Source: http://www.google.de/patents/US7757972
Timestamp: 2013-05-22 00:15:28
Document Index: 67780055

Matched Legal Cases: ['Application No. 2005252185', 'Application No. 2005254464', 'Application No. 2', 'Application No. 2006', 'Application No. 2006', 'Application No. 550037', 'Application No. 550403', 'Application No. 548243', 'art 1', 'Application No. 94117889', 'Application No. 094117887', 'Application No. 094118644']

Patent US7757972 - Conversion adapter for a fluid supply assembly - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteA conversion adapter for connecting a fluid supply assembly to a fluid applicator. The conversion adapter provides a connection between the fluid supply assembly and the fluid applicator. The conversion adapter has a first end and a second end, and a bore between the first end and the second end. The...http://www.google.de/patents/US7757972?utm_source=gb-gplus-sharePatent US7757972 - Conversion adapter for a fluid supply assembly Ver�ffentlichungsnummerUS7757972 B2PublikationstypErteilung Anmeldenummer11/235,717 Ver�ffentlichungsdatum20. Juli 2010Eingetragen26. Sept. 2005 Priorit�tsdatum3. Juni 2004Auch ver�ffentlicht unterCN100563843CCN101262952AEP1928610A1US20060017286WO2007037921A1 ErfinderMichael J. KosmynaRalph A. WisniewskiUrspr�nglich Bevollm�chtigterIllinois Tool Works Inc. US-Klassifikation239/600285/361239/345239/378220/495.2285/402Internationale KlassifikationB05B7/24B05B1/00 UnternehmensklassifikationB05B7/2478B05B7/2408 Europ�ische KlassifikationB05B7/24A24B05B7/24A3AReferenzenPatentzitate (100)Nichtpatentzitate (92) Referenziert von (1)Externe LinksUSPTO USPTO-Zuordnung EspacenetConversion adapter for a fluid supply assemblyUS 7757972 B2 Zusammenfassung A conversion adapter for connecting a fluid supply assembly to a fluid applicator. The conversion adapter provides a connection between the fluid supply assembly and the fluid applicator. The conversion adapter has a first end and a second end, and a bore between the first end and the second end. The first end has a complementary connecting surface mating with the connecting surface on the fluid supply assembly. The second end has a complementary connector in the bore, and a top and bottom. The complementary connector is selected from complementary grooves or complementary projections, and mates with the connector on the adapter of the fluid applicator.
1. A combination of a fluid supply assembly and a fluid applicator, comprising:
the fluid applicator comprising a spray gun having an adapter with a connector on an outer surface, the connector being at least one groove formed in the outer surface;
the fluid supply assembly comprising a cup and a lid covering an opening in the cup, the fluid supply assembly having a connecting surface; and
a conversion adapter having a first end and a second end, and a bore between the first end and the second end, the bore having a surface, the first end having a complementary connecting surface mating with the connecting surface on the fluid supply assembly, the second end having a complementary connector in the bore, the second end having a top and bottom, the complementary connector being at least one complementary projection, the complementary connector mating with the connector on the adapter of the fluid applicator, wherein the complementary projection engages the groove to secure the conversion adapter to the adapter of the fluid applicator.
2. The combination of claim 1 wherein the groove extends from a bottom of a second end of the adapter of the fluid applicator toward the top.
3. The combination of claim 1 wherein the groove forms a helix.
4. The combination of claim 1 wherein the groove is formed at a first angle from a plane of a bottom of a second end of the adapter of the fluid applicator.
5. The combination of claim 1 wherein the groove has a second portion near a top of a second end of the adapter of the fluid applicator, the second portion extending at a second angle from a plane of the groove.
6. The combination of claim 5 wherein the second portion of the groove extends parallel to a plane of a bottom of a second end of the adapter of the fluid applicator.
7. The combination of claim 1 wherein the complementary projection is positioned below the top of the second end of the conversion adapter.
8. The combination of claim 1 wherein a portion of the bottom of the conversion adapter is smaller than a bottom of the adapter of the fluid applicator to provide an interference fit with the conversion adapter.
9. The combination of claim 1 wherein the first end or the second end is generally cylindrical. Beschreibung
CROSS REFERENCE TO RELATED APPLICATIONS This application is a continuation-in-part of U.S. application Ser. No. 10/860,631, entitled Adapter Assembly for a Fluid Supply Assembly, filed Jun. 3, 2004.
BACKGROUND OF THE INVENTION The present invention is directed generally to a fluid supply assembly for a fluid applicator, and more particularly to a conversion adapter for connecting a fluid supply assembly to a fluid applicator.
SUMMARY OF THE INVENTION Therefore, there remains a need for a connection between a fluid supply assembly and a fluid applicator that can be engaged quickly, easily, and securely, and that provides a strong tight seal around the connection.
The present invention meets this need by providing a conversion adapter for connecting a fluid supply assembly to a fluid applicator. In one embodiment, the fluid applicator includes an adapter with a connector on an outer surface, the connector selected from projections and grooves. The conversion adapter comprises a first end and a second end, and a bore between the first end and the second end, the first end having a complementary connecting surface adapted to mate with a connecting surface on the fluid supply assembly, the second end having a complementary connector in the bore, the second end having a top and bottom, the complementary connector selected from complementary grooves or complementary projections, the complementary connector adapted to mate with the connector on the adapter of the fluid applicator.
In another embodiment, the fluid supply assembly includes a fitting with an opening, the fitting having an upper end and a lower end, the fitting having a connector on the upper end of an inner surface, the connector selected from projections and grooves. The conversion adapter includes an adapter having a first end and a second end, and a bore between the first end and the second end, the first end having a complementary connector on an outer surface, the first end having a top and bottom, the complementary connector selected from complementary grooves or complementary projections, the complementary connector adapted to mate with the connector on the fitting of the fluid supply assembly, the second end having a complementary connecting surface adapted to mate with a connecting surface on the fluid applicator. Another aspect of the invention is a method of connecting a fluid supply assembly to a fluid applicator.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation view of a gravity-feed paint sprayer with a fluid supply assembly.
FIG. 3 is a partial side sectional view of the assembled connection between the reusable cup holder and reusable outer lid.
FIG. 18 is a cross-sectional view of one embodiment of the conversion adapter of the present invention.
FIG. 20 is a partial assembled side sectional view of the connection between the adapter of the fluid applicator and one embodiment of the conversion adapter.
FIG. 21 is a cross-sectional view of another embodiment of the conversion adapter of the present invention.
FIG. 22 is a cut-away view of the inside of the embodiment of FIG. 21.
FIG. 23 is a side elevation view of a gravity-feed paint sprayer with a fluid supply assembly attached using the conversion adapter of the present invention.
FIG. 24 is a cross-sectional view of another embodiment of the conversion adapter of the present invention.
FIG. 25 is a side view of another embodiment of the conversion adapter of the present invention.
FIG. 26 is a side view of one embodiment of a two piece conversion adapter.
FIGS. 11-14 show one embodiment of an adapter assembly 500. The adapter assembly 500 includes adapter 505 for connecting between paint sprayer 10 and outer lid 508. Adapter 505 includes a first end 510 engagable with paint sprayer 10, shown in FIG. 1, a second end 515 engagable with outer lid 508, and a hollow bore 520 between first end 510 and second end 515.
The second end 515 can then be rotated further so that the projections 565 follow the grooves 535 which moves the second end 515 into the fitting 555 and onto the fitting 570 of the disposable lid 575. When the projections 565 reach portion 550, the second end 515 is engaged with the fitting 555. If the portion 550 is parallel to the bottom 540 of the second end 515, further rotation of the second end 515 causes the projections 565 to follow portion 550, locking the second end 515 in the fitting 555 without the second end 515 moving further into the fitting 555. The adapter's rotation will stop when it reaches the end of the portion 550. This arrangement allows the adapter to be �unscrewed� slightly without it raising off the disposable lid 575. Thus, accidental bumping of the adapter will not cause it to start disengaging the connection immediately. When the adapter is �unscrewed� to remove the cup, the presence of a portion 550 which is parallel to the bottom 540 of the second end 515 allows the adapter to be removed slowly and gradually, which reduces the likelihood of residual paint being spattered during removal.
In some paint sprayers 10, various parts, such as hooks, or knobs on the fluid applicator, will interfere with a connection made between the adapter and the fluid supply assembly. In this situation, a conversion adapter can be included between the adapter on the paint sprayer and the fluid supply assembly to provide the proper spacing.
FIGS. 18-23 show different embodiments of a conversion adapter 600. The conversion adapter 600 has a first end 605 and a second end 610 with a bore 615 between them. The first end 605 can be connected to the fluid supply assembly using a complementary connecting surface 620 which is adapted to mate with a connecting surface on the fluid supply assembly. The complementary connecting surface and connecting surface can be an arrangement of projections and grooves, as was described above for connecting the adapter and outer lid. Alternatively, it can be another type of connecting surface/complementary connecting surface, such as threaded helical connections, lugs and grooves, tapered connections, friction fit connections, bayonet connections, or snap connections.
The first end 605 can be smaller in diameter than the second end 610, if desired. The first and second ends 605, 610 can be generally cylindrical, if desired.
There are one or more complementary connectors in the bore 615 of the conversion adapter 600. In FIGS. 18-20, the complementary connectors are projections 625 which extend into the bore 615 at the top of the second end 610. The projections can be positioned at the edge of the top 630 of the second end 610, or below the edge, if desired. The projections are typically rod-shaped, but they can be any desired shape. The number of projections will correspond to the number of grooves.
The projections mate with grooves in the adapter 505. When the adapter 505 is positioned in the second end 610 of the conversion adapter 600, the adapter 505 will enter the second end 610 until it reaches projections 625. This centers the adapter 505 in the opening 635 of the conversion adapter 600. The conversion adapter 600 can be rotated until the grooves 535 in the adapter 505 align with projections 625. Alternatively, the adapter 505 could be rotated onto the conversion adapter 600.
The conversion adapter 600 can be rotated further so that the projections 625 follow the grooves which moves the adapter 505 into the conversion adapter 600. When the projections reach portion 550, the adapter 505 is engaged with the conversion adapter 600. If the portion 550 is parallel to the bottom 540 of the adapter 505, further rotation of the conversion adapter 600 causes the projections 625 to follow portion 550, locking the adapter 505 in the conversion adapter 600 without the adapter 505 moving further into the conversion adapter 600. The conversion adapter's rotation will stop when it reaches the end of portion 550. Accidental bumping of the conversion adapter will not cause it to start disengaging the connection immediately.
If the portion 550 is not parallel to the bottom 540 of the adapter 505, rotating the conversion adapter 600 will move the adapter 505 further into the conversion adapter 600.
Optionally, when the adapter 505 is almost inserted completely, the adapter 505 can have an interference fit with the conversion adapter 600. The conversion adapter 600 can be slightly smaller near the bottom 640 of the second end 610 to give the feel of a snug fit as the adapter 505 nears the locking point. The conversion adapter 600 can be smaller all around, or just some portions can be smaller.
Alternatively, the complementary connectors are grooves 645, as shown in FIGS. 21-22. In this case, the adapter would include projections 565, as shown in FIG. 17. The grooves 645 can extend down from the top 630 of the second end 610 of the conversion adapter 600. The grooves 645 can form an angle a with respect to the plane of the top 630. The portion 650 of the groove forms an angle b with respect to the plane of the groove, and could be parallel to a plane of the top 630 of the second end 610 of the conversion adapter 600. The operation would be similar to that described above.
Another embodiment of the conversion adapter 600 is shown in FIGS. 24-25. The conversion adapter 600 has a first end 605 and a second end 610 with a bore 615 between them. The second end 610 can be connected to the fluid applicator using a complementary connecting surface 660 which is adapted to mate with a connecting surface on the fluid applicator. The complementary connecting surface 660 and connecting surface can be an arrangement of projections and grooves, as was described above for connecting the adapter and outer lid. Alternatively, it can be another type of connecting surface/complementary connecting surface, such as threaded helical connections, lugs and grooves, tapered connections, friction fit connections, bayonet connections, snap connections, screws/threaded connections, or nuts and bolts connections. Depending on the type of connection, an o-ring or other type of seal could be used to provide a fluid tight seal between the conversion adapter and the fluid applicator, if desired.
There are one or more complementary connectors on the conversion adapter 600. The complementary connectors can be projections 665 which extend from the outer surface of the first end 605 of the conversion adapter 600. The projections 665 can be positioned at the edge of the top 670 of the first end 605, or below the edge, if desired. The projections are typically rod-shaped, but they can be any desired shape. The number of projections will correspond to the number of grooves.
The projections 665 mate with grooves 535 in the fitting 555 (shown in FIG. 15). When the first end 605 of the conversion adapter 600 is positioned in the fitting 555, the conversion adapter 600 can be rotated until the grooves 535 in the fitting 555 align with projections 665. Alternatively, the fitting 555 could be rotated onto the conversion adapter 600.
The conversion adapter 600 can be rotated further so that the projections 665 follow the grooves 535 which moves the conversion adapter 600 into the fitting 555. When the projections 665 reach portion 550, the conversion adapter 600 is engaged with the fitting 555. If the portion 550 is parallel to the top 670 of the conversion adapter 600, further rotation of the conversion adapter 600 causes the projections 665 to follow portion 550, locking the conversion adapter 600 in the fitting 555 without the conversion adapter 600 moving further into the fitting 555. The conversion adapter's rotation will stop when it reaches the end of portion 550. Accidental bumping of the conversion adapter 600 will not cause it to start disengaging the connection immediately.
If the portion 550 is not parallel to the top of the fitting 555, rotating the conversion adapter 600 will move the conversion adapter 600 further into the fitting 555.
Optionally, when the conversion adapter 600 is almost inserted completely, the conversion adapter 600 can have an interference fit with the fitting 555. The opening in the fitting 555 can be slightly smaller near the bottom to give the feel of a snug fit as the conversion adapter 600 nears the locking point. The fitting 555 can be smaller all around, or just some portions can be smaller.
Alternatively, the complementary connectors are grooves 675, as shown in FIG. 25. In this case, the fitting 555 would include projections 565, as shown in FIG. 12. The grooves 675 can extend down from the top 670 of the first end 605 of the conversion adapter 600. The portion 680 of the groove 675 could be parallel to a plane of the top 670 of the first end 605 of conversion adapter 600. The operation would be similar to that described above.
The conversion adapter can be a single piece, or it can be made in two or more pieces, if desired. For example, the first end can be one piece, and the second end can be a second piece. The two ends can be connected using a suitable connection, such as threaded helical connections, lugs and grooves, tapered connections, friction fit connections, bayonet connections, snap connections, screws/threaded connections, or nuts and bolts connections.
FIG. 26 shows one embodiment of a two piece conversion adapter 700. The first piece 705 includes first end 710 and second end 712, and a second piece 715 includes first end 722 and second end 720. The first piece 705 fits into the bore of an adapter on the fluid applicator (the adapter can be integral with the fluid applicator, if desired). The first piece 705 can be generally cylindrical and have thin walls. It can have knurls 725 on the outer surface.
The second piece 715 has a threaded connection 730 at first end 722 and the second end 720 at the other end. The threaded connection 730 has a smaller diameter than second end 720. Between threaded connection 730 and second end 720, there is an intermediate portion 735 which tapers outward from threaded connection 730 toward second end 720.
The first piece 705 is inserted into the bore of the fluid applicator. The knurls 725 have an interference fit with the bore of the adapter on the fluid applicator. This helps to prevent rotation in the bore. Then the second piece 715 is attached to the first piece 705. The second piece 715 can be screwed into the first piece 705 using the threaded connection 730 which mates with a threaded connection (not shown) inside the first piece 705. As the second piece 715 is screwed into the first piece 705, the tapered intermediate portion 735 causes the thin walls of the first piece to expand, locking it in place in the bore of the fluid applicator.
The second end 720 can have a complementary connector groove 740 which can be used to attach the conversion adapter 700 to the fitting on the fluid supply assembly, as described above. Alternatively, the second end 720 can have a complementary connector projection, also as described above.
A screw can be used to insert and remove the first piece 705 from the bore of the fluid applicator. The screw can be attached to the threaded connection inside the first piece 705, and the first piece 705 can be tapped into place in the bore of the fluid adapter. Then the second piece 715 can be attached. To remove the first piece 705 from the bore, the second piece 715 is removed. Then the screw can be attached to the first piece 705, and the screw with the first piece 705 attached can be pulled out of the bore.
The outlet end 425 defines an axis 440. There is a flange 445 extending outward and downward from the edge of the outlet end 425. The flange 445 extends downward at an angle αa in a range of from about 10� to about 70� from the axis 440 of the outlet end 425. The outlet end 425 is adapted to be placed into the reusable cup holder, so it is sized to fit in the reusable cup holder.
In these embodiments, the distance across the outlet end of the disposable cup is greater than the distance across the bottom in at least one direction. The smaller portion of the disposable cup can extend the entire height of the side wall or less than the entire height of the side wall. If the side wall is cylindrical, and the smaller diameter portion extends the entire height of the sidewall, it can be connected to the flange by a flat annular portion. If it does not extend the entire height of the side wall, it can be connected by a generally frustoconical upper side wall portion. Other side wall arrangements are possible, as are well known to those of skill in the art.
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