Mobile folding restaurant booth style benches are provided, which may be arranged in opposed pairs to form restaurant style booths. An individual bench incorporates a mechanism for shifting the weight of the bench between a mobile base, which may be supported by swivel casters, and a stationary base, which may be supported by non-slip feet, actuated by pivoting a bench seat down from a folded storage position to an unfolded seating position. The weight shifting mechanism may include an engagement member, which is initially spaced apart from an actuator at a folded angle of the seat, and which contacts and begins transmitting force and movement to the actuator at a partially unfolded angle of the seat. Preferably, the bench further includes a biasing component that biases the stationary base upward relative to the mobile base, a locking mechanism that resists a force provided by the biasing component to retain the bench seat in the unfolded seating position, contoured shells or other covers for the seat and a seat back, and a back panel extending vertically above the seat back.

Mobile folding restaurant booth style benches are provided, which may be arranged in opposed pairs to form restaurant style booths. An individual bench incorporates a mechanism for shifting the weight of the bench between a mobile base, which may be supported by swivel casters, and a stationary base, which may be supported by non-slip feet, actuated by pivoting a bench seat down from a folded storage position to an unfolded seating position. The weight shifting mechanism may include an engagement member, which is initially spaced apart from an actuator at a folded angle of the seat, and which contacts and begins transmitting force and movement to the actuator at a partially unfolded angle of the seat. Preferably, the bench further includes a biasing component that biases the stationary base upward relative to the mobile base, a locking mechanism that resists a force provided by the biasing component to retain the bench seat in the unfolded seating position, contoured shells or other covers for the seat and a seat back, and a back panel extending vertically above the seat back.

An AGV including a support structure and at least one drive unit connected to the support structure, wherein each drive unit includes a wheel rotatable about a wheel axis and about a steering axis perpendicular to the wheel axis; a wheel motor arranged to drive the wheel about the wheel axis; and a steering motor arranged to drive the wheel about the steering axis; wherein the AGV further includes at least one actuation member movable in an additional degree of freedom; and wherein the at least one actuation member is arranged to be driven by the wheel motor and/or the steering motor of at least one drive unit in the additional degree of freedom. A method of controlling an AGV is also provided.

Disclosed are: a caster mounted on a teaching aid including a whiteboard, or furniture, etc. so as to conveniently and stably convert between a movement state and a stopping state; and a whiteboard including the caster. The present invention relates to a caster comprising: a wheel which is coupled to the lower end of a fixing shaft having a male screw formed on the upper side thereof so that a nut is fastened; a wheel moving means which comprises a slide member and an eccentric rotation member, wherein the slide member has a shaft hole punched on the central part thereof so as to allow the fixing shaft of the wheel to be penetrated and fastened by the nut, and has a working shaft hole formed on the circumferential surface thereof, and the eccentric rotation member has an eccentric shaft formed at one side thereof and a shaft bolt formed protrudingly from the center part of the other side thereof, the eccentric shaft being fitted into the working shaft hole of the slide member; a main body which comprises a first operating space, a second operating space, a third operating space, and a female screw, wherein the first operating space is penetrated at the central part thereof in the vertical direction so that the slide member is fitted thereto and can move up and down, the second operating space enables the wheel to rotate and move up and down, the third operating space is penetrated in the horizontal direction so that an eccentric member is fitted thereto and the eccentric shaft can be introduced into the first operating space, and the female screw is formed on the upper part of the main body for the fastening purpose; a working lever which has a coupling hole punched on the central part thereof, the coupling hole being fitted into the shaft bolt of the eccentric rotation member; a fixing nut which is screw-coupled to the shaft bolt of the eccentric rotation member so as to fix the working lever; and a fixing means which comprises a first fixing part or a second fixing part so as to prevent the eccentric rotation member fitted into the third operating space of the main body from being detached and stop the rotation of the eccentric rotation member. The caster is mounted on a pedestal fixed to the lower end of a column frame on which the whiteboard is mounted.

Disclosed are: a caster mounted on a teaching aid including a whiteboard, or furniture, etc. so as to conveniently and stably convert between a movement state and a stopping state; and a whiteboard including the caster. The present invention relates to a caster comprising: a wheel which is coupled to the lower end of a fixing shaft having a male screw formed on the upper side thereof so that a nut is fastened; a wheel moving means which comprises a slide member and an eccentric rotation member, wherein the slide member has a shaft hole punched on the central part thereof so as to allow the fixing shaft of the wheel to be penetrated and fastened by the nut, and has a working shaft hole formed on the circumferential surface thereof, and the eccentric rotation member has an eccentric shaft formed at one side thereof and a shaft bolt formed protrudingly from the center part of the other side thereof, the eccentric shaft being fitted into the working shaft hole of the slide member; a main body which comprises a first operating space, a second operating space, a third operating space, and a female screw, wherein the first operating space is penetrated at the central part thereof in the vertical direction so that the slide member is fitted thereto and can move up and down, the second operating space enables the wheel to rotate and move up and down, the third operating space is penetrated in the horizontal direction so that an eccentric member is fitted thereto and the eccentric shaft can be introduced into the first operating space, and the female screw is formed on the upper part of the main body for the fastening purpose; a working lever which has a coupling hole punched on the central part thereof, the coupling hole being fitted into the shaft bolt of the eccentric rotation member; a fixing nut which is screw-coupled to the shaft bolt of the eccentric rotation member so as to fix the working lever; and a fixing means which comprises a first fixing part or a second fixing part so as to prevent the eccentric rotation member fitted into the third operating space of the main body from being detached and stop the rotation of the eccentric rotation member. The caster is mounted on a pedestal fixed to the lower end of a column frame on which the whiteboard is mounted.

A cylinder device for a hydraulic lifting device has a housing and a piston rod axially movable relative to the housing. A rotary element is mounted on the housing in such a way that a rotary movement of the rotary element relative to the housing is possible and an axial movement of the rotary element relative to the housing is prevented. The piston rod has a movement transmission element, wherein the movement transmission element translates an axial movement of the piston rod into a rotary movement of the rotary element. A sensor unit is attached to the housing, which detects the rotary movement of the rotary element. Furthermore, a hydraulic lifting device with such a cylinder device, a chassis of a mobile device with a lifting device and a mobile device with a chassis are provided.

A caster apparatus is provided. In one embodiment, there is provided a caster apparatus including a caster wheel and a first driving wheel disposed on a first side of the caster wheel. The first driving wheel is configured to be driven by a first motor. A second driving wheel is disposed on a second side opposite to the first side of the caster wheel. The second driving wheel is configured to be driven by a second motor different from the first motor. A first actuator is configured to move the first driving wheel in a vertical direction to a ground according to a curvature of the ground. A second actuator is configured to move the second driving wheel in a vertical direction to the ground according to a curvature of the ground, wherein the first and second driving wheels are configured to steer the caster wheel.

In one or more arrangements, a portable livestock enclosure system is provided to facilitate stock cropping of a field. The system includes a mobile enclosure and one or more enclosed grazing areas. The one or more enclosed grazing areas are operably connected to the mobile enclosure. The mobile enclosure also includes a set of lift wheel assemblies configured to move a set of wheels between a retracted position and an extended position. The mobile enclosure and one or more enclosed grazing areas are lifted off of the ground to facilitate movement of the portable livestock enclosure system when set of wheels are moved to the extended position. The mobile enclosure and one or more enclosed grazing areas are placed on or near the ground when the set of wheels are moved to the retracted position.

A seat 100 moveable between a seat configuration and a bed configuration, the seat 100 comprising a squab 120 including upper and lower cushions 126, 124, a conversion mechanism configured to move the squab 120, for converting the seat 100 between the seat and bed configurations, and a backrest 122 connected to the squab 120 or conversion mechanism, for moving with the squab 120, the squab 120 being laterally displaceable by the conversion mechanism between a first position in the seat configuration and a second position in the bed configuration, and the backrest 122 being configured to occupy a space at an end of the squab 120 which is made available by lateral displacement of the squab 120 into the second position, and the upper cushion 126 of the squab 120 being movable relative to the lower cushion 124 for covering the backrest 122 in the bed configuration.

A seat 100 moveable between a seat configuration and a bed configuration, the seat 100 comprising a squab 120 including upper and lower cushions 126, 124, a conversion mechanism configured to move the squab 120, for converting the seat 100 between the seat and bed configurations, and a backrest 122 connected to the squab 120 or conversion mechanism, for moving with the squab 120, the squab 120 being laterally displaceable by the conversion mechanism between a first position in the seat configuration and a second position in the bed configuration, and the backrest 122 being configured to occupy a space at an end of the squab 120 which is made available by lateral displacement of the squab 120 into the second position, and the upper cushion 126 of the squab 120 being movable relative to the lower cushion 124 for covering the backrest 122 in the bed configuration.