Patent ID: 7421952

Claim:
A railroad track maintenance and repair system comprising: a frame; a plurality of track engageable wheels, said wheels configured to engage spaced-apart rails of a track, a rotation of said wheels moving said frame along said track rails; a cab support frame fixed to said frame; a cab on said cab support frame for a system operator, said cab including a floor and at least a wall upwardly extending from said floor, said floor at a first position atop said cab support frame for operator support during an operation of said system; means for rotating said cab support frame and cab thereon about an imaginary vertical axis passing through said frame and track; a segmented boom assembly comprising a main boom and a jib; means for mounting said main boom to said frame in pivotal movement relative thereto, and in concurrent rotatable movement with said cab, said jib mounted to said boom in pivotal movement relative to said boom; means for controlling pivotal movement of said boom; means for controlling pivotal movement of said jib; means for tilting said cab floor independent of said movement of said boom assembly from said first position atop said cab support frame to a second subsequent position approaching a vertical whereby said cab wall approaches a horizontal; so as to present a reduced height profile of said cab at said subsequent position during at least a travel on said wheels guided along the track; means on a free end of said jib adapted for releasably connecting a selectable maintenance implement thereon.