Mobile chassis
AssigneeLendal Pty Ltd
InventorsPaul Francis Salfinger, Brian John Salfinger
Life of this patent
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Abstract
A mobile chassis (10) characterized by a central frame (12) which is supported by four wheels (60, 68, 74, 76). Wheels (74 and 76) are respectively support on one end of side beams (14 and 16) in turn pivotably mounted to central frame (12) at (70 and 72) to pivot about Y--Y axis. Wheels (66 and 68) are mounted on ends of a transverse beam (18) which is pivotably mounted at (52) to the central frame so that vertical movement of each wheel is compensated by pivoted movement of beams (14, 16 and 18). Rollers (56) and segments (42) constrain movement of the beam (18).
Claims25
A mobile chassis characterised by a central frame, two lateral frames and a forward transverse member, in which each of the lateral frames and forward transverse member are mounted to the central frame in a pivotal manner, the lateral frames having at least a single wheel provided thereon and being pivotally mounted to the central frame at either side thereof about a transverse axis whereas the forward transverse member has a pair of wheels provided thereon and is pivotal about a longitudinal axis, the central frame having provided therein a forward portion containing a pivotal mounting for the forward transverse member and further defining in part two guide members, each lateral frame and the forward transverse member having a pivotal connection provided therebetween such that pivotal forces resulting from obstacles encountered by the wheels of the forward transverse member are compensated at least in part by that pivotal connection.
A means for minimising the pivotal action of a transverse member mounted to a mobile chassis about any axis other than that described by that mounting comprising the pivotal mounting of the transverse member to a forward portion of the mobile chassis, characterised in that the forward portion comprises in addition to the mounting two guide members such that two means for smooth engagement provided on the transverse member abut the guide members, the means for smooth engagement being spaced substantially equidistant from the pivotal mounting of the transverse member.
Dependencies are inferred from the claim text.