Patent ID: 7396047

Claim:
A ride-on turf mowing machine rollover protection assembly comprising: (a) a mower chassis having left and right main rails, and having a plurality of cross rails spanning between the left and right main rails; (b) left and right upwardly opening quills; (c) left quill attaching means rigidly and abuttingly interconnecting the left main rail and the left upwardly opening quill; (d) right quill attaching means rigidly and abuttingly interconnecting the right main rail and the right upwardly opening quill; (e) a roll bar having downwardly extending left and right legs, lower ends of the left and right legs being respectively closely fitted for extension into the left and right upwardly opening quills; (f) roll bar attaching means removably mounting the left and right legs' lower ends respectively within the left and right upwardly opening quills; the left and right quill attaching means further respectively rigidly interconnecting the left and right upwardly opening quills and the chassis' left and right main rails; and (g) said left and right main rails having inner surfaces and said left and right upwardly opening quills having C channel configurations opening outwardly and being closed by said left and right main rail inner surfaces respectively; wherein said left and right quill attaching means comprises welding said left and right quills to the left and right main rail inner surfaces respectively.