Auxiliary handle for a power tool
AssigneeIngersoll-Rand Industrial U.S., Inc.
InventorsEdward C. Eardley, Timothy R. Cooper, Ryan S. Amend
Life of this patent
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Abstract
A power tool comprises an adjustable auxiliary handle assembly that facilities safe use of the tool by the operator when handling heavy duty handheld machinery. The adjustable auxiliary handle assembly comprises a strap, a handle base, an over-center linkage assembly, a locking lever, a locking lever and an adjustable knob. The strap is easily released and able to rotate and be locked in a different position convenient and comfortable to the operator. The auxiliary handle assembly is adjustable and can be operated with one hand (e.g., one-handed operation). The over-center linkage assembly holds the auxiliary handle position in place while allowing the power tool to be used in high-torque/high load applications.
Claims18
A power tool assembly comprising:
- a power tool comprising a housing having a barrel portion;
- and
- an auxiliary handle assembly comprising:
- a strap configured to encircle the barrel portion, the strap having a first end and a second end;
- a handle base coupled to the first end of the strap, the handle base having a chamber disposed therein and a yoke disposed within the chamber;
- and
- an over-center linkage assembly disposed within the chamber, the over-center linkage assembly having a first end coupled to the yoke, a second end rotatably coupled to the second end of the strap, and a lever pivotally coupled to the handle base and the second end of the over-center linkage assembly, the lever configured to cause the second end of the over-center linkage assembly to rotate over center in a first direction when the lever is depressed against the handle base to engage the strap against the barrel portion for securing the auxiliary handle assembly to the power tool.
An auxiliary handle assembly including:
- a strap configured to encircle a barrel portion in a housing of a power tool, the strap having a first end and a second end;
- a handle base coupled to the first end of the strap, the handle base having a chamber disposed therein, and a yoke disposed within the chamber;
- and
- an over-center linkage assembly disposed within the chamber, the over-center linkage assembly having a first end coupled to the yoke, a second end rotatably coupled to the second end of the strap, and a lever pivotally coupled to the handle base and the second end of the over-center linkage assembly, the lever configured to cause the second end of the over-center linkage assembly to rotate over center in a first direction when the lever is depressed against the handle base to engage the strap against the barrel portion for securing the auxiliary handle assembly to the power tool.
An auxiliary handle assembly comprising:
- a strap configured to encircle a barrel portion in a housing of a power tool, the strap having a first end and a second end;
- a handle base coupled to the first end of the strap, the handle base having a chamber disposed in the handle base, and a yoke disposed within the chamber;
- an over-center linkage assembly disposed within the chamber, the over-center linkage assembly having a first end coupled to the yoke, a second end rotatably coupled to the second end of the strap, and a lever pivotally coupled to the handle base and the second end of the over-center linkage assembly, the lever configured to cause the second end of the over-center linkage assembly to rotate over center in a first direction when the lever is depressed against the handle base to engage the strap against the barrel portion for securing the auxiliary handle assembly to the power tool;
- and
- a release pivotally coupled to the handle base, the release configured to pivot the lever away from the handle base when depressed to cause the over-center linkage to rotate over-center in a second direction to disengage the strap from the barrel portion to release the auxiliary handle assembly from the power tool.
Dependencies are inferred from the claim text.