Patent US3785281A successfully refreshed from Google Patents.
US3785281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse compressor
Assignee: Individual
•
Filing: 1972-03-10
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Granted: 1974-01-15
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Expires: 1992-03-10
Abstract
Abstract A refuse compressor has a housing provided with inlet means through which quantities of refuse to be compressed may be admitted into the interior chamber of the housing. A platen is received in this chamber for sliding forward movement towards one end wall of the chamber to thereby compress the refuse, and for return movement away from the end wall of the chamber. An operating arrangement is associated with the platen and serves to cause the latter to move forward at a first speed and under a first pressure, and to cause the platen to return to its starting position at a higher second speed but under a lower second pressure. Drain openings are provided in the region of a door of the housing, through which liquid expressed from the refuse may leave the housing.
Inventors
- 👤 D Ligh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:15
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/04; B30B9/06; B30B15/00; B30B15/06; B30B15/068; B30B15/16; B30B15/18; B30B15/20; B30B9/30; B30B9/3057
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
261 words
A refuse compressor comprising, in combination, a housing provided with an elongated internally unobstructed chamber having one end closed by an end wall and an opposite open end longitudinally spaced from said one end; inlet means communicating with said chamber for admitting into the latter quantities of refuse to be compressed; closure means movable from and to a closure position closing said open end, so as to permit removal of compressed refuse from said chamber; platen means mounted in said chamber for sliding forward movement therein from a retracted position closer to said one end to an advanced position closer to said other end for compressing the admitted refuse between said closure means and said platen means during said forward movement, and for sliding return movement from said advanced position to said retracted position; operating means including a constant-flow hydraulic pump for effecting forward movement of said platen means to said advanced position at a first speed and under a first pressure, and for effecting return movement of said platen means to said retracted position at a higher second speed and under a lower second pressure; and drain means communicating with said chamber in the region of said closure means for permitting draining of expressed liquids prior to movement of said closure means from said closure position, said drain means including a compression-resisting cover plate on an inwardly directed side of said closure means and having corrugations and drain apertures for receiving liquid, including any liquid flowing in said corrugations, and for conducting such liquid to the exterior of said chamber.
Claim 2
Dependent Claim
261 words
A refuse compressor comprising, in combination, a housing provided with an elongated internally unobstructed chamber having one end closed by an end wall and an opposite open end longitudinally spaced from said one end; inlet means communicating with said chamber for admitting into the latter quantities of refuse to be compressed; closure means movable from and to a closure position closing said open end, so as to permit removal of compressed refuse from said chamber; platen means mounted in said chamber for sliding forward movement therein from a retracted position closer to said one end to an advanced position closer to said other end for compressing the admitted refuse between said closure means and said platen means during said forward movement, and for sliding return movement from said advanced position to said retracted position; operating means including a constant-flow hydraulic pump for effecting forward movement of said platen means to said advanced position at a first speed and under a first pressure, and for effecting return movement of said platen means to said retracted position at a higher second speed and under a lower second pressure; and drain means communicating with said chamber in the region of said closure means for permitting draining of expressed liquids prior to movement of said closure means from said closure position, said drain means including a compression-resisting cover plate on an inwardly directed side of said closure means and having corrugations and drain apertures for receiving liquid, including any liquid flowing in said corrugations, and for conducting such liquid to the exterior of said chamber.
Claim 3
Dependent Claim
121 words
A refuse compressor as defined in claim 1, said operating means comprising a cylinder, a piston received for reciprocation in said cylinder and dividing the same into two axially spaced compartments, said piston having oppositely directed endfaces one of which is located in one of said compartments and has a first cross-sectional area and the other of which is located in the other compartment and has a second substantially larger cross-sectional area, a piston rod projecting axially from said one endface and out of said cylinder into connected engagement with said platen means, and first and second pressure-fluid conduit means each adapted to be connected with a source of pressure fluid and respectively communicating with said one and said other compartment.
Claim 4
Dependent Claim
27 words
A refuse compressor as defined in claim 2; and further comprising a source of pressure fluid communicating with said conduit means for supplying fluid under pressure thereto.
Claim 5
Dependent Claim
23 words
A refuse compressor as defined in claim 1, wherein said second cross-sectional area is equal to at least double said first cross-sectIonal area.
Claim 6
Dependent Claim
23 words
A refuse compressor as defined in claim 1; and further comprising screen means covering said drain apertures for preventing passage of solids therethrough.
Claim 7
Dependent Claim
38 words
A refuse compressor as defined in claim 1; and further comprising perforations in said cover plate so that expressed liquid may pass through such perforations and flow in the space between said cover plate and said closure means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |