Oscillating Mechanism for a Power Tool
First Claim
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1. A power tool comprising:
- a drive motor having an eccentric drive shaft;
a tool holder adapted to support a working tool for oscillating rotational motion; and
an oscillating mechanism disposed between said eccentric drive shaft and said tool holder, said oscillating mechanism including;
a link mounted on said eccentric drive shaft for eccentric movement upon rotation of said drive shaft; and
an elongated drive arm having;
a first end coupled to said link in a manner to isolate relative rotation and translation between said link and said drive arm while still imparting an oscillatory motion in one direction to said drive arm; and
a second end engaged to said tool holder to transfer the oscillatory motion to oscillating rotational motion of said tool holder.
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Accused Products
Abstract
An oscillating power tool includes a drive motor (M) producing rotary motion and an oscillating mechanism (30) for converting the motor rotary motion to an oscillatory side-to-side movement. The oscillating mechanism (30) includes a link (32) driven by an eccentric shaft (16) of the motor (M), a drive arm (40) that drives the hub (45) of the working tool (B) in oscillating motion, and a bearing arrangement (37) between the drive arm (40) and the link (32) that isolates relative rotation and translation between the components while still imparting an oscillatory motion to the drive arm (40).
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Citations
20 Claims
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1. A power tool comprising:
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a drive motor having an eccentric drive shaft; a tool holder adapted to support a working tool for oscillating rotational motion; and an oscillating mechanism disposed between said eccentric drive shaft and said tool holder, said oscillating mechanism including; a link mounted on said eccentric drive shaft for eccentric movement upon rotation of said drive shaft; and an elongated drive arm having; a first end coupled to said link in a manner to isolate relative rotation and translation between said link and said drive arm while still imparting an oscillatory motion in one direction to said drive arm; and a second end engaged to said tool holder to transfer the oscillatory motion to oscillating rotational motion of said tool holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An oscillating mechanism for a power tool, the oscillating mechanism engaged between an eccentric drive shaft of the power tool and a tool holder adapted to support a working tool for oscillating rotational motion, the oscillating mechanism comprising:
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a link mountable on the eccentric drive shaft for eccentric movement upon rotation of the drive shaft; and an elongated drive arm having; a first end coupled to said link in a manner to isolate relative rotation and translation between said link and said drive arm while still imparting an oscillatory motion in one direction to said drive arm; and a second end engageable to the tool holder to transfer the oscillatory motion to oscillating rotational motion of said tool holder. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A power tool comprising:
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a drive motor having an eccentric drive shaft; a tool holder adapted to support a working tool for oscillating rotational motion; and an oscillating mechanism disposed between said eccentric drive shaft and said tool holder, said oscillating mechanism including; a link mounted on said eccentric drive shaft for eccentric movement upon rotation of said drive shaft; and an elongated drive arm having; a first end coupled to said link in a manner to isolate relative rotation between said link and said drive arm while still imparting an oscillatory motion in one direction to said drive arm; and a second end engaged to said tool holder to transfer the oscillatory motion to oscillating rotational motion of said tool holder. - View Dependent Claims (19)
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20. (canceled)
Specification