| 摘要 |
1,147,091. Preventing overturning. LOCKHEED AIRCRAFT CORP. 11 April, 1967, No. 16561/67. Heading B7D. [Also in Division B8] To prevent overturning of a lift truck in which the mast assembly 19 is pivotable to a transversely facing position (see Division B8), the mast assembly is provided at its base with ground-engaging rollers 80 and with outriggers 81 which are provided with rollers 84 and which are pivotable about an axis 85 between the operative position shown and an upwardly extending position by hydraulic rams 87. |
