Abstract: A negative stiffness apparatus includes a fluid filled bellows interposed between a first surface and a second surface wherein the bellows and the first and second surfaces have an orientation of substantial equilibrium between the first and second surfaces. The bellows and the first and second surfaces include other orientations wherein the first and second surfaces are displaced from the orientation of substantial equilibrium and the bellows exerts a displacement force to urge the first and second surfaces further away from the orientation of substantial equilibrium.

Abstract: A wheel with a suspension system being connectable to a vehicle, like a wheel chair, comprises a hub (38) and a rim (34) rotatable about the axle (42) of the hub (38). Between the hub (38) and the rim (34), a number of support members (40) is located. The support members (40) are adapted to retain the distance when stressed up to a threshold value and recoverly alter the distanced when stressed over this threshold value. According to the invention, the support members (40) are comprising spring elements (50), damping strokes by compression if the support member (40) is compressed or elongated. The spring elements (50) are preferably preloaded.

Abstract: A negative stiffness apparatus includes a fluid filled bellows interposed between a first surface and a second surface wherein the bellows and the first and second surfaces have an orientation of substantial equilibrium between the first and second surfaces.

Abstract: Provided is a filtration system including a filter housing having an inlet port and an outlet port. A plurality of filtration units are disposed within the filter housing. The system can further include at least one cleaning system configured for cleaning at least one filtration unit of the plurality of filtration units and at least one drive unit. The at least one drive unit can be configured for displacing one or both of said at least one filtration unit of the filtration units and the at least one cleaning system with respect to the other of said at least one filtration unit of the filtration units and said at least one cleaning system.

Abstract: A wheel with a suspension system being connectable to a vehicle, like a wheel chair, comprises a hub (38) and a rim (34) rotatable about the axle (42) of the hub (38). Between the hub (38) and the rim (34), a number of support members (40) is located. The support members (40) are adapted to retain the distance when stressed up to a threshold value and recoverly alter the distanced when stressed over this threshold value. According to the invention, the support members (40) are comprising spring elements (50), damping strokes by compression if the support member (40) is compressed or elongated. The spring elements (50) are preferably preloaded.

Abstract: A retractable covering system including a screen that is movable between a retracted and an extended configuration and at least two tensioning members attached to a leading edge of the screen and arranged to pull the screen in opposite transverse directions so as to create transverse tension in the screen.

Abstract: A retractable covering system including a screen that is movable between a retracted and an extended configuration and at least two tensioning members attached to a leading edge of the screen and arranged to pull the screen in opposite transverse directions so as to create transverse tension in the screen.

Abstract: A covering apparatus comprising an extendible screen (3), a longitudinal flexible element (4) and a rotatable member (6), wherein one of the longitudinal flexible element and the rotatable member is fixed and the screen (3) is attached to the other of the longitudinal flexible element and the rotatable member so as to permit relative movement of the screen relative to the fixed part, wherein the rotatable member is frictionally engaged with the longitudinal flexible element, and wherein there is provided means for preventing rotation of the rotatable member, whereby the screen is held in position relative to the fixed part.

Abstract: A pump apparatus for transporting at least one fluid, comprising a shaft, wherein the shaft has a longitudinal axis; a motor, wherein the motor is adapted to rotate the shaft about the longitudinal axis; and, a plurality of gerotors, wherein the gerotors are attached to the shaft along the longitudinal axis and wherein the shaft rotation actuates the plurality of gerotors rotation, causing pumping of the at least one fluid.

Abstract: A chemical injection system, comprising: a drive mechanism; a housing removably attached to the drive mechanism; at least one chemical inlet located on the housing; and, a valve spool located within the housing and provided with at least one chemical pass-through port, wherein the drive mechanism rotates the valve spool to align the chemical pass-through port with the chemical inlet.

Abstract: A pump apparatus for transporting at least one fluid, comprising a shaft, wherein the shaft has a longitudinal axis; a motor, wherein the motor is adapted to rotate the shaft about the longitudinal axis; and, a plurality of gerotors, wherein the gerotors are attached to the shaft along the longitudinal axis and wherein the shaft rotation actuates the plurality of gerotors rotation, causing pumping of the at least one fluid.