B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
B66F 9/065 (2006.01) B66C 23/70 (2006.01) B66F 11/04 (2006.01) E02F 3/28 (2006.01) E02F 3/30 (2006.01) E02F 3/34 (2006.01)
Patent
CA 2475542
A telescoping lift arm assembly (22) has an outer lift arm tube (40, 140, 200, 250) that has spaced side walls (58, 158, 206, 258), and outwardly extending flange guide panels (60, 160, 210, 260) at the lower portions of the side walls. An inner lift arm tube (42, 142, 218, 252) is generally bell-shaped and fits into the outer lift arm tube (40, 140, 200, 250). The inner lift arm tube (42, 142, 218, 252) is held in place with a cross support plate (82, 182, 232, 286) that is supported on the outer lift arm tube (40, 140, 200, 250). There are linear bearings (80, 80A, 84, 84A, 180, 180A, 184, 184A, 228, 234, 272) between the mating outwardly flared flanges (74, 174, 222, 270) and panels (60, 160, 210, 260), as well as between the support plate (82, 182, 232, 286) and mating lower surfaces of the inner lift arm tube (42, 142, 218, 252).
L'invention porte sur un ensemble bras de levage télescopique (22) qui possède un tube externe (40, 140, 200, 250) dont les parois latérales sont espacées (58, 158, 206, 258) et des panneaux de guidage à rebord s'étendant vers l'extérieur (60, 160, 210, 260) au niveau des parties inférieures des parois latérales ; un tube interne (42, 142, 218, 252) en forme de cloche qui s'adapte dans le tube externe (40, 140, 200, 250). Le tube interne (42, 142, 218, 252) est maintenu en place par une plaque support transversale (82, 182, 232, 286) qui est supportée sur le tube externe (40, 140, 200, 250). Des paliers linéaires (80, 80A, 84, 84A, 180, 180A, 184, 184A, 228, 234, 272) sont placés entre les rebords d'accouplement évasés vers l'extérieur (74, 174, 222, 270) et les panneaux (60, 160, 210, 260), et entre la plaque support (82, 182, 232, 286) et les surfaces inférieures correspondantes du tube interne (42, 142, 218, 252).
Albright Larry E.
Fischer Gregory L.
Roan Thomas J.
Borden Ladner Gervais Llp
Clark Equipment Company
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