Full boom pivot breakaway

A boom assembly comprising:

• a support;
• a first wing pivotably coupled to the support so as to rotate about a first axis;
• a first force applying member having a first end pivotably coupled to the support and a second end pivotably coupled to the first wing at a first pivot point for rotation about a second axis on a first side of the first axis, wherein the first force applying member is configured to apply a first force to the first wing;
• and
• a second force applying member, wherein the second force applying member is configured to apply a second force to the first wing such as the first and second force applying members apply opposing equal torques to the first wing about the first axis, whereby the first wing is held in a spray position, and a third force to the first wing such that the first wing is moved to a folded position.

A boom assembly comprising:

• a support;
• a wing pivotably coupled to the support so as to rotate about a first axis;
• first means coupled between the support and the wing for applying a first force to the wing on a first side of the first axis;
• and
• second means coupled between the support and the wing for applying a second force to the wing on a second opposite side of the first axis such that the first and second means apply opposing equal torques to the first wing about the first axis, wherein the wing is held in a spray position, and for applying a third force to the wing such that the wing is moved to a folded position.

A sprayer comprising:

• a fluid reservoir;
• a central support;
• and
• a plurality of ground engaging motive members supporting the fluid reservoir and the central support above ground;
• a wing pivotably coupled to the support so as to rotate about a first axis;
• a plurality of spray nozzles fluidly connected to the fluid reservoir and carried by the wing;
• a first cylinder-piston assembly having a first end pivotably to the support and a second end pivotably coupled to the wing at a first pivot point for rotation about a second axis on a first side of the first axis;
• a second cylinder-piston assembly having a first end pivotably coupled to the support and a second end pivotably coupled to the wing at a second pivot point for rotation about a third axis on a second side of the first axis, whereby extension and retraction of the first and second cylinder-piston assemblies applies varying opposing torques to the wing depending upon an angular orientation of the wing about the first axis.