Abstract: An object of the present invention is to provide a screen frame, which is capable of producing clear 3-D video images with a simple structure. The screen frame includes: a frame structure being capable of covering over a screen of a display unit at a prescribed distance away from the screen. Furthermore, the frame structure encloses a window space, whose size is smaller than the size of the screen of the display unit so as to cover parts of the display unit other than the screen. By attaching the screen frame of the present invention, which has a simple structure, to a screen of a display unit, video images on the screen have visual depth, so the user is hallucinated as if he or she is really watching an outdoor scene through a window. Furthermore, the video images on the screen can be made clear by removing influence of external light.

Abstract: An object of the present invention is to provide a rotary drive system and an engine which have greater toughness and which are capable of smoothly converting linear thrust force into rotary torque. In the present invention, a pair of elongated members are arranged parallel in a first direction. A moving guide is spanned between the elongated members, arranged in a second direction perpendicular to the first direction, and capable of moving in the first direction. A moving body is capable of moving in the second direction along the moving guide. A rotary shaft is capable of rotating about an axial line, which is perpendicular to the first direction and the second direction. A lever has one part, which is pivotably connected with the moving body, and another part, which is fixed to the rotary shaft, whereby the lever rotates the rotary shaft when the moving body moves round. A driving mechanism moves the moving guide in the first direction. A control mechanism stabilizes rotational speed of the rotary shaft.

Abstract: An object of the present invention is to provide a drive system having a simple structure, which is capable of synchronously moving travellers, having high positioning accuracy and reducing the manufacturing cost and operating noise. A pair of guides are provided on a base in a first direction. A pair of travellers are capable of moving in the first direction alongside the guides. A first rotary guide is provided to one of the travellers. A second rotary guide is provided to the other traveller. A first tension member is tensionally engaged with the rotary guides, one end section is extended from the first rotary guide and fixed to the base, the other end is extended from the second rotary guide in the opposite direction and fixed to the base.

Abstract: An agitator is capable of efficiently agitating clothing without damaging fibers of the clothing. The agitator includes an agitating section having agitating pieces, which are capable of agitating clothes, or any other medium, and a driving mechanism for moving the agitating section. The driving mechanism moves the agitating section in a plane such that each agitating piece moves in a substantially identically shaped path.

Abstract: The object of the present invention is to provide a drive unit including a movable gear section having a first pinion gear and a second pinion gear, which are coaxially integrated. A driving mechanism is provided for spinably moving the movable gear section in a circular orbit. A fixed ring gear is coaxial arranged relative to the circular orbit, the fixed ring gear having a first gear section, formed on a circumferential face, wherein the first pinion gear is engaged with the first gear section, and wherein the movable gear section is spun when the movable gear section is moved in the circular orbit. An output ring gear is coaxial positioned relative to the fixed ring gear and is capable of rotating with respect thereto. The output ring gear includes a second gear section, formed on a circumferential face, wherein the second pinion gear is engaged with the second gear section, and wherein the output ring gear is rotated when the movable gear section is spun.

Abstract: An object of the present invention is to provide a robot, which is capable of moving a multi-joint arm unit in a broad area with high positioning accuracy and high speed. In the robot of the present invention, first guides are arranged in a first direction. Second guides are arranged in a second direction perpendicular to the first direction. A first moving guide is arranged parallel to the first guides and capable of moving along the second guides. A second moving guide is arranged parallel to the second guides and capable of moving along the first guides. A moving body is capable of moving on the first moving guide and the second moving guide. A first driving mechanism moves the first moving guide. A second driving mechanism moves the second moving guide. The multi-joint arm unit is rotatably attached to the moving body and has a plurality of arms whose ends are pivotably connected each other.

Abstract: An object of the present invention is to provide a rotary motion drive system, which is capable of increasing the efficiency of converting the linear motion into the rotary motion. In the rotary motion drive system of the present invention, a pair of first guides are arranged parallel in a first direction. A pair of second guides are arranged parallel in a second direction perpendicular to the first direction. A first rod is arranged parallel to the first guides, the first rod is capable of keeping parallel to the first guides and moving in the second direction. A second rod is arranged parallel to the second guides, the second rod is capable of keeping parallel to the second guides and moving in the first direction. A moving body is capable of moving on the first rod and the second rod in the first direction and the second direction within a square plane, which is rounded by the first guides and the second guides. A first driving mechanism moves the second rod in the first direction.

Abstract: The object of the present invention is to provide a speed changer having a simple structure and great speed changing ratio. In the speed changer of the present invention, a movable gear section has a first pinion gear and a second pinion gear, which are coaxially integrated and which are capable of spinning about their common axis. A motor moves the movable gear section on a circular orbit. A fixed ring gear fixedly encompasses the circular orbit, the fixed ring gear has a first inner gear section, which is formed on an inner circumferential face, wherein the first pinion gear is capable of engaging with the first inner gear section and rolling thereon. An output ring gear rotatably encompasses the circular orbit, the output ring gear is coaxial to the fixed ring gear, the output ring gear has a second inner gear section, which is formed on an inner circumferential face, wherein the second pinion gear is capable of engaging with the second inner gear section and rolling thereon.

Abstract: The object of the present invention is to provide a compact drive system, which is capable of highly synchronizing the parallel movement of travellers. In the drive system of the present invention, a pair of racks are arranged parallel in a first direction. A pair of travellers are capable of moving in the first direction. A first shaft is arranged in a second direction and rotatably connected to the travellers. A second shaft is arranged in the second direction and rotatably connected to the travellers. A pair of first pinion gears are fixed to the first shaft and respectively engaged with each rack. A pair of second pinion gears are fixed to the second shaft and respectively engaged with each rack. Driving means moves the travellers in the first direction. The first pinion gears are engaged with the racks with torsion, which has been applied to the first shaft in a first circumferential direction. The second pinion gears are engaged with the racks with torsion in a second circumferential direction.

Abstract: The object of the present invention is to provide a rotary drive system, which is capable of simultaneously rotating a plurality of output shafts in the same manner. The rotary drive system of the present invention includes a driving mechanism for moving a moving body around in a plane; a plurality of output shafts being arranged perpendicular to the plane, the output shafts being capable of rotating on their axes at prescribed positions; and a plurality of output levers wherein a first part of each output lever is rotatably connected to each output shaft and a second part thereof is rotatably connected to a face of the moving body, which is parallel to the plane, and wherein the distance between the first and second parts of each output lever is made equal.

Abstract: In the two dimensional drive system of the present invention, four corner blocks are respectively provided at each corner of a rectangular plane, which is enclosed by the first looped members arranged in a first direction and the second looped members arranged in a second direction perpendicular to the first direction. Four guide pipes are spanned between two adjacent the corner blocks. Both ends of each guide pipe are opened. Four connecting shafts are respectively pierced through the guide pipes. Piercing the connecting shafts through the guide pipes, bending of the connecting shafts and increasing of load can be prevented.

Abstract: A rotary drive mechanism, which is capable of precisely controlling the rotational angle of an output shaft or a rotor. In the rotary drive system of the present invention, a first moving guide is provided in parallel to first guides, each end section of the first moving guide is movably connected to second guides. A second moving guide is provided in parallel to the second guides, each end section of the second moving guide is movably connected to the first guides. A moving body is capable of moving on the first and the second moving guides. A first motor moves the moving body in the first direction, and a second motor moves the moving body in the second direction. A lever rotates an output shaft when the moving body moves round the output shaft, an outer end section of the lever is rotatably connected to the moving body and capable of moving in the longitudinal direction with respect thereto, an inner end section of the lever is fixed to one end of the lever.

Abstract: The object of the of the present invention is to provide a two dimentional drive system having a small and simple structure. The two dimensional drive system comprises: a first lever whose one end is fixed to a first shaft; a second lever whose one end is fixed to a second shaft; a third lever whose one end is fixed to a third shaft; a fourth lever whose one end is fixed to a fourth shaft; a first moving guide whose one end is rotatably connected to the other end of the first lever and whose the other end is rotatably connected to the other end of the second lever; a second moving guide whose one end is rotatably connected to the other end of the third lever and whose the other end is rotatably connected to the other end of the fourth lever; and a moving body being capable of moving on the first moving guide and the second moving guide.

Abstract: A delivery system, which is capable of quickly and correctly delivering an item to a destination. In the delivery system of the present invention, a moving section is capable of holding an item to be delivered. A driving mechanism is capable of moving the moving section in a plane. A frame section encloses the plane in which the moving section is moved. A plurality of input sections are capable of independently inputting data, and are provided to the frame section. A control section is capable of controlling the driving mechanism on the basis of the data inputted by the input sections so as to move the moving section in the plane.

Abstract: In the two dimensional drive system of the present invention, each end of a first X-shaft is connected to each first Y-guide, and the first X-shaft is capable of moving along the first Y-guides. Each end of a second X-shaft is connected to each second Y-guide, and the second X-shaft is capable of moving along the second Y-guides. Each end of a Y-shaft is connected to each X-guide, and the Y-shaft is capable of moving along the X-guides. A first moving body always locates at a cross point of the first X-shaft and the Y-shaft, and is capable of moving thereon. A second moving body always locates at a cross point of the second X-shaft and the Y-shaft, and is capable of moving thereon. An X-drive mechanism moves the Y-shaft along the X-guides. A first Y-drive mechanism moves the first X-shaft along the first Y-guides. A second Y-drive mechanism moves the second X-shaft along the second Y-guides.

Abstract: The present invention relates to a walking robot. The robot includes: an X-elongated member; a Y-elongated member; a moving body moving on the X- and Y-elongated members; an X-leg section provided to the X-elongated member, the X-leg section being capable of extending and shortening in the Z-direction; a Y-leg section being provided to the Y-elongated member, the Y-leg section being capable of extending and shortening in the Z-direction; an X-driving mechanism for moving the moving body in the X-direction; a Y-driving mechanism for moving the moving body in the Y-direction; a first Z-driving mechanism for extending and shortening the X-leg section; and a second Z-driving mechanism for extending and shortening the Y-leg section. With this structure, the robot is able to stride over obstructions by extending the X- and the Y-leg sections so as to avoid interference without changing course.

Abstract: A walking robot capable of easily avoiding obstructions and easily being balanced while walking. The walking robot comprises: four corner blocks for connecting each end of X-guides and Y-guides; X-travellers being capable of moving in the X-direction; Y-travellers being capable of moving in the Y-direction; an X-rod being pierced through the Y-travellers; a Y-rod being pierced through the X-travellers, the Y-rod being connected to the X-rod; X-driving means for moving; Y-driving means for moving the Y-travellers; Z-driving means for moving the corner blocks, the X-travellers and the Y-travellers in a Z-direction perpendicular to the X- and Y-directions, the Z-driving means being provided to the corner blocks, both ends of the X-rod and both ends of the Y-rod.

Abstract: A drive system comprises a pair of racks provided in a first direction, a pair of travellers, each of which is capable of moving in the first direction alongside each rack, a connecting member provided in a second direction perpendicular to the first direction, each end of the connecting member is fixed to each traveller, a pair of pinions, each of which engages with each rack and rolls thereon in the first direction, the pinions coaxially connected by a shaft, and a first motor for driving at least one of the travellers in the first direction, wherein the first motor is not mounted on the travellers and the connecting member. With this structure, the movable parts of the drive system are lightened so that high speed operation is made possible.

Abstract: An object of the present invention is to provide a two dimensional drive system having higher positioning accuracy. The drive system includes a pair of first linear guides provided in a first direction; a pair of second linear guides provided in a second direction; a pair of first travellers slidably engaged with the first linear guides; a pair of second travellers slidably engaged with the second linear guides; a first ball bearing screw rotatably spanned between the second travellers; a second ball bearing screw rotatably spanned between the first travellers; a slider screwed with the first and the second ball bearing screws, the slider being capable of moving on the ball bearing screws; a first and a second motors for driving each ball bearing screw; a first restrainer for restraining the inclination of the first ball bearing screw with respect to the first direction; and a second restrainer for restraining the inclination of the second ball bearing screw with respect to the second direction.

Abstract: The present invention relates to a two dimentional drive system. The drive system comprises a pair of guides provided on a base, the guides arranged in parallel in the X-direction; a rod arranged in the Y-direction, each end of the rod being slidably attached to the guides. A moving body is capable of moving on the rod. A first motor, which has a first shaft, is provided for rotating the first shaft. The first motor is provided to the base. A second motor, which has a second shaft, is provided for rotating the second shaft, the second motor is provided to the moving body. A first link includes a first end and a second end, the first end of the first link is connected to the first shaft. A second link includes a first end and a second end. The first end of the second link is connected to the second shaft. The second end of the second link is rotatably connected to the second end of the first link.