Electric motor operated hand circular saw
First Claim
1. An electric motor operated hand circular saw, comprising a base plate;
- a motor housing turnable relative to said base plate;
an electric motor accommodated in said motor housing and having a drive shaft;
a circular saw blade arranged on said drive shaft of said electric motor; and
a pre-slitting abutment for adjusting a pre-slitting position of said saw blade in which said saw blade penetrates into a surface of a workpiece to be sawed by a limited pre-slitting depth, said pre-slitting abutment having two fixed abutment positions in which two different turning positions of said motor housing relative to said base plate are adjusted, so that in a first of said abutment positions during guiding said base plate over a guiding rail on a workpiece surface and in a second of said abutment positions during guiding said base plate along a strip clamped on the workpiece surface or with a parallel abutment held on said base plate on the workpiece edge on the workpiece surface, said saw blade penetrates correspondingly into the workpiece surface with a pre-slitting depth, said pre-slitting abutment has a cutting depth ruler mounted on said base plate and provided with a guiding slot extending over a turning region of said motor housing, and a clamping element fixed on said motor housing so that said clamping element extends through said guiding slot and is clampable on said cutting depth ruler, said clamping element having two abutment projections formed so that a first one of said abutment projections in said first abutment position of said pre-slitting abutment and a second one of said abutment projections in said second abutment position of said pre-slitting abutment abuts correspondingly against an end of said guiding slot which faces away from said base plate, and said first abutment projection is liftable from said guiding slot.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric motor operated hand circular saw has a base plate, a motor housing turnable relative to the base plate, an electric motor accommodated in the motor housing and having a drive shaft, a circular saw blade arranged on the drive shaft of the electric motor, and a pre-slitting abutment for adjusting a pre-slitting position of the saw blade in which the saw blade penetrates into a surface of a workpiece to be sawed by a limited pre-slitting depth. The pre-slitting abutment has two fixed abutment positions in which two different turning positions of the motor housing relative to the base plate are adjusted, so that in a first of the abutment positions during guiding the base plate over a guiding rail on a workpiece surface and in a second of the abutment positions during guiding the base plate along a strip clamped on the workpiece surface or with a parallel abutment held on the base plate on the workpiece edge on the workpiece surface, the saw blade penetrates correspondingly into the workpiece surface with a pro-slitting depth.
44 Citations
13 Claims
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1. An electric motor operated hand circular saw, comprising a base plate;
- a motor housing turnable relative to said base plate;
an electric motor accommodated in said motor housing and having a drive shaft;
a circular saw blade arranged on said drive shaft of said electric motor; and
a pre-slitting abutment for adjusting a pre-slitting position of said saw blade in which said saw blade penetrates into a surface of a workpiece to be sawed by a limited pre-slitting depth, said pre-slitting abutment having two fixed abutment positions in which two different turning positions of said motor housing relative to said base plate are adjusted, so that in a first of said abutment positions during guiding said base plate over a guiding rail on a workpiece surface and in a second of said abutment positions during guiding said base plate along a strip clamped on the workpiece surface or with a parallel abutment held on said base plate on the workpiece edge on the workpiece surface, said saw blade penetrates correspondingly into the workpiece surface with a pre-slitting depth, said pre-slitting abutment has a cutting depth ruler mounted on said base plate and provided with a guiding slot extending over a turning region of said motor housing, and a clamping element fixed on said motor housing so that said clamping element extends through said guiding slot and is clampable on said cutting depth ruler, said clamping element having two abutment projections formed so that a first one of said abutment projections in said first abutment position of said pre-slitting abutment and a second one of said abutment projections in said second abutment position of said pre-slitting abutment abuts correspondingly against an end of said guiding slot which faces away from said base plate, and said first abutment projection is liftable from said guiding slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 13)
- a motor housing turnable relative to said base plate;
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8. An electric motor operated hand circular saw, comprising a base plate;
- a motor housing turnable relative to said base plate;
an electric motor accommodated in said motor housing and having a drive shaft;
a circular saw blade arranged on said drive shaft of said electric motor;
a pre-slitting abutment for adjusting a pre-slitting position of said saw blade in which said saw blade penetrates into a surface of a workpiece to be sawed by a limited pre-slitting depth, said pre-slitting abutment having two fixed abutment positions in which two different turning positions of said motor housing relative to said base plate are adjusted, so that in a first of said abutment positions during guiding said base plate over a guiding rail on a workpiece surface and in a second of said abutment positions during guiding said base plate along a strip clamped on the workpiece surface or with a parallel abutment held on said base plate on the workpiece edge on the workpiece surface, said saw blade penetrates correspondingly into the workpiece surface with a pre-slitting depth, said pre-slitting abutment having a cutting depth ruler mounted on said base plate and provided with a guiding slot extending over a turning region of said motor housing, and a clamping element fixed on said motor housing so that said clamping element extends through said guiding slot and is clampable on said cutting depth ruler; and
a scale arranged along said guiding slot of said cutting depth ruler for a cutting depth adjustment of said saw blade, said clamping element having a beam provided with an adjusting mark cooperating with said scale. - View Dependent Claims (9)
- a motor housing turnable relative to said base plate;
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10. An electric motor operated hand circular saw, comprising a base plate;
- a motor housing turnable relative to said base plate;
an electric motor accommodated in said motor housing and having a drive shaft;
a circular saw blade arranged on said drive shaft of said electric motor; and
a pre-slitting abutment for adjusting a pre-slitting position of said saw blade in which said saw blade penetrates into a surface of a workpiece to be sawed by a limited minimum pre-slitting depth, said pre-slitting abutment having two abutment projections each defining a fixed abutment positions in which two fixed different turning positions of said motor housing relative to said base plate are adjusted, so that in a first of said abutment positions during guiding said base plate over a guiding rail on a workpiece surface and in a second of said abutment positions during guiding said base plate along a strip clamped on the workpiece surface or with a parallel abutment held on said base plate on the workpiece edge on the workpiece surface, said saw blade penetrates correspondingly into the workpiece surface with a pre-slitting depth.
- a motor housing turnable relative to said base plate;
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11. An electric motor operated hand circular saw, comprising a base plate;
- a motor housing turnable relative to said base plate;
an electric motor accommodated in said motor housing and having a drive shaft;
a circular saw blade arranged on said drive shaft of said electric motor; and
a pre-slitting abutment for adjusting a pre-slitting position of said saw blade in which said saw blade penetrates into a surface of a workpiece to be sawed by a limited pre-slitting depth, said pre-slitting abutment having two abutment projections which define two fixed abutment positions in which two different turning positions of said motor housing relative to said base plate are adjusted, so that in a first of said abutment positions during guiding said base plate over a guiding rail on a workpiece surface and in a second of said abutment positions during guiding said base plate along a strip clamped on the workpiece surface or with a parallel abutment held on said base plate on the workpiece edge on the workpiece surface, said saw blade penetrates correspondingly into the workpiece surface with a pre-slitting depth.
- a motor housing turnable relative to said base plate;
Specification