Patent ID: 6082708
Filing Date: 2000-07-04
Classification: B66F

Abstract:
A pneumatic jack, comprising:a base member having a bottom surface and a base side wall peripherally disposed about said base member;a lift member having a top surface;a bellows disposed between said base member and said lift member, said bellows comprising a flexible member having an upper end a lower end and one or more convolutions disposed between said upper end and said lower end;a top plate sealably connected to said upper end of said bellows and connected to said lift member;a bottom plate sealably connected to said lower end of said bellows and connected to said base member, said top plate, said bellows and said bottom plate forming a pressurizable chamber; andinlet means in communication with said chamber for admitting pressurized air into said chamber to raise said lift member relative to said base member and for withdrawing pressurized air from said chamber to lower said lift member, said inlet means suitable for connection to a source of pressurized air.