Weighted boom assembly
AssigneeOshkosh Corporation
InventorJacob J. Perron
Life of this patent
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Abstract
A boom assembly includes a lower boom, an intermediate member, an upper boom, an intermediate link, and an actuator coupled between the intermediate member and the upper boom. The lower boom includes an intermediate member end and a base end, and the base end is configured to be pivotally coupled to a lift device. The intermediate member is pivotally coupled to the intermediate member end of the lower boom. The upper boom includes a first end pivotally coupled to the intermediate member, and the intermediate link is coupled directly between the upper boom and the lower boom. The intermediate member includes a base portion positioned to carry structural loading and a weighted portion positioned to provide counterweight for the lift device.
Claims20
A boom assembly, comprising:
- a lower boom including an intermediate member end and a base end, wherein the base end is configured to be pivotally coupled to a lift device;
- an intermediate member pivotally coupled to the intermediate member end of the lower boom;
- an upper boom having a first end pivotally coupled to the intermediate member;
- an intermediate link coupled directly between the upper boom and the lower boom;
- and
- an actuator coupled between the intermediate member and the upper boom;
- wherein the intermediate member includes a base portion positioned to carry structural loading and a weighted portion positioned to provide counterweight for the lift device.
A boom assembly, comprising:
- a lower boom including an intermediate member end and a base end, wherein the base end is configured to be pivotally coupled to a lift device;
- an intermediate member pivotally coupled to the intermediate member end of the lower boom;
- an upper boom having a first end pivotally coupled to the intermediate member;
- and
- a ballast coupled to the intermediate member and positioned to provide counterweight for the lift device.
A lift device, comprising:
- a chassis;
- and
- a boom assembly coupled to the chassis and moveable between a lowered position and an elevated position, comprising:
- a lower boom including an intermediate member end and a base end, wherein the base end coupled to the chassis;
- an intermediate member pivotally coupled to the intermediate member end of the lower boom;
- an upper boom including an intermediate end pivotally coupled to the intermediate member;
- and
- a ballast coupled to the intermediate member and positioned to provide counterweight for the lift device.
Dependencies are inferred from the claim text.