Back to results
US 6,199,644 B1Granted
Drilling tool with a suction device
AssigneeHilti Aktiengesellschaft
InventorsThomas Thanner, Peter Roth, Peter Niedermann
Life of this patent
Estimating the term…
Abstract
A drilling tool, including a housing (1), a suction device (14), and at least one gas spring (2) cooperating with both the housing (1) and the suction device (14) and an operational direction of which is parallel to a drilling direction, with the housing (1) having bore (15) for receiving a piston rod (22) and at least a section of cylinder (21) of the at least one gas spring (2).
Claims9
A drilling tool for forming bores in constructional components formed of concrete stone and similar materials, comprising a housing (1);
- a drill (13) projecting from the housing (1);
- a suction device (14) surrounding a free end region of the drill (13);
- and at least one gas spring (2) connecting the housing (1) and the suction device (14) and an operational direction of which is parallel to the drilling direction, the housing (1) having at least one bore (15) for receiving a piston rod (22) and at least a section of a cylinder (21) of the at least one gas spring (2).
Dependencies are inferred from the claim text.