USRE39948E1 - Seal bearing assembly for use in a solid waste comminutor - Google Patents
Seal bearing assembly for use in a solid waste comminutor Download PDFInfo
- Publication number
- USRE39948E1 USRE39948E1 US11/111,975 US11197505A USRE39948E US RE39948 E1 USRE39948 E1 US RE39948E1 US 11197505 A US11197505 A US 11197505A US RE39948 E USRE39948 E US RE39948E
- Authority
- US
- United States
- Prior art keywords
- bearing
- seal
- housing
- assembly
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
- B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C2018/188—Stationary counter-knives; Mountings thereof
Definitions
- This invention relates to a solid waste comminuting apparatus.
- Such devices have been established in the art and are now widely used in a variety of industrial applications, such as municipal waste treatment and industrial applications.
- comminution is the reduction of particle size of solid waste material to minute particles. It is generally performed by shearing, shredding and crushing of the waste material. As set forth in the '324 patent, comminution occurs by utilizing a pair of counter-rotating intermeshed cutting members.
- the solid waste material is fed into the interface between cutting elements, typically utilizing a fluid carrier medium, and shearing action occurs because the two cutters overlap each other such that opposing forces of counter-rotation of the cutting elements on the different stacks act on the solid material as it passes through the device.
- such devices are generally used in an enfluent path. That is, the solid material is generally entrained in a liquid and the device is placed directly in the liquid stream. By having the solid material entrained in a liquid stream transportation of the material to and from the unit occurs. Further, by softening the solid particles, a greater degree of comminution is achieved.
- Devices of the type disclosed in the '324 patent have found commercial success and are widely used in waste treatment facilities, shipboard use and the like. As can be appreciated, the environment of use is very harsh for the equipment and as such, routine maintenance is required in both a preventative sense and also to immediately repair break downs when they occur thus minimizing system down-time.
- a further object of this invention is to provide a solid waste comminutor of improved seal and bearing life by improved seal effectiveness which is independent of stack tightness.
- Yet another object of this invention is to provide a seal cartridge for a solid waste comminutor which has an independent labyrinth that can be replaced without disassembly of the seal-bearing structure.
- Another object of this invention is to provide an improved solid waste comminutor that utilizes a separate wear piece independent of the seal cartridge which itself may be pre-loaded to provide a spring force for the cutter stack.
- a dual stack solid waste comminutor having preassembled bearing-sealed elements that are replaceable individually. That modular assembly improves system life while minimizing down-time.
- a cartridge type seal is employed utilizing two modular assemblies, one on each end of the cutter stack.
- Each of the modular bearing-seal assemblies comprises a pair of identical bearing-seal cartridges. Two identical bearing-seal cartridges are assembled into the end housing to thus form top and bottom modular pairs.
- the bearing-seal cartridges float within the housing to provide movement with shaft movement thereby reducing the stress on the shafts and bearings.
- a quick exchange of the mechanical subassembly, which includes bearings, O-ring seals and cartridge housing itself can be effectuated.
- an individual seal cartridge can be installed quickly without the need to disassemble the entire subassembly.
- bearing-seal cartridge is identical for the top and bottom of the cutter stack.
- the bearing-seal cartridge is an item which is pre-assembled and installed as received.
- the cartridge is interchangeable as a unit and is inserted into the end housing.
- Another advantage of this invention is an early warning seal failure detection system which can be used to prevent premature bearing failure.
- the invention provides for a drain port and/or weep holes in the shafts that allow fluid permeating from the seal to escape to the exterior. This can thus be viewed by maintenance personnel during routine checks of the system.
- FIG. 1 is a cut-away side view of the overall comminution system of this invention.
- FIG. 2 is a schematic view illustrating the seal cartridges and their assembly to form a dual seal cartridge .
- FIG. 1 a cut-away side view of the overall system is depicted.
- the housing 1 has an inlet and outlet, not illustrated.
- a pair of access cut-outs 4 are provided to permit stack tightening, to be described herein, without disassembly of the device.
- the unit employs, three essential subsystems, which comprise a complete comminution apparatus 10 . These are a drive subsystem 11 with a motor 24 and speed reducer 12 , a gearing subsystem 14 , and a cutting subsystem 16 .
- the housing 26 for the speed reducer 12 is mounted to the gear and cutter system 14 , 16 by a pair of conforming flange elements 18 , 20 , which are clamped together by means of bolts 22 .
- the motor is typically an electric drive motor 24 , the details of which need not be discussed in detail. It will be recognized by those skilled that a suitable motor and drive system can be employed consistent with the scope of intended use.
- the speed reducer is contained in a housing 26 and employs an input shaft 30 and an output shaft 28 .
- the input shaft 30 is journaled for rotation using a coupling 32 to the motor 24 . This provides axial and radial alignment of the motor unit 24 with the speed reducer 12 .
- the output shaft 28 of the speed reducer 12 passes through a transition piece 34 in which the output shaft 28 is keyed to a drive shaft 36 of one cutter stack by means of a coupling 35 .
- the drive shaft 36 carries a gear 38 .
- the drive shaft 37 of the other cutter stack carries a gear 40 .
- Both gears 38 and 40 are housed in housing 42 of the gear unit 14 .
- the two gears provide counter-rotation to a pair of cutter stacks 44 , 46 . That is, shaft 36 is the drive shaft and shaft 37 is the driven shaft which counter-rotates due to gears 38 , 40 .
- Each of the cutter stacks 44 , 46 comprises an alternating sequence of cutting elements 48 and spacers 50 .
- the interface is such that by beginning the stack 44 with a cutter element and stack 46 with a spacer element the cutter elements interleave with each other in the area between the two cutter stacks, which has been denoted by numeral 52 . It is this interactive pair of stacks in zone 52 which provides the shredding of material as it passes through the cutter elements.
- the cutter elements themselves may be either the same on each stack or differ from stack to stack. For example, it has been found that having eleven teeth on one cutter element and five on the opposing element improves the clean-out efficiency of the unit. Moreover, the geometry of the cutter elements may also be different in addition to the variations in the number of teeth.
- FIG. 1 the cutter stack 16 is supported top and bottom by means of a pair of bearing-seal assemblies/modules 54 , 56 .
- FIG. 2 illustrated in greater detail those two subassemblies.
- FIG. 2 illustrates the seal bearing assembly 56 .
- the units are assembled into respective end housings, 58 and 60 .
- FIG. 2 illustrates the end housing 60 .
- two identical bearing-seal cartridges are employed in the end housing.
- FIG. 2 illustrates on seal one element/assembly 62 in place with a second seal element/assembly 64 being inserted into the end housing 60 .
- ends 66 , 68 of the shafts 36 and 37 for the respective cutter assemblies 44 and 46 Illustrated in phantom line in FIG. 2 are the ends 66 , 68 of the shafts 36 and 37 for the respective cutter assemblies 44 and 46 . It will be understood that the shaft ends 66 and 68 protrude through the respective seal cartridges but are held in place by end nuts 69 . Stack tightness is achieved by tightening the end nuts 69 . Access is via the cut-outs 4 so that an individual stack may be tightened. O-rings 70 , and 72 are employed to provide a fluid tight seal for each shaft.
- the bearing-seal cartridge comprises a cartridge housing 74 with an outer flange 76 and an inner tubular portion 78 .
- a spring 80 is inserted between the flange portion 76 and the cylindrical portion 78 .
- a dynamic race 82 sealed by means of an O-ring 84 is placed relative to the spring 80 and the cylindrical portion 78 .
- This spring provides a means by which the race 82 is provided with float.
- a static race 86 with an O-ring 84 forms the dual race structure.
- the race is held in place by means of the bearing cartridge 88 having a flange element 91 to cage the static race into position and to also limit axial travel of the dynamic race.
- the dynamic race 82 has a face in contact with a confronting face of static race 86 .
- a bearing structure 90 is housed inside the bearing cartridge and is held in place by means of a retaining ring, such as a snap ring illustrated as element 92 .
- a second spring 87 may optionally be used to allow the races 82 and 86 to axially float. The advantage is prevention of potential skew of the faces of the races relative to each other.
- the second seal cartridge element/assembly has an identical construction of its elements.
- the units are held in place and are biased by means of springs 94 , 96 .
- Those springs provide float for the bearing-seal cartridges 62 , 64 , 66 .
- Sealing occurs by means of O-rings 98 , 100 . It will be appreciated that with respect to the seal cartridge illustrated in its installed position on the right hand side of FIG. 2 the same elements are present. They have been denoted with prime numbers to connote the same numbering sequence.
- the upper end seal-bearing module may be provided with an upper spacer 103 . This spacer rests on the outer race to preload the top bearing stack as the housing 42 is mounted on the housing 58 via bolts 104 .
- the labyrinth illustrated by dotted lines with numeral 102 is not a part of the seal- bearing assembly. Rather, the labyrinth is considered to be a part of the stack assembly and is separated from the seal cartridge assembly itself.
- the labyrinth 102 protrudes to the enfluent effluent stream where it is subjected to particles and the like while the device is in operation. Hence, it is a component that wears and must, from time to time be replaced.
- the labyrinth 102 can be replaced as a single component since it is merely placed into the annular groove 108 of the housing 60 . It is compressed into position by a force applied through annular raised surface 110 that loads the labyrinth on surface 111 , and causes it to slightly deflect. This deflection serves to compensate for wear in the cutter stack.
- this construction offers a number of important advantages.
- stack tightening occurs independent of compression forces on the seal components. This occurs because, in accordance with this invention, the cartridges themselves are positioned and loaded independent of the cutter stack. That is the housing 58 is attached to gear housing 42 by means of the bolts 104 . Tightening the cutter stacks by means of the nuts 69 does not increase the forces on the bearings or seals. Rather, the force is a function of the spring force of the spring 80 .
- This invention also includes a provision of leak detection by means of a leak detection plug 108 .
- a leak detection plug 108 provides a provision of leak detection by means of a leak detection plug 108 .
- an upper seal failure can be ascertained by fluid in the upper housing via the leak detection plug 108 . If there is any water in the warea, it will alert personnel that there is a potential failure in the upper bearing-seal.
- a leakage path can be provided in each of the shafts 36 , 37 . To the extent that fluid permeates the seal it will thus escape to the exterior where it can be viewed during routine maintenance checks.
- a cartridge type bearing-seal 64 allows for replacement of units on an individual basis as opposed to replacement of the entire seal pair at the top or bottom of the cutter stack. Additionally, the entire assembly with the bearings intact can be removed from the housing for servicing. Given the construction of those cartridge elements tightening of the cutter stack can be accomplished without impairing the effectiveness of the seal. That is, compression of the seal components themselves occurs during the assembly of each of the seals cartridge units illustrated in FIG. 2 . Thus, the integrity of those units is accomplished independent of the tightness of the cutter stack.
- the labyrinth 102 is placed between the main fluid chamber and either of the seal faces.
- the labyrinth 102 is distinct and separate from each of the seal cartridges. To the extent that the labyrinth requires replacement, it can be done by removing the cartridge, inserting a new labyrinth and then reinstallation of the cartridge 56 , 60 without any disassembly of the seal components.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
Claims (35)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/111,975 USRE39948E1 (en) | 1993-06-16 | 2005-04-22 | Seal bearing assembly for use in a solid waste comminutor |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/077,106 US5354004A (en) | 1993-06-16 | 1993-06-16 | Solid waste comminutor |
US08/275,724 US5478020A (en) | 1993-06-16 | 1994-07-19 | Seal bearing assembly for use in a solid waste comminutor |
US11/111,975 USRE39948E1 (en) | 1993-06-16 | 2005-04-22 | Seal bearing assembly for use in a solid waste comminutor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/275,724 Reissue US5478020A (en) | 1993-06-16 | 1994-07-19 | Seal bearing assembly for use in a solid waste comminutor |
Publications (1)
Publication Number | Publication Date |
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USRE39948E1 true USRE39948E1 (en) | 2007-12-25 |
Family
ID=26758891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/111,975 Expired - Lifetime USRE39948E1 (en) | 1993-06-16 | 2005-04-22 | Seal bearing assembly for use in a solid waste comminutor |
Country Status (1)
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US (1) | USRE39948E1 (en) |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US558642A (en) * | 1896-04-21 | Andrew b | ||
US2688520A (en) * | 1950-09-11 | 1954-09-07 | Union Oil Co | Pressure seal for rotating shafts |
US3343891A (en) * | 1964-07-06 | 1967-09-26 | Kaiser Steel Corp | Seal device |
US4046324A (en) | 1973-06-22 | 1977-09-06 | Chambers Joseph W | Solid waste comminutor |
US4114902A (en) * | 1977-10-07 | 1978-09-19 | Inpro, Inc. | Sealing rings |
US4127310A (en) * | 1977-09-06 | 1978-11-28 | Ecolaire Incorporated | Shaft bearing and seal with self-lubricating sleeve bearing |
US4253713A (en) | 1979-10-22 | 1981-03-03 | Disposable Waste Systems, Inc. | High integrity fluid pressure rotary shaft seal |
US4482194A (en) | 1983-09-12 | 1984-11-13 | Disposable Waste Systems, Inc. | Fluid pressure assisted rotary shaft seal with labyrinth bushing and replacement seal sleeve cartridge |
US4630458A (en) * | 1985-03-12 | 1986-12-23 | Durametallic Corporation | Seal arrangement for mill roll |
US4702422A (en) * | 1986-09-19 | 1987-10-27 | Disposable Waste Systems, Inc. | Solid waste comminutor with slotted slide rails and side rails for same |
US4707150A (en) | 1987-01-14 | 1987-11-17 | Disposable Waste Systems, Inc. | Fluid pressure assisted rotary shaft seal with grooved seal wedge |
US4706968A (en) * | 1986-12-01 | 1987-11-17 | Orlowski David C | Sealing rings with complimentary ring members |
US4743034A (en) * | 1987-03-27 | 1988-05-10 | Durametallic Corporation | Labyrinth bearing protector seal |
US4799627A (en) * | 1981-12-19 | 1989-01-24 | Mmd Design And Consultancy Limited | Mineral sizers |
US4890941A (en) * | 1989-04-14 | 1990-01-02 | Durametallic Corporation | Bearing protector with slinger ring |
US4919346A (en) | 1987-11-27 | 1990-04-24 | Disposable Waste Systems, Inc. | Rotary screen diverter and solid waste handling system using same |
US4961540A (en) * | 1989-08-31 | 1990-10-09 | Wiesemann Enterprises, Inc. | Three shaft comminution apparatus |
US5048764A (en) * | 1989-11-06 | 1991-09-17 | Flament Gregory J | Apparatus for comminuting solid waste |
US5158304A (en) * | 1990-01-23 | 1992-10-27 | Inpro Companies, Inc. | Captured rotor seal |
US5163629A (en) * | 1991-05-01 | 1992-11-17 | Cummins-Allison Corp. | Shredder cutting discs |
US5207392A (en) * | 1990-03-17 | 1993-05-04 | Schleicher & Co. International Aktiengesellschaft | Cutting mechanism for a document shredder |
US5221095A (en) * | 1989-06-14 | 1993-06-22 | Inpro Companies, Inc. | Static and dynamic shaft seal assembly |
US5261750A (en) * | 1991-05-10 | 1993-11-16 | Deere & Company | Bearing assembly |
US5320286A (en) | 1987-11-27 | 1994-06-14 | Disposable Waste Systems, Inc. | Rotary screen diverter & solid waste handling system using same |
US5375934A (en) * | 1990-02-13 | 1994-12-27 | Rexnord Corporation | Replacement bearing for worn shafts |
US5505388A (en) | 1994-09-29 | 1996-04-09 | Disposable Waste Company, Inc. | Integrated diverter and waste comminutor |
US5593100A (en) | 1993-06-16 | 1997-01-14 | Disposable Waste Systems, Inc. | Solid waste comminutor with removable bearing assembly and improved side rails |
US6176443B1 (en) | 1998-09-25 | 2001-01-23 | Disposable Waste Systems, Inc. | Integrated diverter and waste comminutor |
USRE37550E1 (en) | 1993-06-16 | 2002-02-19 | Disposable Waste Systems, Inc. | Solid waste comminutor with removable bearing assembly and improved side rails |
-
2005
- 2005-04-22 US US11/111,975 patent/USRE39948E1/en not_active Expired - Lifetime
Patent Citations (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US558642A (en) * | 1896-04-21 | Andrew b | ||
US2688520A (en) * | 1950-09-11 | 1954-09-07 | Union Oil Co | Pressure seal for rotating shafts |
US3343891A (en) * | 1964-07-06 | 1967-09-26 | Kaiser Steel Corp | Seal device |
US4046324A (en) | 1973-06-22 | 1977-09-06 | Chambers Joseph W | Solid waste comminutor |
US4127310A (en) * | 1977-09-06 | 1978-11-28 | Ecolaire Incorporated | Shaft bearing and seal with self-lubricating sleeve bearing |
US4114902A (en) * | 1977-10-07 | 1978-09-19 | Inpro, Inc. | Sealing rings |
US4253713A (en) | 1979-10-22 | 1981-03-03 | Disposable Waste Systems, Inc. | High integrity fluid pressure rotary shaft seal |
US4799627A (en) * | 1981-12-19 | 1989-01-24 | Mmd Design And Consultancy Limited | Mineral sizers |
US4482194A (en) | 1983-09-12 | 1984-11-13 | Disposable Waste Systems, Inc. | Fluid pressure assisted rotary shaft seal with labyrinth bushing and replacement seal sleeve cartridge |
US4630458A (en) * | 1985-03-12 | 1986-12-23 | Durametallic Corporation | Seal arrangement for mill roll |
US4702422A (en) * | 1986-09-19 | 1987-10-27 | Disposable Waste Systems, Inc. | Solid waste comminutor with slotted slide rails and side rails for same |
US4706968A (en) * | 1986-12-01 | 1987-11-17 | Orlowski David C | Sealing rings with complimentary ring members |
US4707150A (en) | 1987-01-14 | 1987-11-17 | Disposable Waste Systems, Inc. | Fluid pressure assisted rotary shaft seal with grooved seal wedge |
US4743034A (en) * | 1987-03-27 | 1988-05-10 | Durametallic Corporation | Labyrinth bearing protector seal |
US5320286A (en) | 1987-11-27 | 1994-06-14 | Disposable Waste Systems, Inc. | Rotary screen diverter & solid waste handling system using same |
US5060872A (en) | 1987-11-27 | 1991-10-29 | Chambers, Boyd, Mckinley And Associates | Rotary screen diverter and solid waste handling system using same |
US4919346A (en) | 1987-11-27 | 1990-04-24 | Disposable Waste Systems, Inc. | Rotary screen diverter and solid waste handling system using same |
US5333801A (en) | 1987-11-27 | 1994-08-02 | Disposable Waste Systems, Inc. | Rotary screen diverter and solid waste handling system using same |
US4890941A (en) * | 1989-04-14 | 1990-01-02 | Durametallic Corporation | Bearing protector with slinger ring |
US5221095A (en) * | 1989-06-14 | 1993-06-22 | Inpro Companies, Inc. | Static and dynamic shaft seal assembly |
US4961540A (en) * | 1989-08-31 | 1990-10-09 | Wiesemann Enterprises, Inc. | Three shaft comminution apparatus |
US5048764A (en) * | 1989-11-06 | 1991-09-17 | Flament Gregory J | Apparatus for comminuting solid waste |
US5158304A (en) * | 1990-01-23 | 1992-10-27 | Inpro Companies, Inc. | Captured rotor seal |
US5375934A (en) * | 1990-02-13 | 1994-12-27 | Rexnord Corporation | Replacement bearing for worn shafts |
US5207392A (en) * | 1990-03-17 | 1993-05-04 | Schleicher & Co. International Aktiengesellschaft | Cutting mechanism for a document shredder |
US5163629A (en) * | 1991-05-01 | 1992-11-17 | Cummins-Allison Corp. | Shredder cutting discs |
US5261750A (en) * | 1991-05-10 | 1993-11-16 | Deere & Company | Bearing assembly |
US5593100A (en) | 1993-06-16 | 1997-01-14 | Disposable Waste Systems, Inc. | Solid waste comminutor with removable bearing assembly and improved side rails |
USRE37550E1 (en) | 1993-06-16 | 2002-02-19 | Disposable Waste Systems, Inc. | Solid waste comminutor with removable bearing assembly and improved side rails |
US5505388A (en) | 1994-09-29 | 1996-04-09 | Disposable Waste Company, Inc. | Integrated diverter and waste comminutor |
USRE37349E1 (en) | 1994-09-29 | 2001-09-04 | Chambers, Boyd And Associates | Integrated diverter and waste comminutor |
US6176443B1 (en) | 1998-09-25 | 2001-01-23 | Disposable Waste Systems, Inc. | Integrated diverter and waste comminutor |
US6332984B1 (en) | 1998-09-25 | 2001-12-25 | Chambers, Boyd And Associates | Integrated diverter and waste comminutor |
Non-Patent Citations (14)
Title |
---|
Resubmittal Data-South Shore, Milwaukee, Wisconsin; Chambers Environmental Int'l S.O. #19354, Mar. 7, 1991. |
Specifications for Residuals Treatment Facilities Phase 1, Deer Island, Boston Massachusetts, Part B, Technical Specifications Vol. III of VII, Massachusetts Water Resources Authority Contract No. 5723, Contract Package No. 301, pp. 1-11, Apr. 26, 1991. |
Submittal Data-Carlinville, Illinois; JWC Environmental S.O. #20783, Feb. 26, 1991. |
Submittal Data-Castle Valley, Daylestown, Pennsylvania; JWC Environmental S.O. #20378, Jan. 15, 1991. |
Submittal Data-Chalfont-New Britain Township Joint Sewage Authority, Doylestown, Pennsylvania; JWC Environmental S.O. #20938, Mar. 18, 1991. |
Submittal Data-Dilly, Texas; JWC Environmental S.O. #20306, Dec. 19, 1990. |
Submittal Data-Generostee Creek W.W.T.P., Anderson, South Carolina; Chambers Environmental Int'l S.O. #19126, Jul. 25, 1990. |
Submittal Data-Kalamazoo, Michigan; JWC Environmental S.O. #20769, Feb. 26, 1991. |
Submittal Data-Mead Paper, Kingsport, Tennessee; JWC Environmental S.O. #20972, Mar. 15, 1991. |
Submittal Data-Melbourne Airport, Melbourne, Florida; JWC Environmental S.O. #20513, Jan. 30, 1991. |
Submittal Data-Nassau County Correctional Center, JWC Environmental S.O. #19488, Dec. 10, 1990. |
Submittal Data-New York City, Wards Island Sludge Dewatering Facility; JWC Environmental S.O. #19491, Mar. 20, 1991. |
Submittal Data-Theresa Street Plant, Lincoln, Nebraska; JWC Environmental S.O. #19896, Mar. 8, 1991. |
Submittal Data-Westbrook, Maine; JWC Environmental S.O. #20748, Feb. 25, 1991. |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JWC ENVIRONMENTAL, CALIFORNIA Free format text: MERGER/CHANGE OF NAME;ASSIGNOR:DISPOSABLE WASTE SYSTEMS, INC.;REEL/FRAME:016508/0816 Effective date: 19990809 |
|
AS | Assignment |
Owner name: JWC ENVIRONMENTAL, LLC, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JWC ENVIRONMENTAL;REEL/FRAME:026774/0040 Effective date: 20110803 |
|
AS | Assignment |
Owner name: MADISON CAPITAL FUNDING LLC, AS AGENT, ILLINOIS Free format text: SECURITY AGREEMENT;ASSIGNOR:JWC ENVIRONMENTAL, LLC;REEL/FRAME:026909/0831 Effective date: 20110803 |
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