Suction-extraction device for a demolition hammer

Abstract

Suction-extraction device for a demolition hammer, wherein the demolition hammer has a housing and a tool fitting for receiving a demolition chisel, wherein the suction-extraction device has a flexible suction hose on whose free end there is connected a suction body via which dust is to be sucked up from a working region of the demolition chisel, wherein the suction-extraction device has a fastening element by which the suction hose can be mounted on the housing of the demolition hammer at a fastening point of the suction hose that is spaced apart from the free end, with the result that, during suction operation, the suction body can be freely pivoted with respect to the demolition chisel, at least in the radial direction.

1 - 12 . (canceled) 
     
     
         13 . A suction-extraction device for a demolition hammer having a housing and a tool fitting for receiving a demolition chisel, the suction-extraction device comprising:
 a flexible suction hose;   a suction body connected to a free end of the suction hose and for sucking up dust from a working region of the demolition chisel; and   a fastener, the suction hose mountable on the housing of the demolition hammer at a fastening point of the suction hose via the fastener, the fastening point of the suction hose being spaced apart from the free end so that, during suction operation, the suction body is pivotable with respect to the demolition chisel.   
     
     
         14 . The suction-extraction device as recited in  claim 13  wherein the suction body is pivotable in a radial direction. 
     
     
         15 . The suction-extraction device as recited in  claim 13  wherein the fastening element is in the form of a retaining clip. 
     
     
         16 . The suction-extraction device as recited in  claim 15  wherein the retaining clip has an eye designed to clamp around the suction hose 
     
     
         17 . The suction-extraction device as recited in  claim 16  wherein the eye clamps around the suction hose completely. 
     
     
         18 . The suction-extraction device as recited in  claim 16  wherein a diameter of the eye is widenable by a manual actuation so that the eye is displaceable along a length of the suction hose. 
     
     
         19 . The suction-extraction device as recited in  claim 15  wherein the retaining clip has two holding arms designed to engage in two mounting openings in the housing of the demolition hammer. 
     
     
         20 . The suction-extraction device as recited in  claim 13  wherein the suction body has a suction dome. 
     
     
         21 . The suction-extraction device as recited in  claim 20  wherein the suction dome has a suction slot extending in an axial direction along the suction dome. 
     
     
         22 . The suction-extraction device as recited in  claim 21  wherein the suction slot opens into a suction channel situated in an interior of the suction dome. 
     
     
         23 . The suction-extraction device as recited in  claim 20  wherein the suction dome has a plurality of suction slots arranged uniformly spaced apart from one another along a circumferential direction of the suction dome, wherein each of the suction slots opens into a respective suction channel. 
     
     
         24 . The suction-extraction device as recited in  claim 20  wherein the suction body has a carrier piece, the suction hose fastenable on one side to the carrier piece and to the suction dome on the other side. 
     
     
         25 . The suction-extraction device as recited in  claim 13  wherein, during the intended suction operation, the suction body does not enclose the demolition chisel. 
     
     
         26 . A method for operating the suction-extraction device as recited in  claim 13  comprising using the suction-extraction device to suck up dust from the working region of the demolition chisel received in the tool fitting of the demolition hammer.