US 12,318,904 B2
Powerhead unit for tool
Shane McCue, Greenfield, WI (US); John L. Whealon, West Bend, WI (US); and Kyle D. Korn, Wauwatosa, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Apr. 1, 2024, as Appl. No. 18/623,230.
Application 17/977,316 is a division of application No. 16/417,713, filed on May 21, 2019, granted, now 11,485,003, issued on Nov. 1, 2022.
Application 18/623,230 is a continuation of application No. 17/977,316, filed on Oct. 31, 2022, granted, now 11,945,090.
Claims priority of provisional application 62/675,661, filed on May 23, 2018.
Prior Publication US 2024/0246216 A1, Jul. 25, 2024
Int. Cl. A01G 3/053 (2006.01); A01D 34/416 (2006.01); A01G 3/08 (2006.01); B25F 3/00 (2006.01); B25F 5/02 (2006.01)
CPC B25F 3/00 (2013.01) [B25F 5/02 (2013.01); A01D 34/416 (2013.01); A01G 3/053 (2013.01); A01G 3/086 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An outdoor tool comprising:
a powerhead unit including
a motor,
a housing assembly housing the motor and including a handle portion,
a first shaft segment supported within the housing assembly and extending along a shaft axis to a first connecting portion,
a first driveshaft segment coupled to the motor and extending within the first shaft segment,
a switch supported within the handle portion and operable to activate the motor, and
a trigger assembly including
a trigger configured to selectively actuate the switch,
a first lock-off member movable between a first position preventing the trigger from actuating the switch, and a second position permitting the trigger to actuate the switch, and
a second lock-off member movable between a locked position preventing the first lock-off member from moving to the second position, and an unlocked position permitting the first lock-off member to move to the second position; 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.