US20050180840A1 - Fluid connector - Google Patents
Fluid connector Download PDFInfo
- Publication number
- US20050180840A1 US20050180840A1 US10/995,698 US99569804A US2005180840A1 US 20050180840 A1 US20050180840 A1 US 20050180840A1 US 99569804 A US99569804 A US 99569804A US 2005180840 A1 US2005180840 A1 US 2005180840A1
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- Prior art keywords
- shaft
- head
- bolt
- sections
- threaded section
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
Definitions
- This invention relates to connectors for fluid distribution systems, and particularly to fluid connectors used to distribute fluids under pressure.
- Fluid connectors are known in the art and are referred to as “flow bolts” or “flow bolt assemblies.” Such devices in the prior art are typically fabricated with external threads and an internal cavity through which fluid flows. Examples of such flow bolts are shown in U.S. Pat. No. 5,011,192 to Campo, entitled “Bolt Retaining Hydraulic End Fitting Assembly.” However, such flow bolts are weaker connectors because they are made with an internal cavity.
- the present invention is directed to overcoming this and other disadvantages inherent in prior art systems.
- a fluid connector comprising a shaft having at least one solid shaft element and a plurality of connector surfaces, wherein the plurality of connector surfaces includes a surface with a plurality of threads and a plurality of grooves.
- FIG. 1 depicts a preferred embodiment of a fluid connector.
- FIG. 2 depicts the bottom view of the preferred embodiment of a fluid connector seen in FIG. 1 .
- FIG. 3 depicts an alternative embodiment of a fluid connector.
- FIG. 4 depicts a view of the outside of a second embodiment of a fluid connector.
- FIG. 5 depicts a third embodiment of a fluid connector.
- FIG. 6 depicts a fourth embodiment of a fluid connector.
- FIGS. 1 and 2 show a fluid connector 10 in the form of a flow bolt constituting a preferred embodiment of the present invention.
- the flow bolt 10 is composed of a metal, preferably aluminum.
- the metal is copper.
- the metal is iron.
- the metal is an alloy. According to one aspect of the present invention, the metal includes ferrous and non ferrous materials. According to another aspect of the present invention, the metal is a steel. Those skilled in the art will appreciate that steel is in a plurality of formulations, such as stainless steel. According to one embodiment of the present invention the steel is a low carbon steel. In another embodiment of the present invention, the steel is a medium carbon steel. According to yet another embodiment of the present invention, the steel is a high carbon steel.
- the metal is a super alloy.
- the super alloy is bronze; according to another aspect of the present invention, the super alloy is a high nickel material.
- the flow bolt 10 is composed of martensitic material.
- the flow bolt 10 is composed of austenitic material.
- the metal is a ferritic material.
- the flow bolt 10 includes a shaft 20 and a head 60 .
- the shaft 20 is composed of a plurality of shaft sections.
- the shaft is cylindrical in shape.
- the shaft is frusto-conical in shape.
- the shaft is solid.
- the shaft is hollow.
- FIG. 1 depicts the preferred embodiment of the present invention wherein the flow bolt shaft 20 is composed of a plurality of shaft sections 21 , 22 , 23 and 40 .
- the shaft 20 includes an upper cylindrical shaft section 21 , a lower cylindrical shaft section 22 , an intermediate frusto-conical shaft section 23 and a threaded shaft section 40 .
- the upper cylindrical shaft section 21 is joined to the lower cylindrical shaft section 22 via the frusto-conical shaft section 23 .
- the flow bolt shaft 20 of the present invention is provided with a plurality of connector surfaces.
- the cylindrical shaft section 22 has an unthreaded surface, as does the cylindrical shaft section 21 .
- the cylindrical shaft 22 has a smaller diameter than the shaft section 21 .
- the shaft section 40 below the shaft section 22 is externally threaded, as illustrated.
- FIG. 1 depicts the preferred embodiment flow bolt 10 of the present invention composed of a plurality of connector surfaces.
- FIG. 2 depicts a bottom view of the preferred embodiment flow bolt 10 of the present invention.
- the lower cylindrical shaft section 22 and the externally threaded shaft section 40 have a plurality of grooves 50 formed into their outer surfaces and extending longitudinally from the frusto-conical section 23 to the free end of the threaded section 40 .
- the connector surfaces of the present invention perform a plurality of functions.
- the threads of the section 40 function to fasten the fluid connector flow bolt 10 to another structure. This function is accomplished through the interaction of the threads and cooperating threads of another structure (not shown).
- the grooves 50 function to channel fluid from around the cylindrical shaft section 22 of the shaft 20 to the free end of the shaft. This function is accomplished with at least one groove 50 , although more are preferred, as illustrated here.
- the flow bolt 10 is fabricated through a plurality of processes. According to one aspect of the present invention, the flow bolt 10 is machined. According to another aspect of the present invention, the flow bolt 10 is hot formed or forged. According to yet another aspect of the present invention, the flow bolt 10 is fabricated through casting. The preferred embodiment of the flow bolt is cold formed (also known as “cold head”).
- the process of cold forming the preferred embodiment begins with a metal wire or metal rod which is drawn to size. After being drawn to size, the wire or rod is upset by being run through a series of dies or extrusions. After the wire has been through a series of dies or extrusions, it has been changed to a semi formed state. In this semi formed state, the metal is rolled so that a surface with at least one groove 50 is formed. In the preferred embodiment, a plurality of grooves 50 are rolled into the shaft 20 so that they form spirals. Those skilled in the art will appreciate that the grooves 50 can be fabricated so that they are straight and do not form spirals however and, furthermore, that the grooves can be fabricated with any degree of spiral.
- FIG. 1 illustrates grooves 50 fabricated through rolling
- a groove or grooves may be fabricated in other ways.
- the grooves of the present invention are not limited to fabrication through rolling.
- a groove is any structure which allows for fluid flow on a connector surface.
- threads are formed on the surface of the shaft section 40 through a similar rolling process.
- threads are rolled to a depth which is half the depth of the grooves 50 .
- grooves and the threads can be made through machining or drilling with a different ratio of relative depths.
- present invention can be threaded first and then rolled to form the grooves.
- the presently preferred flow bolt 10 embodiment includes a polygonal cap 60 as a torque transferring structure.
- a torque transferring structure is any structure which allows a torque to be transferred to shaft 20 of the present invention.
- the torque transferring structure 60 is used to rotate the shaft 20 and tighten or loosen the threaded connection between the flow bolt 10 and another structure.
- the torque transferring structure is a recessed area 61 , such as will fit a screw driver (see FIG. 4 ).
- torque may be transferred via any of a plurality of structures and that any such structure can be used without departing from the spirit of the present invention.
- Any structure which allows a torque to be transferred to the shaft 20 of the present invention is a torque transferring structure within the scope of the present invention.
- FIG. 3 depicts the hollow shaft clement of an alternative embodiment of the present invention.
- a surface with a plurality of threads 40 defines an inner section 24 which accommodates a threaded rod 25 .
- a groove 50 is provided through which fluid flows.
- the alternative embodiment is preferably provided with a torque transferring structure 60 , which is in the form of a roughened gripping surface 62 .
- torque may be transferred through other structures, such as a recessed area 61 , as depicted in FIG. 4 and previously discussed.
- FIG. 4 depicts the outer surface 26 of the hollow shaft element of the alternative embodiment of the present invention with an alternative torque transferring structure 60 .
- FIG. 5 depicts a second alternative embodiment of the present invention.
- a surface with a plurality of threads 40 defines an inner section 24 which accommodates a threaded rod.
- a groove is provided through which fluid flows.
- an opening 27 is provided which accommodates a fluid conveying structure, such as a nozzle (not shown).
- a fluid conveying structure such as a nozzle (not shown).
- the opening 27 may be defined in the outer surface 26 .
- the inner section 24 accommodates a threaded rod.
- FIG. 6 depicts a third alternative embodiment of the present invention configured as a coupler 11 .
- the coupler 11 depicted in FIG. 6 is composed of an outer surface 26 and a surface with a plurality of threads 40 which defines an inner section 24 .
- the inner section 24 accommodates at least one threaded rod 25 , preferably two threaded rods.
- a groove 50 is provided through which fluid flows.
- the coupler 11 is preferably provided with a torque transferring structure 60 .
Abstract
The present invention relates to a fluid connector, comprising a solid shaft having a plurality of connector surfaces. The plurality of connector surfaces includes a surface with a plurality of threads and a plurality of grooves formed therein.
Description
- This application is a continuation of U.S. Ser. No. 10/177,310, filed Jun. 21, 2002, and entitled FLUID CONNECTOR.
- This invention relates to connectors for fluid distribution systems, and particularly to fluid connectors used to distribute fluids under pressure.
- Fluid connectors are known in the art and are referred to as “flow bolts” or “flow bolt assemblies.” Such devices in the prior art are typically fabricated with external threads and an internal cavity through which fluid flows. Examples of such flow bolts are shown in U.S. Pat. No. 5,011,192 to Campo, entitled “Bolt Retaining Hydraulic End Fitting Assembly.” However, such flow bolts are weaker connectors because they are made with an internal cavity.
- The present invention is directed to overcoming this and other disadvantages inherent in prior art systems.
- The scope of the present invention is defined solely by the appended claims, and is not affected to any degree by the statements within this summary. Briefly stated, a fluid connector, comprising a shaft having at least one solid shaft element and a plurality of connector surfaces, wherein the plurality of connector surfaces includes a surface with a plurality of threads and a plurality of grooves.
-
FIG. 1 depicts a preferred embodiment of a fluid connector. -
FIG. 2 depicts the bottom view of the preferred embodiment of a fluid connector seen inFIG. 1 . -
FIG. 3 depicts an alternative embodiment of a fluid connector. -
FIG. 4 depicts a view of the outside of a second embodiment of a fluid connector. -
FIG. 5 depicts a third embodiment of a fluid connector. -
FIG. 6 depicts a fourth embodiment of a fluid connector. - Turning now to the drawings,
FIGS. 1 and 2 show a fluid connector 10 in the form of a flow bolt constituting a preferred embodiment of the present invention. The flow bolt 10 is composed of a metal, preferably aluminum. According to one aspect of the present invention, the metal is copper. According to another aspect of the present invention, the metal is iron. - Those skilled in the art will appreciate that the metal is an alloy. According to one aspect of the present invention, the metal includes ferrous and non ferrous materials. According to another aspect of the present invention, the metal is a steel. Those skilled in the art will appreciate that steel is in a plurality of formulations, such as stainless steel. According to one embodiment of the present invention the steel is a low carbon steel. In another embodiment of the present invention, the steel is a medium carbon steel. According to yet another embodiment of the present invention, the steel is a high carbon steel.
- Those with skill in the art will also appreciate that the metal is a super alloy. According to one aspect of the present invention, the super alloy is bronze; according to another aspect of the present invention, the super alloy is a high nickel material. According to yet another aspect of the present invention, the flow bolt 10 is composed of martensitic material. According to still another aspect of the present invention, the flow bolt 10 is composed of austenitic material. According to another aspect of the present invention, the metal is a ferritic material.
- The flow bolt 10 includes a
shaft 20 and ahead 60. Theshaft 20 is composed of a plurality of shaft sections. According to one aspect of the present invention, the shaft is cylindrical in shape. According to another aspect of the present invention, the shaft is frusto-conical in shape. According to yet another aspect of the present invention, the shaft is solid. According to still another aspect of the present invention, the shaft is hollow. -
FIG. 1 depicts the preferred embodiment of the present invention wherein theflow bolt shaft 20 is composed of a plurality ofshaft sections shaft 20 includes an uppercylindrical shaft section 21, a lowercylindrical shaft section 22, an intermediate frusto-conical shaft section 23 and a threadedshaft section 40. In the preferred embodiment, the uppercylindrical shaft section 21 is joined to the lowercylindrical shaft section 22 via the frusto-conical shaft section 23. - The
flow bolt shaft 20 of the present invention is provided with a plurality of connector surfaces. Thecylindrical shaft section 22 has an unthreaded surface, as does thecylindrical shaft section 21. Thecylindrical shaft 22 has a smaller diameter than theshaft section 21. Theshaft section 40 below theshaft section 22 is externally threaded, as illustrated. -
FIG. 1 depicts the preferred embodiment flow bolt 10 of the present invention composed of a plurality of connector surfaces.FIG. 2 depicts a bottom view of the preferred embodiment flow bolt 10 of the present invention. The lowercylindrical shaft section 22 and the externally threadedshaft section 40 have a plurality ofgrooves 50 formed into their outer surfaces and extending longitudinally from the frusto-conical section 23 to the free end of the threadedsection 40. In the bolt 10 there are foursuch grooves 50 extending spirally and spaced 90° from each other around theshaft 20. - The connector surfaces of the present invention perform a plurality of functions. The threads of the
section 40 function to fasten the fluid connector flow bolt 10 to another structure. This function is accomplished through the interaction of the threads and cooperating threads of another structure (not shown). - In use of the flow bolt 10, the
grooves 50 function to channel fluid from around thecylindrical shaft section 22 of theshaft 20 to the free end of the shaft. This function is accomplished with at least onegroove 50, although more are preferred, as illustrated here. - The flow bolt 10 is fabricated through a plurality of processes. According to one aspect of the present invention, the flow bolt 10 is machined. According to another aspect of the present invention, the flow bolt 10 is hot formed or forged. According to yet another aspect of the present invention, the flow bolt 10 is fabricated through casting. The preferred embodiment of the flow bolt is cold formed (also known as “cold head”).
- The process of cold forming the preferred embodiment begins with a metal wire or metal rod which is drawn to size. After being drawn to size, the wire or rod is upset by being run through a series of dies or extrusions. After the wire has been through a series of dies or extrusions, it has been changed to a semi formed state. In this semi formed state, the metal is rolled so that a surface with at least one
groove 50 is formed. In the preferred embodiment, a plurality ofgrooves 50 are rolled into theshaft 20 so that they form spirals. Those skilled in the art will appreciate that thegrooves 50 can be fabricated so that they are straight and do not form spirals however and, furthermore, that the grooves can be fabricated with any degree of spiral. - While the preferred embodiment depicted in
FIG. 1 illustratesgrooves 50 fabricated through rolling, those skilled in the art will appreciate that a groove or grooves may be fabricated in other ways. The grooves of the present invention are not limited to fabrication through rolling. As used herein, a groove is any structure which allows for fluid flow on a connector surface. - After a plurality of
grooves 50 have been impressed into the surface, threads are formed on the surface of theshaft section 40 through a similar rolling process. In the preferred embodiment, threads are rolled to a depth which is half the depth of thegrooves 50. - Those skilled in the art will appreciate that the grooves and the threads can be made through machining or drilling with a different ratio of relative depths. Furthermore, those skilled in the art will appreciate that the present invention can be threaded first and then rolled to form the grooves.
- The presently preferred flow bolt 10 embodiment includes a
polygonal cap 60 as a torque transferring structure. As used herein, a torque transferring structure is any structure which allows a torque to be transferred toshaft 20 of the present invention. Thetorque transferring structure 60 is used to rotate theshaft 20 and tighten or loosen the threaded connection between the flow bolt 10 and another structure. Alternatively, the torque transferring structure is a recessed area 61, such as will fit a screw driver (seeFIG. 4 ). - Those skilled in the art will appreciate that torque may be transferred via any of a plurality of structures and that any such structure can be used without departing from the spirit of the present invention. Any structure which allows a torque to be transferred to the
shaft 20 of the present invention is a torque transferring structure within the scope of the present invention. -
FIG. 3 depicts the hollow shaft clement of an alternative embodiment of the present invention. In the alternative embodiment ofFIG. 3 , a surface with a plurality ofthreads 40 defines aninner section 24 which accommodates a threadedrod 25. Within the surface with a plurality ofthreads 40, agroove 50 is provided through which fluid flows. As depicted inFIG. 3 , the alternative embodiment is preferably provided with atorque transferring structure 60, which is in the form of a roughened grippingsurface 62. However, as noted above, those skilled in the art will appreciate that torque may be transferred through other structures, such as a recessed area 61, as depicted inFIG. 4 and previously discussed.FIG. 4 depicts the outer surface 26 of the hollow shaft element of the alternative embodiment of the present invention with an alternativetorque transferring structure 60. -
FIG. 5 depicts a second alternative embodiment of the present invention. As illustrated inFIG. 5 , a surface with a plurality ofthreads 40 defines aninner section 24 which accommodates a threaded rod. Within the surface with a plurality ofthreads 40, a groove is provided through which fluid flows. In the alternative embodiment depicted inFIG. 5 , anopening 27 is provided which accommodates a fluid conveying structure, such as a nozzle (not shown). Those skilled in the art will appreciate that theopening 27 may be defined in the outer surface 26. As illustrated inFIG. 5 , theinner section 24 accommodates a threaded rod. -
FIG. 6 depicts a third alternative embodiment of the present invention configured as a coupler 11. The coupler 11 depicted inFIG. 6 is composed of an outer surface 26 and a surface with a plurality ofthreads 40 which defines aninner section 24. Theinner section 24 accommodates at least one threadedrod 25, preferably two threaded rods. Within the threadedsurface 40, agroove 50 is provided through which fluid flows. As depicted inFIG. 6 , the coupler 11 is preferably provided with atorque transferring structure 60. - While this invention has been particularly shown and described with references to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A fluid flow bolt, comprising:
a shaft having an elongate structure and a head;
a plurality of channels extending into an outer portion of said shaft from a distal end of said shaft and having a first depth, wherein said channels have a spiral pattern and have a V-shaped cross sectional shape; and
a threading within said shaft having a plurality of threading grooves having a second depth and threading ridges;
said first depth being greater than said second depth.
2. The fluid flow bolt of claim 1 , wherein said V-shaped cross sectional shape has a rounded narrow portion and rounded broad ends.
3. The fluid flow bolt of claim 1 , wherein said channels are equally spaced apart with said shaft.
4. The fluid flow bolt of claim 1 , wherein said plurality of channels are comprised of a first channel, a second channel and a third channel.
5. The fluid flow bolt of claim 1 , wherein said channels extend from said distal end of said shaft completely through said threading and away from said threading a finite distance.
6. A flow bolt for conducting fluid from adjacent a bolt head to the free end of a bolt shaft, comprising:
a) an elongated shaft and a torque applying head, said head being formed unitarily with said shaft on one end of the shaft;
b) said shaft including a plurality of shaft sections between said head and the free end of said shaft;
c) a first one of said sections comprising an externally threaded section adjacent said free end of said shaft;
d) a second one of said sections comprising an unthreaded cylindrical section with a smooth outer surface between said threaded section and said head; and
e) a plurality of longitudinally extending grooves formed into the threads of said threaded section and into said outer surface of said second cylindrical section.
7. The flow bolt of claim 6 further characterized in that:
a) said shaft is solid along substantially its entire length.
8. A flow bolt for conducting fluid from adjacent a bolt head to the free end of a bolt shaft, comprising:
a) an elongated shaft and a torque applying head, said head being formed unitarily with said shaft on one end of the shaft;
b) said shaft being solid along substantially its entire length and including a plurality of shaft sections between said head and the free end of said shaft;
c) a first one of said sections comprising an externally threaded section adjacent said free end of said shaft;
d) a second one of said sections comprising an unthreaded cylindrical section with a smooth outer surface between said threaded section and said head;
e) a plurality of longitudinally extending grooves formed into the threads of said threaded section; and
f) said unthreaded section being disposed immediately adjacent said head and having a smooth cylindrical surface with a diameter greater than the diameter of said threaded section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/995,698 US20050180840A1 (en) | 2002-06-21 | 2004-11-23 | Fluid connector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/177,310 US7017952B2 (en) | 2002-06-21 | 2002-06-21 | Fluid connector |
US10/995,698 US20050180840A1 (en) | 2002-06-21 | 2004-11-23 | Fluid connector |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/177,310 Continuation US7017952B2 (en) | 2002-06-21 | 2002-06-21 | Fluid connector |
Publications (1)
Publication Number | Publication Date |
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US20050180840A1 true US20050180840A1 (en) | 2005-08-18 |
Family
ID=29999091
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US10/177,310 Expired - Fee Related US7017952B2 (en) | 2002-06-21 | 2002-06-21 | Fluid connector |
US10/993,684 Expired - Fee Related US7374494B2 (en) | 2002-06-21 | 2004-11-19 | Fluid connector |
US10/995,698 Abandoned US20050180840A1 (en) | 2002-06-21 | 2004-11-23 | Fluid connector |
Family Applications Before (2)
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US10/177,310 Expired - Fee Related US7017952B2 (en) | 2002-06-21 | 2002-06-21 | Fluid connector |
US10/993,684 Expired - Fee Related US7374494B2 (en) | 2002-06-21 | 2004-11-19 | Fluid connector |
Country Status (7)
Country | Link |
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US (3) | US7017952B2 (en) |
EP (1) | EP1534985A4 (en) |
JP (1) | JP2005530967A (en) |
CN (1) | CN1675489A (en) |
AU (1) | AU2003248683B2 (en) |
TW (1) | TWI225138B (en) |
WO (1) | WO2004001266A2 (en) |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110268533A1 (en) * | 2006-02-10 | 2011-11-03 | Norikazu Tezuka | Bolt and manufacturing method of bolt |
US8607604B2 (en) * | 2006-02-10 | 2013-12-17 | Mitsubishi Heavy Industries | Bolt and manufacturing method of bolt |
US20110132303A1 (en) * | 2008-08-02 | 2011-06-09 | Schaeffler Technologies Gmbh & Co. Kg | Device for variable adjustment of the timing of gas exchange valves of an internal combustion engine |
US20160153489A1 (en) * | 2014-11-28 | 2016-06-02 | Crompton Technology Group Limited | Composite tension/compression strut |
US10184509B2 (en) * | 2014-11-28 | 2019-01-22 | Crompton Technology Group Limited | Composite tension/compression strut |
Also Published As
Publication number | Publication date |
---|---|
US7017952B2 (en) | 2006-03-28 |
TWI225138B (en) | 2004-12-11 |
US20040007871A1 (en) | 2004-01-15 |
EP1534985A4 (en) | 2010-04-28 |
WO2004001266A2 (en) | 2003-12-31 |
WO2004001266A3 (en) | 2004-07-01 |
TW200401090A (en) | 2004-01-16 |
AU2003248683A1 (en) | 2004-01-06 |
CN1675489A (en) | 2005-09-28 |
JP2005530967A (en) | 2005-10-13 |
US7374494B2 (en) | 2008-05-20 |
AU2003248683B2 (en) | 2008-12-18 |
EP1534985A2 (en) | 2005-06-01 |
US20050103084A1 (en) | 2005-05-19 |
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Legal Events
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