A relatively low profile pneumatic jack comprising a bellows made from a flexible member having at least one convolution for lifting heavy objects, such as vehicles. The bellows is located between a lift member that abuts the object to be lifted and a base member which abuts the surface from which the object is being lifted (i.e., the ground). A top plate and a bottom plate connect to the bellows and the lift and base members to form an air-tight chamber within the bellows. An inlet valve is connected to the chamber to allow the introduction of pressurized air in the chamber. A valve assembly having safety systems therein to prevent overfilling of the jack is disposed between the supply of pressurized air and the inlet valve. A safety system inside the chamber further prevents overfilling of the jack.
申请公布号
CA2248063(A1)
申请公布日期
1999.03.23
申请号
CA19982248063
申请日期
1998.09.23
申请人
MULLICAN, DIANA C.;MULLICAN, VERNON T.;SOLAKIAN, HARRY M.
发明人
MULLICAN, DIANA C.;MULLICAN, VERNON T.;SOLAKIAN, HARRY M.