Patents by Inventor Tamotsu Shiwaku
Tamotsu Shiwaku has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7972104Abstract: A lower buffer 6 is placed under a traveling rail for an overhead traveling vehicle 16, and a side buffer 8 is provided on a side of the traveling rail. The overhead traveling vehicle 16 has a hoisting frame 30, and a lateral feeding unit 24 for laterally feeding the hoisting frame 30.Type: GrantFiled: March 30, 2006Date of Patent: July 5, 2011Assignee: Murata Kikai Kabushiki KaishaInventors: Tamotsu Shiwaku, Takashi Nakao
-
Patent number: 7644664Abstract: Guide tracks 56, 56 projecting in a vertical direction are provided in a right and left of a running track 50 and left and right guide rollers 20, 21 are provided on a track guided vehicle and guided using inner surfaces of the left and right guide tracks. Branching rollers 22, 23 each comprising elevating and lowering means are provided in the right and left of the track guided vehicle and outside the right and left guide tracks. Thus, branching and rectilinear progression of the track guided vehicle is controlled by switching between a state where the branching rollers 22, 23 are elevated or lowered to guide the track guided vehicle using outer surfaces of the guide tracks 56, 56 and a state where the branching rollers 22, 23 do not contact with the outer surfaces.Type: GrantFiled: November 17, 2004Date of Patent: January 12, 2010Assignee: Murata Kikai Kabushiki KaishaInventors: Takashi Nakao, Tamotsu Shiwaku, Yoichi Nakamura, Isao Fukuda, Ryosuke Tahara
-
Patent number: 7578240Abstract: Buffers 6, 8 are provided on both sides of a travel rail 10. An overhead traveling vehicle 4 has a SCARA arm movable back and forth to both of the left and right so that a rotation unit 22 and an elevation drive unit 4 can move to a position above either of the buffers 6, 8.Type: GrantFiled: January 10, 2007Date of Patent: August 25, 2009Assignee: Murata Kikai Kabushiki KaishaInventor: Tamotsu Shiwaku
-
Patent number: 7558645Abstract: A height sensor 26 and an image recognizing section 28 are installed in a teaching unit 24; the height sensor 26 contacts a pin 30a on a load port 4 to detect the height position of the pin 30a and the image recognizing section 28 recognizes a pin 30c and thus its horizontal plane position. A platform 16 of an overhead travelling carriage 8 grips and lowers the teaching unit 24 toward the load port 4. The height sensor 26 then detects the height of the load port 4. Then, the teaching unit 24 is slightly raised. The horizontal plane position of the pin 30c is recognized and averaged over a time equal to at least the vibration period of the platform 16. As a result, the position of the load port can be accurately taught to the overhead travelling carriage 8 without preparations such as the installation of marks on the load port.Type: GrantFiled: October 7, 2005Date of Patent: July 7, 2009Assignee: Murato Kikai Kabushiki KaishaInventors: Tamotsu Shiwaku, Takashi Nakao, Isao Fukuda, Kazuro Ueshima
-
Patent number: 7461598Abstract: A loop-shaped maintenance bay route 6 directly connected to an inter-bay route 4 is provided for the maintenance of an overhead traveling vehicle 8. An operation check traveling line 16 and an operation check station 18 are provided along the maintenance bay route 6 for fully carrying out tests for traveling operation and transfer operation of the overhead traveling vehicle 8. In an adjustment/repair area 14, adjustment, configuration, repair, reconfiguration, or the like of the overhead traveling vehicle 8 are performed.Type: GrantFiled: April 12, 2006Date of Patent: December 9, 2008Assignee: Murata Kikai Kabushiki KaishaInventor: Tamotsu Shiwaku
-
Publication number: 20070163461Abstract: Buffers 6, 8 are provided on both sides of a travel rail 10. An overhead traveling vehicle 4 has a SCARA arm movable back and forth to both of the left and right so that a rotation unit 22 and an elevation drive unit 4 can move to a position above either of the buffers 6, 8.Type: ApplicationFiled: January 10, 2007Publication date: July 19, 2007Applicant: MURATA KIKAI KABUSHIKI KAISHAInventor: Tamotsu Shiwaku
-
Publication number: 20060230975Abstract: A loop-shaped maintenance bay route 6 directly connected to an inter-bay route 4 is provided for the maintenance of an overhead traveling vehicle 8. An operation check traveling line 16 and an operation check station 18 are provided along the maintenance bay route 6 for fully carrying out tests for traveling operation and transfer operation of the overhead traveling vehicle 8. In an adjustment/repair area 14, adjustment, configuration, repair, reconfiguration, or the like of the overhead traveling vehicle 8 are performed.Type: ApplicationFiled: April 12, 2006Publication date: October 19, 2006Applicant: MURATA KIKAI KABUSHIKI KAISHAInventor: Tamotsu Shiwaku
-
Publication number: 20060222479Abstract: A lower buffer 6 is placed under a traveling rail for an overhead traveling vehicle 16, and a side buffer 8 is provided on a side of the traveling rail. The overhead traveling vehicle 16 has a hoisting frame 30, and a lateral feeding unit 24 for laterally feeding the hoisting frame 30.Type: ApplicationFiled: March 30, 2006Publication date: October 5, 2006Applicant: MURATA KIKAI KABUSHIKI KAISHAInventors: Tamotsu Shiwaku, Takashi Nakao
-
Publication number: 20060161304Abstract: A height sensor 26 and an image recognizing section 28 are installed in a teaching unit 24; the height sensor 26 contacts a pin 30a on a load port 4 to detect the height position of the pin 30a and the image recognizing section 28 recognizes a pin 30c and thus its horizontal plane position. A platform 16 of an overhead travelling carriage 8 grips and lowers the teaching unit 24 toward the load port 4. The height sensor 26 then detects the height of the load port 4. Then, the teaching unit 24 is slightly raised. The horizontal plane position of the pin 30c is recognized and averaged over a time equal to at least the vibration period of the platform 16. As a result, the position of the load port can be accurately taught to the overhead travelling carriage 8 without preparations such as the installation of marks on the load port.Type: ApplicationFiled: October 7, 2005Publication date: July 20, 2006Applicant: Murata Kikai Kabushiki KaishaInventors: Tamotsu Shiwaku, Takashi Nakao, Isao Fukuda, Kazuro Ueshima
-
Publication number: 20050139114Abstract: Guide tracks 56, 56 projecting in a vertical direction are provided in a right and left of a running track 50 and left and right guide rollers 20, 21 are provided on a track guided vehicle and guided using inner surfaces of the left and right guide tracks. Branching rollers 22, 23 each comprising elevating and lowering means are provided in the right and left of the track guided vehicle and outside the right and left guide tracks. Thus, branching and rectilinear progression of the track guided vehicle is controlled by switching between a state where the branching rollers 22, 23 are elevated or lowered to guide the track guided vehicle using outer surfaces of the guide tracks 56, 56 and a state where the branching rollers 22, 23 do not contact with the outer surfaces.Type: ApplicationFiled: November 17, 2004Publication date: June 30, 2005Applicant: MURATA KIKAI KABUSHIKI KAISHAInventors: Takashi Nakao, Tamotsu Shiwaku, Yoichi Nakamura, Isao Fukuda, Ryosuke Tahara
-
Patent number: 6374748Abstract: A guide rail 2 having cables for non-contact power feeding is laid on a floor 22 in a clean room, and the guide rail 2 serves to guide each of guide rollers 60 of a tracking cart 4, and the cable serves to feed electrical power to a pickup coil of a tracking cart 4. This construction gives a tracking cart system that is easy to construct and easy to alter a layout thereof and is structurally compact and intrinsically clean.Type: GrantFiled: October 26, 2000Date of Patent: April 23, 2002Assignee: Murata Kikai Kabushiki KaishaInventors: Tamotsu Shiwaku, Isamu Matsui, Takashi Nakao
-
Patent number: 6267259Abstract: A through-hole 14 is provided in a body base 12 of an overhead travelling carriage to guide a roller on an elevating and lowering drive section 6. In addition, a pair of holes are provided at the both running-direction ends of the elevating and lowering drive section 6 to guide rollers on position control sections 16, 16. The pair of position control sections 16, 16 independently move these rollers perpendicularly to a running direction. A simple mechanism can be used to move an elevating and lowering section of the overhead travelling carriage perpendicularly to the running direction and to rotationally move it in a horizontal direction so as to reach a station.Type: GrantFiled: December 22, 1999Date of Patent: July 31, 2001Assignee: Murata Kikai Kabushiki KaishaInventor: Tamotsu Shiwaku
-
Patent number: 6224313Abstract: To provide an automatic warehouse that can elevate and lower an elevating rail stably even if racks are high, and that allows effective use of the space between the racks for maintenance. Elevation drive sections for an elevating rail 3 are provided near the respective ends of one of racks 1 and 2, a rope 40 attached to a rail-supporting member 12 is wound around a drum 22, and a counterweight 24 is used to balance the effect of gravity in order to elevate and lower a rail 3. A travelling cart 4 travels on the rail 3, and the rotation of a turntable 5 and the rotation of arms 6 and 7 and a hand 11 are used to load and unload an article on and from the rack 1 or 2.Type: GrantFiled: March 31, 1998Date of Patent: May 1, 2001Assignee: Murata Kikai Kabushiki KaishaInventors: Masazumi Fukushima, Tamotsu Shiwaku
-
Patent number: 6183184Abstract: A work transport system having an overhead travelling carriage that runs along a rail arranged near the ceiling, arranged with a storage rack member upon which work may be loaded, between the floor and the rail. As the storage rack member upon which work may be loaded is arranged between the floor and the rail, the space of the processing station and floor may be decreased and the transfer time of the work by the overhead travelling carriage may be reduced.Type: GrantFiled: July 9, 1997Date of Patent: February 6, 2001Assignee: Murata Machinery, Ltd.Inventor: Tamotsu Shiwaku
-
Patent number: 5803278Abstract: An overhead travelling carriage is provided wherein three drums are arranged on a base of a hoist unit along the sides of an imaginary equilateral triangle. Two motors and a brake are arranged along imaginary lines which join the imaginary center of the imaginary equilateral triangle where a hypoid gear of the hoist unit is positioned and the imaginary apices of the imaginary equilateral triangle. The rotation of the hypoid gear is transmitted to a spur gear on the drum side of the spur gear in order to drive the drum. As a result, the hoist unit of the overhead travelling carriage may be reduced in size.Type: GrantFiled: August 30, 1996Date of Patent: September 8, 1998Assignee: Murata Kikai Kabushiki KaishaInventor: Tamotsu Shiwaku
-
Patent number: 5765703Abstract: Three suspension points 20-22 are arranged in the shape of an equilateral triangle on a vertically movable table 16 and two cables 23-28 are attached to each. Three pairs of hoist members 10/11/12 are arranged on the main body 4, and each hoists a cable from two suspension points.While preventing oscillation and twist of the vertically movable table and making guide poles unnecessary, high speed vertical rising and lowering is possible.Type: GrantFiled: August 1, 1997Date of Patent: June 16, 1998Assignee: Murata Kikai Kabushiki KaishaInventor: Tamotsu Shiwaku