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US 2010/0058909 A1Published application
Power tool
OwnerShaodong Cheninventor
Life of this patent
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Abstract
The present invention relates to a miter saw which includes a turntable, an elongate coupling mechanism pivotally mounted with respect to the turntable about a bevel axis to adjust to a bevel angle and a saw unit pivotally connected to the elongate coupling mechanism for movement between a non-cutting position and a cutting position. An angle enlarging mechanism is disposed between the turntable and the elongate coupling mechanism which is used for conveniently reading the bevel angle.
Claims21
A power tool comprising:
- a cutting table for supporting a cuttable workpiece, wherein the cutting table is in a working plane;
- a cutting unit including a cutting tool, wherein the cutting unit is rotational about a bevel axis whereby to adjust the cutting tool from a first plane relative to the working plane defining a first bevel angle to a second plane relative to the working plane defining a second bevel angle, wherein the cutting unit is pivotal from an elevated non-cutting position remote from the cutting table to a non-elevated cutting position at or near to the cutting table and from the non-elevated cutting position at or near to the cutting table to the elevated non-cutting position remote from the cutting table;
- an elongate coupling assembly operatively coupling the cutting unit to the cutting table which is adapted to rotate the cutting unit about the bevel axis to adjust the cutting tool from the first plane to the second plane and to pivot the cutting unit from the elevated non-cutting position to the non-elevated cutting position;
- a stationary member fixed to the cutting table;
- a tiltable member fixed to the elongate cutting assembly so as to be pivotal relative to the stationary member in response to the rotation of the cutting unit about the bevel axis;
- and
- an angle enlarging mechanism disposed between the stationary member and the tiltable member, wherein the angle enlarging mechanism includes:
- a fixed gear fixed to one of the stationary member and the tiltable member;
- a transmission assembly disposed on the other of the stationary member and the tiltable member;
- a rotary gear having internal teeth, wherein the rotary gear is movably supported on the one or the other of the stationary member and the tiltable member, wherein the transmission assembly includes a first gear for meshing with the fixed gear and a second gear for meshing with the internal teeth of the rotary gear;
- and
- an indicator assembly including an indicator for indicating the bevel angle disposed immovably on one of the rotary gear and the stationary member.
9 more elements
A power tool comprising:
- a stationary member;
- a tiltable member pivotally mounted on the stationary member about a horizontal axis;
- an angle enlarging mechanism disposed between the stationary member and the tiltable member, the angle enlarging mechanism comprising:
- a fixed gear fixedly disposed on one of the stationary member and the tiltable member;
- a transmission assembly disposed on the other of the stationary member and the tiltable member;
- a rotatable gear having internal teeth, the rotatable gear movably supported on one of the stationary member and the tiltable member;
- wherein the transmission assembly includes a first gear for meshing with the fixed gear and a second gear for meshing with the internal teeth of the rotary gear;
- and
- an indicator assembly comprising an indicator disposed immovably with one of the rotatable gear and the stationary member.
6 more elements
Dependencies are inferred from the claim text.