Patent US3941316A successfully refreshed from Google Patents.
US3941316A
Expired / Lapsed
US
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Apparatus for comminuting and extracting
Assignee: Individual
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Filing: 1975-03-18
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Granted: 1976-03-02
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Expires: 1995-03-18
Abstract
Abstract Method and apparatus for comminuting cellulosic materials such as paper and destructible constituents of trash and garbage wherein the material is supported on a flat wire screen presenting sharp, upwardly directed edges and wherein the material is subjected to the force of jets under a high enough pressure to impact the material at at least 100 psi. The disclosure provides for varying the force of jets to accommodate differing qualities of material and to selectively comminute only that which is desired to be introduced into a slurry, the force being insufficient to comminute materials to be rejected.
Inventors
- 👤 Edgar M. Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:37
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092; Y; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
Apparatus for comminuting cellulosic materials comprising: a foraminous bar type conveyor providing substantially rigid sharp edges for supporting said materials, at least one jet impact nozzle overlying said conveyor, means for supplying water under high pressure to said nozzle to impact said conveyor with a force of at least approximately 100 psi, means for moving said conveyor past said nozzle, and means for reciprocating said nozzle in a direction transverse to movement of said conveyor.
Claim 2
Dependent Claim
75 words
Apparatus for comminuting cellulosic materials comprising: a foraminous bar type conveyor providing substantially rigid sharp edges for supporting said materials, at least one jet impact nozzle overlying said conveyor, means for supplying water under high pressure to said nozzle to impact said conveyor with a force of at least approximately 100 psi, means for moving said conveyor past said nozzle, and means for reciprocating said nozzle in a direction transverse to movement of said conveyor.
Claim 3
Dependent Claim
49 words
Apparatus according to claim 1 further comprising: a plurality of laterally spaced nozzles, the length of the reciprocating stroke combined with the motion of the conveyor and impact area of the water on the conveyor providing complete coverage of the operating area of said conveyor with high impact water.
Claim 4
Dependent Claim
44 words
Apparatus according to claim 1 in which said nozzle has approximately the following dimensional relationships with respect to said conveyor: 1/16 inch diameter nozzle orifice, one square inch impact area on said conveyor, the distance between said nozzle and said conveyor being twelve inches.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 3 in which said water supplying means supplies water to said nozzle at a pressure of at least approximately 1000 psi.
Claim 6
Dependent Claim
46 words
Apparatus according to claim 1 further comprising: a first line of laterally spaced nozzles, a second line of said laterally spaced nozzles, said first and second lines of nozzles being longitudinally spaced from each other, and means for transversely reciprocating said nozzles 180° out of phase.
Claim 7
Dependent Claim
20 words
Apparatus according to claim 1 in which said bar type conveyor has approximately a one inch by one inch mesh.
Claim 8
Dependent Claim
38 words
Apparatus according to claim 1 further comprising: a tank disposed below said conveyor, said tank having a V-shaped bottom, a grit outlet in the apex of said V-shaped bottom and a slurry outlet spaced above said grit outlet.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 7 further comprising: means for discharging rejected material from the downstream end of the upper flight of said conveyor.
Claim 10
Dependent Claim
38 words
Apparatus according to claim 1 further comprising: a drenching station located in the path of said conveyor and spaced upstream from said nozzle, said drenching station including means for thoroughly soaking with water the material on said conveyor.
Claim 11
Dependent Claim
38 words
Apparatus according to claim 9 in which said drenching station includes jets spaced above said conveyor for spraying material on said conveyor with water and a tank adapted to contain water at a level substantially above said conveyor.
Claim 12
Dependent Claim
16 words
Apparatus according to claim 1 further comprising: means for varying the impact force of said water.
Claim 13
Independent Claim
70 words
The method of comminuting cellulosic material comprising the steps of: rigidly supporting said material on a backing of sharp edges, impacting said materail with water at a force of at least approximately 100 psi, and reciprocating a jet of water directed onto said material in a first direction to perform said impacting step and conveying said material past said reciprocating jet in a direction perpendicular to the direction of reciprocation.
Claim 14
Independent Claim
70 words
The method of comminuting cellulosic material comprising the steps of: rigidly supporting said material on a backing of sharp edges, impacting said materail with water at a force of at least approximately 100 psi, and reciprocating a jet of water directed onto said material in a first direction to perform said impacting step and conveying said material past said reciprocating jet in a direction perpendicular to the direction of reciprocation.
Claim 15
Independent Claim
102 words
The method of converting trash, garbage and the like into a useful product comprising the steps of: supporting the material to be converted on a mesh belt having upwardly facing sharp edges, impacting said material with jets of water, the force of impact on said material being at least approximately 100 psi, the impacting force being sufficiently high to comminute the material to be converted to a useful form and insufficiently high to comminute the harder to destruct, less desirable materials, and reciprocating the jets of water in a transverse direction while conveying the material underneath the jets in a longitudinal direction.
Claim 16
Independent Claim
102 words
The method of converting trash, garbage and the like into a useful product comprising the steps of: supporting the material to be converted on a mesh belt having upwardly facing sharp edges, impacting said material with jets of water, the force of impact on said material being at least approximately 100 psi, the impacting force being sufficiently high to comminute the material to be converted to a useful form and insufficiently high to comminute the harder to destruct, less desirable materials, and reciprocating the jets of water in a transverse direction while conveying the material underneath the jets in a longitudinal direction.
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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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |