocation in said chamber between a retracted position behind said loading aperture to a projected position beyond said discharge end, whereby said platen compacts material deposited in said aperture against said gate when said gate is closed and discharges compacted material out of said chamber through said discharge end when said gate is open, all of said gate being slanted upwardly-rearwardly, said gate comprising the sole discharge end wall of said chamber against which the material compacted by said machine is forced by said platen, said gate when retracted by said means maintaining said compacted material substantially intact.
Claim 2
Dependent Claim
165 words
A baling machine comprising an elongated rectangular cross-section, horizontal chamber having an open discharge end and a rearward end, said chamber having a loading aperture in its top, a retractable gate closing off said discharge end, means for retracting said gate, a platen in said chamber, a hydraulic ram fixed to said rearward end of said chamber and to said platen, transport means guiding said platen for reciprocation in said chamber between a retracted position behind said loading aperture to a projected position beyond said discharge end, whereby said platen compacts material deposited in said aperture against said gate when said gate is closed and discharges compacted material out of said chamber through said discharge end when said gate is open, all of said gate being slanted upwardly-rearwardly, said gate comprising the sole discharge end wall of said chamber against which the material compacted by said machine is forced by said platen, said gate when retracted by said means maintaining said compacted material substantially intact.
Claim 3
Dependent Claim
17 words
A machine according to claim 1 in which said gate is slanted about 15° to the vertical.
Claim 4
Dependent Claim
43 words
A machine according to claim 1 in which said platen in side elevation has a vertical stretch at the bottom extending upward approximately half the height of said platen, then slanted upwardly-forwardly to near the top of said platen and then vertically upward.
Claim 5
Dependent Claim
43 words
A machine according to claim 3 in which said platen has a side guide roller at each corner bearing against the sides of said chamber and an upward-forward curved protector at each top corner and a downward-forward curved protector at each bottom corner.
Claim 6
Dependent Claim
20 words
A machine according to claim 4 in which the slant of said platen from the horizontal is at about 42°.
Claim 7
Dependent Claim
29 words
A machine according to claim 4 in which said transport means comprises a carriage, said platen comprising the forward face of said carriage, said ram extending through said carriage.
Claim 8
Dependent Claim
36 words
A machine according to claim 6 which further comprises first rollers on said carriage supporting said carriage from the bottom of said chamber, second rollers on said carriage interposed between said chamber top and said carriage.
Claim 9
Dependent Claim
35 words
A machine according to claim 6 in which said ram has multiple stages and which further comprises wheels depending from some of said stages and tracks on said chamber bottom to guide said support wheels.
Claim 10
Dependent Claim
34 words
A machine according to claim 1 which further comprises support means supporting said chamber and weight indicating means in said support means indicating the weight of said machine and the contents of said chamber.
Claim 11
Dependent Claim
70 words
A machine according to claim 1 which further comprises hydraulic means for said ram comprising a reservoir for fluid, a pump, a prime mover for said pump, a control module for delivering fluid alternately to opposite ends of said ram, and a sensor sensing the pressure of fluid delivered to said ram and means to reverse said ram when said sensor senses a predetermined maximum pressure delivered to said ram.
Claim 12
Dependent Claim
68 words
A system comprising a machine according to claim 1, an apron having an opening aligned with said aperture whereby material deposited on said apron may be charged into said opening when said platen is retracted behind said aperture, and a vehicle having a bed and an open end aligned with said discharge end, whereby compacted material discharged out of said chamber may be delivered directly onto said bed.
Claim 13
Dependent Claim
38 words
A system according to claim 11 which further comprises a hitch attaching said vehicle to said machine and a sensor on said hitch indicating excessive force applied to said vehicle by ejection of a bale onto said vehicle.
Claim 14
Dependent Claim
24 words
A system according to claim 11 which further comprises a motor-driven scraper on said apron to convey material on said apron to said opening.
Claim 15
Dependent Claim
158 words
A baling machine comprising an elongated rectangular cross-section, horizontal chamber having an open discharge end and a rearward end, said chamber having a loading aperture in its top, a retractable gate closing off said discharge end, means for retracting said gate a platen in said chamber, a hydraulic ram fixed to said rearward end of said chamber, and to said platen, transport means guiding said platen for reciprocation in said chamber between a retracted position behind said loading aperture to a projected position beyond said discharge end, whereby said platen compacts material deposited in said aperture against said gate when said gate is closed and discharges compacted material out of said chamber through said discharge end when said gate is open, said platen in side elevation having a vertical stretch at the bottom extending upward approximately half the height of said platen, then an upwardly-forwardly slanted stretch to near the top of said platen and then vertically upward.
Claim 16
Dependent Claim
158 words
A baling machine comprising an elongated rectangular cross-section, horizontal chamber having an open discharge end and a rearward end, said chamber having a loading aperture in its top, a retractable gate closing off said discharge end, means for retracting said gate a platen in said chamber, a hydraulic ram fixed to said rearward end of said chamber, and to said platen, transport means guiding said platen for reciprocation in said chamber between a retracted position behind said loading aperture to a projected position beyond said discharge end, whereby said platen compacts material deposited in said aperture against said gate when said gate is closed and discharges compacted material out of said chamber through said discharge end when said gate is open, said platen in side elevation having a vertical stretch at the bottom extending upward approximately half the height of said platen, then an upwardly-forwardly slanted stretch to near the top of said platen and then vertically upward.
Claim 17
Dependent Claim
24 words
A machine according to claim 14 in which the slant of said slanted stretch of said platen from the horizontal is at about 42°.
Claim 18
Dependent Claim
29 words
A machine according to claim 14 in which said transport means comprises a carriage, said platen comprising the forward face of said carriage, said ram extending through said carriage.
Claim 19
Dependent Claim
38 words
A machine according to claim 16 in which said ram has multiple stages which further comprises, support wheels depending from some of the said stages and tracks on the bottom of said chamber to guide said support wheels.
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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) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |