Back to results
US 6,658,977 B2Granted
Locking mechanism for inclination adjustment of a blade of a cutting device
OwnerLee-Cheng Changinventor
Life of this patent
Estimating the term…
Abstract
A cutting device includes a base, a swivel seat rotatably mounted on the base and having a first end and a second end, and a blade holder releasably engaged with the second end of the swivel seat. A blade is rotatably held by the blade holder. The blade holder is pivotable relative to the swivel seat for cutting when the blade holder is engaged with the second end of the swivel seat. An inclination of the blade relative to the swivel seat is adjustable when the blade holder is disengaged from the second end of the swivel seat. An operative rod is mounted to the first end of the swivel seat and operably connected to the blade holder for controlling releasable engagement between the blade holder and the swivel seat.
Claims15
A cutting device comprising:
- a base;
- a swivel seat rotatably mounted on the base and having a first end and a second end;
- a blade holder releasably engaged with the second end of the swivel seat, with the blade holder adapted to rotatably hold a blade, with the blade holder being pivotable about a first axis relative to the swivel seat for cutting when the blade holder is engaged with the second end of the swivel seat, with the blade holder being pivotable about a second axis relative to the swivel seat for adjusting an inclination of the blade holder relative to the swivel seat, with the first axis being perpendicular to the second axis;
- an operative rod rotatably mounted to the first end of the swivel seat, the operative rod being operably connected to the blade holder for controlling releasable engagement between the blade holder and the swivel seat by the rotation of the operative rod to allow adjustment of the inclination of the blade holder;
- and
- means for controlling releasable engagement between the swivel seat and the base, wherein said means for controlling releasable engagement between the swivel seat and the base comprises a resilient positioning plate including a first end secured to the swivel seat and a second end for manual operation, the resilient positioning plate further comprising a protrusion, the base comprising a plurality of positioning notches, the protrusion of the resilient positioning plate being releasably engaged with one of the positioning notches of the base.
3 more elements
A cutting device comprising:
- a base;
- a swivel seat rotatably mounted on the base and having a first end and a second end;
- a blade holder releasably engaged with the second end of the swivel seat, with the blade bolder adapted to rotatably hold a blade, with the blade holder being pivotable about a first axis relative to the swivel seat for cutting when the blade holder is engaged with the second end of the swivel seat, with the blade holder being pivotable about a second axis relative to the swivel seat for adjusting an inclination of the blade holder relative to the swivel seat, with the first axis being perpendicular to the second axis;
- and
- an operative rod rotatably mounted to the first end of the swivel seat, the operative rod being operably connected to the blade holder for controlling releasable engagement between the blade holder and the swivel seat by the rotation of the operative rod to allow adjustment of the inclination of the blade holder, with the blade holder being pivotably mounted to the swivel seat by a locking member, wherein the operative rod extends from the first end of the swivel seat through the second end of the swivel seat and through the locking member, the operative rod comprising a first end and a second end that is outside the second end of the swivel seat, a pressing member being securely mounted to the second end of the operative rod to move therewith;
- the operative rod and the swivel seat being so arranged that rotation of the operative rod causes longitudinal movement of the operative rod and the pressing member along a longitudinal axis of the operative rod;
- wherein the pressing member is moved to a first position pressing the locking member against the second end of the swivel seat when the operative rod is turned in a first direction, thereby preventing adjustment in the inclination angle of the blade;
- and
- wherein the pressing member is moved to a second position not pressing the locking member against the second end of the swivel seat when the operative rod is turned in a second direction opposite to the first direction, thereby allowing rotational movement of the locking member and the blade holder relative to the swivel seat for proceeding with adjustment in the inclination angle of the blade.
6 more elements
Dependencies are inferred from the claim text.