초록 ▼

An adjustable mobile base that accommodates machines of different effective footprints and allows them to be selectively moved from place-to-place or fixed at a given location. The mobile base assembly comprises a frame assembly comprised of corner members and side members. The side members are tele

An adjustable mobile base that accommodates machines of different effective footprints and allows them to be selectively moved from place-to-place or fixed at a given location. The mobile base assembly comprises a frame assembly comprised of corner members and side members. The side members are telescopically received within the corner members such that a width dimension and depth dimension of the base assembly can be changed to accommodate machines having different effective footprints. A lock system may be provided which employs one or more lock assemblies. Each lock assembly comprises a lock member that is slidably received within a lock housing and a drive member which is threadably received within the lock housing. Rotating the drive member in one direction elevates one or more wheels of the base assembly and thus frictionally engages the floor surface and prevents movement of the machine on the base assembly. Turning the drive member in the opposite direction allows the stop member to be retracted up into the housing assembly. In this unlocked position, the weight of the machine is borne by wheels that allow the machine to be rolled from one location to another.

대표청구항 ▼

[ I claim:] [1.] A mobile base for allowing machinery having an effective footprint within a predetermined range of effective footprints to be moved along a floor surface, comprising:a frame assembly having a width dimension and a depth dimension;first and second wheels attached to the frame assembl

[ I claim:] [1.] A mobile base for allowing machinery having an effective footprint within a predetermined range of effective footprints to be moved along a floor surface, comprising:a frame assembly having a width dimension and a depth dimension;first and second wheels attached to the frame assembly such that the first and second wheels rotate about a substantially horizontal fixed axis;third and fourth wheels attached to the frame assembly such thatthe third wheel rotates about a substantially vertical first steering axis and about a substantially horizontal first movable axis, andthe fourth wheel rotates about a substantially vertical second steering axis and a substantially horizontal second movable axis; anda locking system comprisinga lock housing defining a lock chamber,a lock member slideably mounted within the lock chamber of the lock housing such that the lock member moves between an unlocked position in which the lock member does not engage the floor surface and a locked position in which the lock member frictionally engages the floor surface, anda drive member that engages the lock housing such that rotation of the drive member causes the drive member to move towards or away from the floor surface, where the drive member is at least partly located within the lock chamber above the lock member and is capable of rotating with respect to the lock member; whereinthe frame assembly comprises means for allowing the width and depth dimensions to be adjusted among a plurality of discrete dimensions such that the mobile base can accommodate effective footprints within the predetermined range of effective footprints.