Collar system for a dust extractor

Abstract

A collar system for a dust extractor is provided including: a collar including a drill passage extending through the collar and an extension forming an internal passage that connects at one end with the drill passage, the extension being attachable to a housing of the dust extractor to enable the internal passage to connect to a suction passage of the dust extractor; and a cover mounted adjacent an entrance of the drill passage, the cover being moveable between a first position where it covers the entrance and a second position where is remote from the entrance, wherein the cover comprises at least hole that passes through the cover.

1 . A suction cup dust extractor for a drill comprising:
 a housing;   a drill collar system attached to the housing, the drill collar system including: a collar including a drill passage extending through the collar and an extension forming an internal passage that connects at one end with the drill passage, the extension being attachable to a housing of the dust extractor to enable the internal passage to connect to a suction passage of the dust extractor; and a cover mounted adjacent an entrance of the drill passage, the cover being moveable between a first position where it covers the entrance and a second position where is remote from the entrance, wherein the cover comprises at least hole that passes through the cover;   a suction chamber formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber;   at least one aperture located on the housing through which air can pass;   at least one first air passage formed by the walls of the housing that connects between the internal passage of the collar and the at least one aperture to enable air to pass from the internal passage to the at least one aperture; and   at least one second air passage formed within the housing that connects between the suction chamber and the at least one single aperture to enable air to pass from the suction chamber to the at least one aperture.   
     
     
         2 . The suction cup dust extractor of  claim 1 , wherein the hole in a lengthwise direction is frusto-conical in shape. 
     
     
         3 . The suction cup dust extractor of  claim 1 , wherein the cover comprises:
 a rigid outer ring sized to reset on the collar in the first position; and   a resiliently deformable washer mounted inside of the outer ring.   
     
     
         4 . The suction cup dust extractor of  claim 3 , wherein the resiliently deformable washer has an inner section through which the hole extends and an outer section that surrounds the inner section and connects between the outer ring and the inner section. 
     
     
         5 . The suction cup dust extractor of  claim 4 , wherein a thickness of the inner section is approximately the same as that of the outer ring. 
     
     
         6 . The suction cup dust extractor of  claim 4 , wherein a thickness of the outer section is less than that of the inner section. 
     
     
         7 . The suction cup dust extractor of  claim 4 , wherein the washer comprises plurality of radial ribs formed on the surface of the outer section extending from the inner section radially outwardly to the outer ring. 
     
     
         8 . The suction cup dust extractor of  claim 4 , wherein the inner section comprises a conical funnel attached to one side of the inner section which extends the length of the hole. 
     
     
         9 . The suction cup dust extractor of  claim 1 , wherein the cover pivots between its first position and its second position. 
     
     
         10 . The suction cup dust extractor of  claim 1 , wherein the collar comprises a circular brush located adjacent the entrance of the drill passage which extends radially inwardly. 
     
     
         11 . A dust extractor for a drill comprising:
 a housing having an engagement region for attaching to at least part of the housing of a drill;   a drill collar system attached to the housing, the drill collar system including: a collar including a drill passage extending through the collar and an extension forming an internal passage that connects at one end with the drill passage, the extension being attachable to a housing of the dust extractor to enable the internal passage to connect to a suction passage of the dust extractor; and a cover mounted adjacent an entrance of the drill passage, the cover being moveable between a first position where it covers the entrance and a second position where is remote from the entrance, wherein the cover comprises at least hole that passes through the cover; and   at least one air passage formed by the walls of the housing that connects between the internal passage of the collar and a vacuum source to enable air to pass from the internal passage to the vacuum source.   
     
     
         12 . The dust extractor of  claim 11 , wherein the vacuum source comprises a rotating fan mounted within the housing. 
     
     
         13 . The dust extractor of  claim 11 , wherein collar is connected to the housing using a telescopic arm, the collar being mounted on one end of the arm, the other end of the arm being connected to the housing. 
     
     
         14 . The dust extractor of  claim 11 , comprising a dust collection box having a filter mounted on the housing, the at least one air passage passing through the dust collection box. 
     
     
         15 . The dust extractor of  claim 11 , wherein the hole in a lengthwise direction is frusto-conical in shape. 
     
     
         16 . The dust extractor of  claim 11 , wherein the cover comprises:
 a rigid outer ring sized to reset on the collar in the first position; and   a resiliently deformable washer mounted inside of the outer ring.   
     
     
         17 . The dust extractor of  claim 16 , wherein the resiliently deformable washer has an inner section through which the hole extends and an outer section that surrounds the inner section and connects between the outer ring and the inner section. 
     
     
         18 . The dust extractor of  claim 17 , wherein a thickness of the inner section is approximately the same as that of the outer ring, and a thickness of the outer section is less than that of the inner section. 
     
     
         19 . The dust extractor of  claim 11 , wherein the cover pivots between its first position and its second position. 
     
     
         20 . The dust extractor of  claim 11 , wherein the collar comprises a circular brush located adjacent the entrance of the drill passage which extends radially inwardly.