Single-piece crankshaft
AssigneeMilwaukee Electric Tool Corporation
InventorsLuke Corsiglia, Beth E. Cholst
Life of this patent
Estimating the term…
Abstract
Crankshafts for handheld power tools are provided. A crankshaft includes an input section configured to be coupled to a motive device and an output section comprising first and second engagement members. The first and second engagement members are configured to drive a first and second cutting implement, wherein the first and second engaging members are spaced apart from each other in a direction along a rotational axis of the crankshaft and in a direction transverse to the rotational axis of the crankshaft, and wherein the first and second cutting implements are each coupled to the crankshaft by translating relative to the crankshaft in a direction along the rotational axis.
Claims20
A handheld power tool comprising:
- a first cutting implement;
- a second cutting implement;
- a motive device;
- and
- a crankshaft connecting the motive device to the first and second cutting implements, the crankshaft comprising:
- an input section coupled to the motive device;
- and
- an output section comprising:
- a first engaging member configured to drive the first cutting implement;
- and
- a second engaging member configured to drive the second cutting implement;
- wherein the first and second engaging members are spaced apart from each other in a direction along a rotational axis of the crankshaft and in a direction transverse to the rotational axis of the crankshaft, and
- wherein the first and second cutting implements are each coupled to the crankshaft by translating relative to the crankshaft in a direction along the rotational axis.
A handheld power tool comprising:
- a first cutting implement;
- a second cutting implement;
- a motive device;
- and
- a crankshaft connecting the motive device to the first and second cutting implements, the crankshaft comprising:
- an input section coupled to the motive device;
- and
- an output section comprising:
- a first engaging member configured to drive the first cutting implement;
- and
- a second engaging member configured to drive the second cutting implement;
- wherein the first and second engaging members are spaced apart from each other in a direction along a rotational axis of the crankshaft and in a direction transverse to the rotational axis of the crankshaft, and
- wherein the crankshaft comprises a single-piece construction in which the input section and output section are both integrally part of a single body.
A method of assembling a handheld power tool including a crankshaft and a first and second cutting implement, the method comprising:
- aligning a cavity of the first cutting implement with a rotational axis of the crankshaft to receive an output section of the crankshaft through the cavity;
- translating the first cutting implement with respect to the crankshaft in a direction parallel with the rotational axis until the first cutting implement is axially aligned with a first engaging member of the output section of the crankshaft;
- aligning a cavity of the second cutting implement with the rotational axis of the crankshaft to receive the output section of the crankshaft;
- and
- translating the second cutting implement with respect to the crankshaft in the same direction as the first cutting implement until the second cutting implement is axially aligned with a second engaging member of the output section of the crankshaft.
Dependencies are inferred from the claim text.