Dust extractor

Patent metadata

Field	Value
Publication number	US-9138845-B2
Application number	US-201213344117-A
Country	US
Kind code	B2
Filing date	Jan 5, 2012
Priority date	Jan 6, 2011
Publication date	Sep 22, 2015
Grant date	Sep 22, 2015

Abstract

A suction cup dust extractor for a drill including a housing; a drill collar having a drill passage formed through it; a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; an aperture located on the housing through which air can pass; at least one first air passage formed within the housing which connects to the aperture; and at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; the collar being releasably attachable to the housing, the at least one first air passage making fluid connection with the drill passage when it is attached to the housing to enable air to pass from the drill passage to the aperture.

First claim

The invention claimed is:

1. A suction cup dust extractor for a drill comprising:
a housing;
a drill collar having a drill passage formed therethrough;
a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber that holds the housing against the work piece via suction;
an aperture located on the housing through which air can pass;
at least one first air passage formed within the housing which connects to the aperture; and
at least one second air passage formed within the housing which enables air to pass from the recess to the aperture;
wherein the collar is releasably attachable to the housing, the at least one first air passage making fluid connection with the drill passage when it is attached to the housing to enable air to pass from the drill passage to the aperture.

2. A suction cup dust extractor as claimed in claim 1 , wherein the collar is releasably attached to the housing using a locking mechanism comprising a first part mounted on the collar and a second part mounted on the housing, with one of the first part and the second part comprising an exit tube which slidingly engages with a socket formed on the other of the first pa rt and the second part, the exit tube providing a fluid connection between the drill passage and the first air passage.

3. A suction cup dust extractor as claimed in claim 2 , wherein one of the first part and the second part comprises a groove, and the other of the first part and the second part comprises a ribwhich slidingly engages with the groove.

4. A suction cup dust extractor as claimed in claim 2 , wherein the shape of the exit tube and socket are non circular to prevent rotation of the exit tube within the socket.

5. A suction cup dust extractor as claimed in claim 2 , wherein the exit tube is mounted on the collar and the socket is formed by the end the first passage, the exit tube slidingly engaging with the socket in a direction either perpendicular to or parallel to the longitudinal axis of the exit tube.

6. A suction cup dust extractor as claimed in claim 2 , wherein the collar is releasably attached to housing using a latching mechanism comprising a first part mounted on the collar and a second part mounted on the housing, with one of the first part and the second part comprising a latch, and the other of the first part and the second part comprising a catch which is capable of engaging with the latch to lock the collar to the housing.

7. A suction cup dust extractor as claimed in claim 6 , wherein one or more of the catch or latch is moveable.

8. A suction cup dust extractor as claimed in claim 7 , wherein the catch is movable, and the moveable catch is connected to a slideable button, the sliding movement of the button moving the catch into or out of engagement with the latch.

9. A suction cup dust extractor as claimed in claim 6 , wherein there is provided a moveable locking pin which is capable of moving latch into or out of engagement with the catch.

10. A suction cup dust extractor as claimed in claim 6 , wherein the latch comprises a resilient arm mounted at one end to the collar, with a chamfer formed at the other free end, the latch comprising an aperture formed within the housing.

11. A suction cup dust extractor as claimed in claim 1 , wherein the chamber is spaced from the drill collar relative to the work piece when the collar is attached to the housing and the dust extractor is located against the work piece.

12. A suction cup dust extractor for a drill comprising:
a housing;
a drill collar having a drill passage formed therethrough;
a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber;
an aperture located on the housing through which air can pass;
at least one first air passage formed within the housing which connects to the aperture; and
at least one second air passage formed within the housing which enables air to pass from the recess to the aperture;
wherein the collar is releasably attachable to the housing, the at least one first air passage making fluid connection with the drill passage when it is attached to the housing to enable air to pass from the drill passage to the aperture;
wherein the collar is releasably attached to the housing using a locking mechanism comprising a first part mounted on the collar and a second part mounted on the housing, with one of the first pa rt and the second part comprising an exit tube which slidingly engages with a socket formed on the other of the first part and the second part, the exit tube providing a fluid connection between the drill passage and the first air passage; and
wherein the exit tube is mounted on the collar and the socket is formed by the end the first passage, the exit tube slidingly engaging with the socket.

13. A drill collar for a suction cup dust extractor for a drill comprising:
wherein the dust extractor comprises:
a housing;
a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber that holds the housing against the work piece via suction;
an aperture located on the housing through which air can pass;
at least one first air passage formed within the housing which connects to the aperture;
at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; and
a socket;

the drill collar comprising:
a drill passage; and
an exit tube which is in fluid connection to the drill passage and which is capable of releasably connecting to the socket of a suction cup dust extractor to provide a fluid connection between the drill passage and a first air passage of a suction cup dust extractor.

14. A drill collar as claimed in claim 13 , wherein the exit tube comprises a rib capable of engaging a groove in a socket of a suction cup dust extractor.

15. A drill collar as claimed in claims 13 , wherein the shape of the exit tube is non circular in cross section.

16. A drill collar as claimed in claim 13 , wherein there is further provided a resilient arm mounted at one end to the exit tube, with a chamfer formed at the other free end.

17. A suction cup dust extractor as claimed in claim 13 , wherein the chamber is spaced from the drill collar relative to the work piece when the collar is attached to the housing and the dust extractor is located against the work piece.

Assignees

• Hahn Norbert
• Black & Decker Inc

Inventors

• Hahn Norbert

Classifications

• Y10T408/96

  Miscellaneous · CPC title

• Y10T408/554

  Magnetic or suction means · CPC title

• A47L9/02

  Nozzles (suction nozzles for fluid transport B65G51/00) · CPC title

• A47L7/0095

  Suction cleaners or attachments adapted to collect dust or waste from power tools · CPC title

• B23Q11/0046 Primary

  by sucking · CPC title