US3591095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination garbage grinder and pump
Assignee: Individual
•
Filing: 1968-11-25
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Granted: 1971-07-06
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Expires: 1988-11-25
Abstract
Abstract A combination garbage grinder and pump including an integral upper shredder plate and lower pump impeller which rotates at the bottom of a liquid and waste receiving pit, the pit having a wider diameter at the top thereof than at the said shredder plate, the integral shredder plate and pump impeller being capable of both grinding waste material for discharge recirculation to a drain or alternately of pumping liquids through a liquid discharge pipe.
Inventors
- 👤 Albert Di Stefano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
198 words
In a combination garbage grinder and pump, the combination of A. a frustoconical, waste-holding pit, 1. said pit being of greatest diameter at the top thereof; B. a combination shredder plate and pump impeller rotatively disposed at the bottom of the said pit, 1. said shredder plate and pump impeller incorporating garbage grinding means and water pumping means; C. motor means associated within the said combination garbage grinder and pump, 1. said motor means rotatively functioning the said shredder plate and pump impeller; D. a waste discharge line receiving ground material from the shredder plate and pump impeller; E. a water recirculation pipe positioned above the said waste discharge line, 1. said water recirculation pipe receiving liquid effluent from the said shredder plate pump impeller; and F. a waste discharge control valve, 1. said valve controlling waste flow through the said waste discharge line, and 2. said waste discharge valve being operable from a closed position to an open position, whereby waste material may flow to the drain when the said waste discharge valve is in the open position and water may be pumped through the said water discharge line when the valve is in its closed position.
Claim 2
Dependent Claim
198 words
In a combination garbage grinder and pump, the combination of A. a frustoconical, waste-holding pit, 1. said pit being of greatest diameter at the top thereof; B. a combination shredder plate and pump impeller rotatively disposed at the bottom of the said pit, 1. said shredder plate and pump impeller incorporating garbage grinding means and water pumping means; C. motor means associated within the said combination garbage grinder and pump, 1. said motor means rotatively functioning the said shredder plate and pump impeller; D. a waste discharge line receiving ground material from the shredder plate and pump impeller; E. a water recirculation pipe positioned above the said waste discharge line, 1. said water recirculation pipe receiving liquid effluent from the said shredder plate pump impeller; and F. a waste discharge control valve, 1. said valve controlling waste flow through the said waste discharge line, and 2. said waste discharge valve being operable from a closed position to an open position, whereby waste material may flow to the drain when the said waste discharge valve is in the open position and water may be pumped through the said water discharge line when the valve is in its closed position.
Claim 3
Dependent Claim
52 words
said waste discharge valve being operable from a closed position to an open position, whereby waste material may flow to the drain when the said waste discharge valve is in the open position and water may be pumped through the said water discharge line when the valve is in its closed position.
Claim 4
Dependent Claim
52 words
said waste discharge valve being operable from a closed position to an open position, whereby waste material may flow to the drain when the said waste discharge valve is in the open position and water may be pumped through the said water discharge line when the valve is in its closed position.
Claim 5
Dependent Claim
33 words
The invention of claim 1 wherein the said shredder plate and pump impeller includes a plurality of waste shredding buffers projecting upwardly from the top of the said shredder plate and pump impeller.
Claim 6
Dependent Claim
53 words
The invention of claim 1 wherein the said shredder plate and pump impeller includes a plurality of waste shredding buffers projecting upwardly from the top of the said shredder plate and pump impeller and wherein a plurality of pump vanes project downwardly from the bottom of the said shredder plate and pump impeller.
Claim 7
Dependent Claim
41 words
The invention of claim 1 and a water discharge passage circumferentially positioned below the said shredder plate and pump impeller, the said discharge passage being of volute shape, and the said water discharge passage communicating with the said water recirculation pipe.
Claim 8
Dependent Claim
19 words
The invention of claim 1 and a plurality of baffles inwardly projecting from the walls of the said pit.
Claim 9
Dependent Claim
36 words
The invention to claim 1 and a plurality of baffles inwardly projecting from the walls of the said pit and the said baffles being vertically disposed and equidistantly arranged about the periphery of the said pit.
Claim 10
Dependent Claim
18 words
The invention of claim 1 and an annular, inwardly projecting baffle overhanging the top of the said pit.
Claim 11
Dependent Claim
33 words
The invention of claim 1 and an annular, inwardly projecting baffle overhanging the top of the said pit, wherein the said baffle is circumferentially downwardly slanted to direct flow into the said pit.
Claim 12
Dependent Claim
44 words
The invention of claim 1 and an annular, inwardly projecting baffle overhanging the top of the said pit, wherein the said baffle is annularly downwardly positioned to direct flow into the said pit and wherein the said annular baffle is fabricated of resilient material.
Claim 13
Dependent Claim
51 words
The invention of claim 1 and a water and air inlet passage, the said water and air inlet passage terminating within the said unit beneath the said shredder plate and pump impeller, whereby water and air may be introduced into the interior of the said combination garbage grinder and pump unit.
Claim 14
Dependent Claim
60 words
The invention of claim 1 and a water and air inlet passage, the said water and air inlet passage terminating within the said unit beneath the said shredder plate and pump impeller, the said water and air inlet opening being releasably covered by a flap of water-impervious material operatively responsive to pressures within the said water and air inlet pipe.
Claim 15
Dependent Claim
74 words
The invention of claim 1 wherein the said shredder plate and pump impeller includes a plurality of radially extending, downwardly projecting vanes, the said vanes being equidistantly positioned about the said shredder plate and pump impeller, and wherein the said vanes terminate inwardly a distance spaced from the center of the said shredder plate and pump impeller to thereby provide an annular recess, defined upon rotation of the said shredder plate and pump impeller.
Claim 16
Dependent Claim
13 words
The invention of claim 1 wherein the said motor means are rotatively reversible.
Claim 17
Dependent Claim
39 words
The invention of claim 1 wherein the said water pumping means include a plurality of pump vanes radially extending from a central hub, the said vanes diminishing in depth as they approach the hub to form a circular recess.
Claim 18
Dependent Claim
29 words
The invention of claim 14 and a water and air inlet passage, the said water and air inlet passage terminating at one end thereof at the said circular recess.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |