Agricultural sprayer boom

1. An agricultural sprayer boom comprising vertically spaced upper and lower beams extending along the boom connected by a plurality of brace members formed from a unitary bent tubular member that is secured to the upper and lower beams, and gripped by, a plurality of clamps, wherein at least one of the upper and lower beams present a linear protuberance extending along the boom axis, and wherein each of said clamps comprises a pair of parallel clamping sleeves which grip the protuberance and the tubular member respectively.

2. The boom according to claim 1 , wherein each clamp comprises two halves each having a profile that defines a portion of each of the clamping sleeves, wherein the halves of each clamp are secured together by bolts.

3. An agricultural sprayer boom comprising vertically spaced upper and lower beams extending along the boom connected by a plurality of brace members formed from a unitary bent tubular member that is secured to the upper and lower beams, and gripped by, a plurality of clamps, wherein the at least one of the upper and lower beams present a pair of opposing ledges, and wherein each clamp comprises a pair of lips and a channel, and wherein each lip engages a respective one of the ledges and the tubular member is received in the channel and held against the at least one of the upper and lower beams.

4. The boom according to claim 3 , wherein each clamp comprises two halves which are held together by a respective bolt.

5. The boom according to claim 3 , wherein the at least one of the upper and lower beams is formed from extrusion and comprises an extruded profile which defines the ledges.

6. The boom according to claim 3 , wherein the tubular member is formed from aluminum.

7. The boom according to claim 1 , wherein the tubular member is formed from aluminum.