| 摘要 |
<p>The invention relates to a device which is used to cut feedthroughs into a free surface ( 11 ) of a block ( 1 ) of insulating material, such as expanded polystyrene or polyurethane. The inventive device ( 2 ) comprises: a base ( 20 ) which rests on the free surface ( 11 ) by means of a lower face ( 21 ), a handle ( 30 ) which is fixed to the base ( 20 ), and blades ( 40 ) which are solidly connected to the base ( 20 ) or handle ( 30 ) and which project out beneath the lower face ( 21 ).</p> |
