Utility device

Claim 2

A boom assembly for a vehicle, said boom assembly comprising supporting means adapted to be affixed to the vehicle, a generally horizontally-extending shaft carried by said supporting means and positioned relative to said supporting means so as to be parallel to the normal forward and rearward movement of the vehicle, a support member on said shaft and pivotable in a vertical plane which is transverse to the normal forward and rearward movement of the vehicle, a boom having one end thereof pivotally connected to said support member with a pivot axis of the boom positioned perpendicular to the axis of said shaft to enable the boom to rotate in a plane perpendicular to the vertical plane of movement of said support member, means for pivoting said boom in its plane about its pivot axis, a fluidoperated cylinder having an end pivotally connected to said supporting means and having a piston rod connected to move said support member in its vertical plane perpendicular to said shaft, an arm pivotally connected to the other end of said boom, means for pivoting said arm relative to said boom, and a work tool carried by an end portion of said arm.

Claim 3

A boom assembly according to claim 1 characterized by the pivot connection of said boom and said arm is perpendicular to the axis of said shaft.

Claim 4

A boom assembly according to claim 1 characterized by a second fluid-operated cylinder located on the side of said shaft opposite the first fluid-operated cylinder and connected in opposition to the first fluid-operated cylinder so that an extension of a piston rod of the first fluid-operated cylinder must be accompanied by a retraction of a piston rod of the second fluid-operated cylinder, and vice versa.

Claim 5

A boom assembly according to claim 1 characterized by said means for pivoting said boom in its plane about its pivot axis comprises a fluid-operated cylinder having a piston rod, with the piston rod connected to one of said boom and said support member and having an end pivotally connected to the other of said support member and said boom.

Claim 6

A utility vehicle comprising a mobile unit, a base supporting member removably secured to said mobile unit, a generally horizontally-extending shaft journaled upon said base supporting member, a support member carried by said horizontal shaft and pivotable in a vertical plane which is transverse to the normal forward and rearward movement of the vehicle, a boom having one end thereof pivotally connected to said support member with a pivot axis of the boom positioned perpendicular to the axis of said shaft to enable the boom to rotate in a plane perpendicular to the vertical plane of movement of said support member, a fluid-operated cylinder having an end pivotally connected to said supporting member and having a piston rod connected to move said support member in its vertical plane, a tool, and means for pivotally connecting said tool to the other end of said boom.

Claim 7

A utility vehicle comprising a mobile unit, a base supporting member removably secured to said mobile unit, a generally horizontally-extending shaft journaled upon said base supporting member, a support member carried by said horizontal shaft and pivotable in a vertical plane which is transverse to the normal forward and rearward movement of the vehicle, a boom having one end thereof pivotally connected to said support member with a pivot axis of the boom positioned perpendicular to the axis of said shaft to enable the boom to rotate in a plane perpendicular to the vertical plane of movement of said support member, a fluid-operated cylinder having an end pivotally connected to said supporting member and having a piston rod connected to move said support member in its vertical plane, a tool, and means for pivotally connecting said tool to the other end of said boom.

Claim 8

A boom assembly according to claim 5 characterized by a second fluid-operated cylinder located on the side of said shaft opposite the first fluid-operated cylinder and having an end pivotally connected to said supporting member and having a piston rod connected to move said support member in its vertical plane perpendicular to the axis of said shaft, said first and second cylinders being in opposition such that an extension of a piston rod of the first fluid-operated cylinder must be accompanied by retraction of a piston rod of the second fluid-operated cylinder, and vice versa.

Claim 9

A boom assembly according to claim 5 characterized by said means for pivoting said boom comprises a fluid-operated cylinder having a piston rod, with the piston rod connected to one of said booms and said support member, and having an end pivotally connected to the other of said support member and said boom.

Claim 10

A boom assembly for a vehicle, said boom assembly comprising supporting means adapted to be affixed to the vehicle, a generally horizontally-extending shaft carried by said supporting means and positioned relative to said supporting means so as to be parallel to the normal forward and rearward movement of the vehicle, a support member on said shaft and pivotable in a vertical plane which is transverse to the normal forward and rearward movement of the vehicle, a boom having one end thereof pivotally connected to said support member with a pivot axis of the boom positioned perpendicular to the axis of said shaft to enable the boom to rotate in a plane perpendicular to the vertical plane of movement of said support member, means for pivoting said boom in its plane about its pivot axis comprising a fluid-operated cylinder having a piston rod with the piston rOd connected to one of said boom and said support member, and having an end pivotally supported by the other of said support member and said boom, a second fluid-operated cylinder having a piston rod, with the piston rod connected to one of said support means and said supporting member, and having an end connected to the other of said support member and said supporting means, a third fluid-operated cylinder located on the side of said shaft opposite said second fluid-operated cylinder, with a piston rod of said third fluid-operated cylinder being connected to one of said supporting means and said support member and with an end of said third fluid-operated cylinder being pivotally connected to the other of said supporting member and said supporting means, said second fluid-operated cylinder and said third fluid-operated cylinder being connected in opposition so that an extension of the piston rod of said second fluid-operated cylinder must be accompanied by a retraction of the piston rod of said third fluid-operated cylinder, and vice versa.

Claim 11

A boom assembly for a vehicle, said boom assembly comprising supporting means adapted to be affixed to the vehicle, a generally horizontally-extending shaft carried by said supporting means and positioned relative to said supporting means so as to be parallel to the normal forward and rearward movement of the vehicle, a support member on said shaft and pivotable in a vertical plane which is transverse to the normal forward and rearward movement of the vehicle, a boom having one end thereof pivotally connected to said support member with a pivot axis of the boom positioned perpendicular to the axis of said shaft to enable the boom to rotate in a plane perpendicular to the vertical plane of movement of said support member, means for pivoting said boom in its plane about its pivot axis comprising a fluid-operated cylinder having a piston rod with the piston rOd connected to one of said boom and said support member, and having an end pivotally supported by the other of said support member and said boom, a second fluid-operated cylinder having a piston rod, with the piston rod connected to one of said support means and said supporting member, and having an end connected to the other of said support member and said supporting means, a third fluid-operated cylinder located on the side of said shaft opposite said second fluid-operated cylinder, with a piston rod of said third fluid-operated cylinder being connected to one of said supporting means and said support member and with an end of said third fluid-operated cylinder being pivotally connected to the other of said supporting member and said supporting means, said second fluid-operated cylinder and said third fluid-operated cylinder being connected in opposition so that an extension of the piston rod of said second fluid-operated cylinder must be accompanied by a retraction of the piston rod of said third fluid-operated cylinder, and vice versa.