Patent ID: 11945090
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 15:
16. An outdoor tool comprising:
a powerhead unit including
a motor,
a first shaft segment having a first driveshaft segment coupled to the motor, and
a first connecting portion attached to the first shaft segment; and

an attachment unit selectively couplable to and powered by the powerhead unit, the attachment unit including
an operational unit configured to be driven by the motor,
a second shaft segment having a second driveshaft segment operatively coupled to the operational unit, and
a second connecting portion attached to the second shaft segment, the second connecting portion configured for coupling to the first connecting portion, wherein
one of the first driveshaft segment and the second driveshaft segment defines a female connection member, and another of the first driveshaft segment and the second driveshaft segment defines a male connection member configured for receipt by the female connection member,
one of the first connecting portion and the second connecting portion defines an envelope with the female connection member positioned therein and includes a bearing that rotatably supports the female connection member, wherein an elastomeric member is interposed between the bearing and the envelope,
the envelope defines an axial opening having a keyway, wherein another of the first connecting portion and the second connecting portion includes a key, and wherein when the attachment unit is attached to the powerhead unit, the keyway receives the key to prevent relative rotation between the first shaft segment and the second shaft segment, and
the another of the first connecting portion and the second connecting portion includes a sleeve removably coupled to one of the first shaft segment and the second shaft segment, the sleeve defining the key.