Sprayer boom structure

Claim 2

A spray boom assembly comprising: (a) an inner frame adapted for mounting to a transport vehicle; (b) an elongate spray boom having a center portion and opposite ends, said center portion being mounted to said frame in facing relationship; (c) a pivot means connected to and extending through said inner frame and said center portion and permitting up and down swinging movement of said spray boom about said pivot means in response to movement of said vehicle; (d) a biasing frame facing said inner frame and said center portion and affixed to said pivot means for rotation thereabout; (e) means extending between said inner frame and said biasing frame and positioning said biasing frame at a rotational attitude relative thereto; and (f) shock absorber means connected to and extending between said spray boom center portion and said biasing frame for absorbing rotational transients and limiting rotation of said spray boom about said pivot means.

Claim 3

The spray boom assembly set forth in claim 1 wherein: (a) said means extending between said inner frame and said biasing frame are adjustable means providing a plurality of selective positions of rotational attitude of said biasing frame relative to said inner frame.

Claim 4

The spray boom assembly set forth in claim 2 wherein: (a) said adjustable means include an arm extended outwardly of said inner frame and having a power fluid responsive ram operably connected thereto and to said biasing frame; (b) whereby said ram is expansible and contractible to rotate said biasing frame about said pivot means.

Claim 5

The spray boom assembly set forth in claim 1 wherein: (a) said inner frame includes spaced, upright frame members and cross frame members supporting a first power fluid ram positioned between said upright frame members; (b) said pivot means is connected to said cross frame members supporting said power fluid ram whereby said ram is expansible and contractible to raise and lower said spray boom and said biasing frame relative to said vehicle.

Claim 6

The spray boom assembly set forth in claim 4 wherein: (a) said means extending between said inner frame and said biasing frame include an arm connected to and extending from said inner frame and a second power fluid ram extending from said arm to said biasing frame at a position thereon spaced laterally from said pivot means; (b) whereby said second power fluid ram is expansible and contractible to rotate said biasing frame about said pivot means and position said biasing frame in a tilted attitude.

Claim 7

The spray boom assembly set forth in claim 1 wherein: (a) said shock absorber means include tension and compression resistant members extending between and connected to said biasing frame and said center portion at respective positions spaced laterally from said pivot means.

Claim 8

The spray boom assembly set forth in claim 6 wherein: (a) said tension and compression resistant members include a coil spring member and a sealed cylinder and piston ram member respectively having opposite ends connected to said biasing frame and said center portion.

Claim 9

The spray boom assembly set forth in claim 6 wherein: (a) said tension and compression resistant members include two sets thereof each said set including one said coil spring member and one said sealed ram member, each said set being positioned on opposite sides of said pivot means.

Claim 10

A spray boom assembly comprising: (a) an inner frame mounted upon a transport vehicle and having a first power fluid ram mounted therein in upstanding relationship; (b) an elongate spray boom having a center section and outwardly extending wing section, said center portion being mounted against said inner frame in facing relationship and having opposite end portions; (c) a pivot mount including a pin member connected to and extending from said inner frame and through said center section, said center section having a bearing means pivotally mounting said center section to said inner frame via said pivot mount; said pivot mount being operably connected to said first power fluid ram for raising and lowering of said spray boom relative to said vehicle; (d) a biasing frame having opposite end portions facing each inner frame and said center section and including a bearing means pivotally mounting said biasing frame to said inner frame via said pivot mount for rotation thereabout; (e) a second power fluid ram and support arms therefor extending between and connected to said biasing frame and said inner frame and spaced from said pivot means, said second power fluid ram being extensible and contractible to tilt said biasing frame sidewardly relative to said inner frame in a generally upright plane; and (f) spaced sets of tension and compression resistant members extending between said biasing frame and said center section, said sets respectively including a coil spring and a sealed ram member for absorbing rotational and shock transients and maintaining said center section at a rotational attitude relative to said biasing frame; (g) whereby said biasing frame is rotatable through operation of said second power fluid ram for sideward tilting, thereby urging said center section into tilted relationship therewith and retaining shock absorbency therebetween.

Claim 11

A spray boom assembly comprising: (a) an inner frame mounted upon a transport vehicle and having a first power fluid ram mounted therein in upstanding relationship; (b) an elongate spray boom having a center section and outwardly extending wing section, said center portion being mounted against said inner frame in facing relationship and having opposite end portions; (c) a pivot mount including a pin member connected to and extending from said inner frame and through said center section, said center section having a bearing means pivotally mounting said center section to said inner frame via said pivot mount; said pivot mount being operably connected to said first power fluid ram for raising and lowering of said spray boom relative to said vehicle; (d) a biasing frame having opposite end portions facing each inner frame and said center section and including a bearing means pivotally mounting said biasing frame to said inner frame via said pivot mount for rotation thereabout; (e) a second power fluid ram and support arms therefor extending between and connected to said biasing frame and said inner frame and spaced from said pivot means, said second power fluid ram being extensible and contractible to tilt said biasing frame sidewardly relative to said inner frame in a generally upright plane; and (f) spaced sets of tension and compression resistant members extending between said biasing frame and said center section, said sets respectively including a coil spring and a sealed ram member for absorbing rotational and shock transients and maintaining said center section at a rotational attitude relative to said biasing frame; (g) whereby said biasing frame is rotatable through operation of said second power fluid ram for sideward tilting, thereby urging said center section into tilted relationship therewith and retaining shock absorbency therebetween.