Device for driving a drilling and/or impacting tool
AssigneeSkil Corporation
InventorsWilhelmus J. M. Hendrikx, Antonie J. Moolenaar, Jan P. Houben
Life of this patent
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Abstract
A device for driving a drilling and/or impacting tool including a shaft journalled in a housing so as to be rotatable, if necessary. One end of the shaft is connectable with the tool whereas the other end is accessible for an oscillatory impact body movable in the housing by a guide, a rotatable driving shaft setting and a transmission. The transmission includes a device for converting the rotary movement of the driving shaft into an oscillatory movement of a driving element which is connected through an elastic member with the impact body.
Claims14
A device for driving a drilling and/or impacting tool comprising:
- a tool shaft journalled in a housing so as to be rotatable, if necessary, one end of said shaft being connectable with the tool whereas the other end is accessible for engagement with an oscillatory impact body movable in the housing by means of a guide and a rotatable driving shaft operatively connected through a transmission for impacting rotation to the tool shaft and/or movement to the impact body against the tool shaft, characterized in that the transmission comprises means for converting the rotary movement of the driving shaft into an oscillatory movement of a driving element, which is connected through an elastic member with the impact body, said elastic member has a non-linear spring characteristic.
A device for driving a drilling and/or impacting tool comprising:
- a housing;
- a shaft journalled in said housing for rotation and for reciprocation, said shaft having a first end projecting from said housing and a second end being disposed within said housing;
- an oscillatory impact body being operatively disposed within said housing adjacent to said second end of said shaft;
- a guide for guiding the movement of said oscillatory impact body;
- a rotatable driving means for imparting rotation to said shaft;
- transmission means for converting rotation of the rotatable driving means into an oscillatory movement;
- and
- an elastic member having a non-linear spring characteristic connected to said housing for restraining said impact body during oscillation, said elastic member includes a leaf spring selectively engageable with an arm for controlling the spring character of said leaf spring.
Dependencies are inferred from the claim text.