Screwdriver tool
AssigneeWiha Werkzeuge GmbH
InventorOtmar Karle
Life of this patent
Estimating the term…
Abstract
A screwdriver tool has a driving body and a tool shank mounted in the driving body so it can rotate about its axis. A device for transmitting a torque from the driving body to the tool shank interrupts the torque transmission if a predefined limiting torque is exceeded. In its longitudinal area accommodated in the driving body, the tool shaft has a clutch section featuring a non-circular cross section. At least one spring element adjoins the clutch section radially on the outside. The spring element is mounted in the driving body in a non-rotatable manner with respect to the axis of the tool shank and in a radially deflectable manner against its spring force.
Claims21
A screwdriver tool comprising:
- a driving body;
- a tool shank accommodated in the driving body so it can rotate about its axis;
- and a device for transmitting a torque from the driving body to the tool shank which interrupts the torque transmission when a predefined limiting torque is exceeded, wherein:
- the tool shank includes a clutch section having a non-circular cross section in a longitudinal area accommodated in the driving body;
- at least one spring element adjoins the clutch section radially outside;
- and the spring element is mounted in the driving body in a non-rotatable manner with respect to the axis of the tool shank and in a radially deflectable manner, with respect to the axis of the tool shank, against its spring force.
A screwdriver tool comprising:
- a driving body;
- a tool shank including a clutch section having a non-circular cross disposed within in the driving body;
- and
- at least one spring element disposed within the driving body and circumferentially disposed about the clutch section of the tool shank, wherein applying a torque below a predetermined level causes the clutch section to radially deflect the spring element with respect to the axis of the tool shank to rotatably engage the tool shank and the driving body and wherein applying a torque above the predetermined level causes the clutch section to disengage from the spring element allowing the driving body to freely rotate about the tool shank.
Dependencies are inferred from the claim text.