Patents by Inventor Kazuyuki Yamazaki
Kazuyuki Yamazaki 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).
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Patent number: 7942355Abstract: A self-traveling crushing machine includes: a traveling device; a crushing device that is provided on the traveling device and crushes a to-be-crushed object supplied; an overload escaping section that escapes an overload of the crushing device; and a controller that controls the crushing device. In the self-traveling crushing machine, the crushing device is a jaw crusher in which the to-be-crushed object is supplied to a V-shaped space formed by a fixed jaw and a movable jaw and the movable jaw swings relative to the fixed jaw to crush the to-be-crushed object, and the controller includes: an escape-operation determining section that determines whether or not the overload escaping section has operated; and an information output section that sends the escape operation information to an outside when the escape-operation determining section determines that the escape operation has been conducted.Type: GrantFiled: May 9, 2007Date of Patent: May 17, 2011Assignee: Komatsu Ltd.Inventors: Kazuyuki Yamazaki, Yukinori Maeda, Ryoichi Togashi, Yasutaka Nishida, Hiroshi Yoshida
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Publication number: 20090114750Abstract: A self-traveling crushing machine includes: a traveling device; a crushing device that is provided on the traveling device and crushes a to-be-crushed object supplied; an overload escaping section that escapes an overload of the crushing device; and a controller that controls the crushing device. In the self-traveling crushing machine, the crushing device is a jaw crusher in which the to-be-crushed object is supplied to a V-shaped space formed by a fixed jaw and a movable jaw and the movable jaw swings relative to the fixed jaw to crush the to-be-crushed object, and the controller includes: an escape-operation determining section that determines whether or not the overload escaping section has operated; and an information output section that sends the escape operation information to an outside when the escape-operation determining section determines that the escape operation has been conducted.Type: ApplicationFiled: May 9, 2007Publication date: May 7, 2009Inventors: Kazuyuki Yamazaki, Yukinori Maeda, Ryoichi Togashi, Yasutaka Nishida, Hiroshi Yoshida
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Patent number: 7303159Abstract: A crushing control apparatus for a shearing crusher, which properly controls the crusher in accordance with kinds of objects to be crushed and is capable of reliably preventing stop of operation due to excessive load, clogging and the like, is provided. For this purpose, the crushing control apparatus includes a mode selecting switch (59) for selecting a mode according to each kind of the objects to be crushed, a ROM (33a) for storing a control condition of the rotary shafts (11, 11), which conforms to the mode for each of the mode, and a controller (33), which reads out the control condition corresponding to a selected mode from the ROM, when the predetermined mode is selected by the mode selecting switch, and controls the rotary shafts to be in the control condition which is read out.Type: GrantFiled: March 18, 2004Date of Patent: December 4, 2007Assignee: Komatsu Ltd.Inventors: Tooru Hishiyama, Toshio Kitani, Eiichi Muramoto, Takuya Uemura, Kazuyuki Yamazaki, Shimpei Abe
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Patent number: 6932171Abstract: A ground drilling machine comprises a controller for automatically controlling the injection of working liquid according to the output signal output as a function of the rotating condition of the pilot head 20. When the pilot head 20 is driven forward or backward, working liquid can be injected by switching the working liquid transfer valve 111 so long as the pilot head 20 is revolving in order to improve the digging efficiency, the soil delivering efficiency and the cooling efficiency of the machine. The injection of working liquid can be suspended when the direction of propelling the pilot head 20 is shifted while stopping the revolution of the pilot head 20 because no working liquid is required for delivering the dug soil and cooling the leading body. Thus, working liquid can be injected always at an optimal rate depending on the rotating condition of the pilot head 20 to suppress any waste of working liquid and reduce the construction cost.Type: GrantFiled: June 2, 2003Date of Patent: August 23, 2005Assignee: Komatsu Ltd.Inventors: Toyohiko Youan, Kentaro Watanabe, Eiichi Muramoto, Kazuyuki Yamazaki
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Publication number: 20040200914Abstract: A load display device for a crusher, which is capable of efficiently performing crushing work by making an operator recognize a load condition, is provided. For this purpose, the load display device for the crusher, which displays the load condition at a crushing section in the crusher, includes a monitor (30) provided at a location which the operator is able to recognize visually, and a screen (31) which is provided on the monitor (30) and graphically displays a condition of a load at a crushing section (4A).Type: ApplicationFiled: March 18, 2004Publication date: October 14, 2004Applicant: KOMATSU LTD.Inventors: Tooru Hishiyama, Toshio Kitani, Eiichi Muramoto, Takuya Uemura, Kazuyuki Yamazaki, Shimpei Abe
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Publication number: 20040200911Abstract: A crushing control apparatus for a shearing crusher, which properly controls the crusher in accordance with kinds of objects to be crushed and is capable of reliably preventing stop of operation due to excessive load, clogging and the like, is provided. For this purpose, the crushing control apparatus includes a mode selecting switch (59) for selecting a mode according to each kind of the objects to be crushed, a ROM (33a) for storing a control condition of the rotary shafts (11, 11), which conforms to the mode for each of the mode, and a controller (33), which reads out the control condition corresponding to a selected mode from the ROM, when the predetermined mode is selected by the mode selecting switch, and controls the rotary shafts to be in the control condition which is read out.Type: ApplicationFiled: March 18, 2004Publication date: October 14, 2004Applicant: KOMATSU LTD.Inventors: Tooru Hishiyama, Toshio Kitani, Eiichi Muramoto, Takuya Uemura, Kazuyuki Yamazaki, Shimpei Abe
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Publication number: 20030226691Abstract: A ground drilling machine comprises a controller for automatically controlling the injection of working liquid according to the output signal output as a function of the rotating condition of the pilot head 20. When the pilot head 20 is driven forward or backward, working liquid can be injected by switching the working liquid transfer valve 111 so long as the pilot head 20 is revolving in order to improve the digging efficiency, the soil delivering efficiency and the cooling efficiency of the machine. The injection of working liquid can be suspended when the direction of propelling the pilot head 20 is shifted while stopping the revolution of the pilot head 20 because no working liquid is required for delivering the dug soil and cooling the leading body. Thus, working liquid can be injected always at an optimal rate depending on the rotating condition of the pilot head 20 to suppress any waste of working liquid and reduce the construction cost.Type: ApplicationFiled: June 2, 2003Publication date: December 11, 2003Applicant: KOMATSU LTD.Inventors: Toyohiko Youan, Kentaro Watanabe, Eiichi Muramoto, Kazuyuki Yamazaki
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Patent number: 6637525Abstract: A ground drilling machine includes a machine body a rod propelling device, a rod exchanging device and a support unit provided for the machine body for supporting the rod exchanging device. The rod propelling device has a frame movably mounted to the machine body. The frame is slidable on a support portion provided for the machine body. The rod exchanging device is attached to the frame of the rod propelling device via a transverse mounting member. The rod exchanging device is also supported on the support unit so as to be slidable on the support unit along with the movement of the rod propelling device without changing of its relative position to the rod propelling device. The rod exchanging device can be made light and compact because the rod exchanging device is supported by the support unit which is provided for the machine body and accordingly a large bending load is not applied to the main body portion of the rod exchanging device.Type: GrantFiled: November 19, 2001Date of Patent: October 28, 2003Assignee: Komatsu Ltd.Inventors: Kentaro Watanabe, Toyohiko Youan, Kazuyuki Yamazaki, Tooru Hishiyama
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Patent number: 6535414Abstract: A semiconductor storage device with high integration is capable of performing high speed access. The semiconductor storage device is constituted in such a way that it causes one contact to be connected with a primary bit-line, further it causes four sub bit-lines to be connected through four bank selection transistor, furthermore, it causes one contact to be connected to a virtual GND line, moreover, it causes two sub bit-lines to be connected through two bank selection transistors. The respective sub bit-lines are arranged in parallel to signal inputted to six bank selection lines, and in parallel to primary bit-line. Two virtual GND lines which are arranged at right and left of the primary bit-line. The memory cell transistor is capable of being selected according to combination of level of the two virtual GND lines. This causes bank selection lines to be reduced, further it causes cell array to be shortened in bit direction, furthermore, it causes cell array area to be reduced.Type: GrantFiled: October 22, 2001Date of Patent: March 18, 2003Assignee: NEC CorporationInventors: Junnichi Suzuki, Kazuyuki Yamazaki
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Patent number: 6419172Abstract: A mobile crusher, which has a high-quality controlling function enabling an efficient production, and which is capable of preventing the crusher itself from being damaged, is provided. For this purpose, a mobile crusher having a feeder (3) and a crusher member (4) which are set drivably on a mobile vehicle body (1), includes means (7) for detecting an amount of a material to be crushed, which detects an amount (H) of a material (6a) to be crushed inside the crusher member (4), and control means (10) for receiving the amount H from the means (7) for detecting the amount of the material to be crushed and controlling a driving speed V of the feeder (3) changeably based on the reception amount H.Type: GrantFiled: September 20, 2000Date of Patent: July 16, 2002Assignee: Komatsu Ltd.Inventors: Kazuyuki Yamazaki, Satoru Koyanagi, Yasutaka Nishida, Katsuhiro Ikegami, Tooru Nakayama, Motoki Kurohara
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Publication number: 20020062994Abstract: A ground drilling machine comprises a machine body, a rod propelling device having a frame structure mounted to the machine body, a rod exchanging device mounted to the frame structure of the rod propelling device, and a support unit provided for the machine body for supporting the rod exchanging device. According to such structure, the ground drilling machine can be made light and compact.Type: ApplicationFiled: November 19, 2001Publication date: May 30, 2002Inventors: Kentaro Watanabe, Toyohiko Youan, Kazuyuki Yamazaki, Tooru Hishiyama
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Publication number: 20020036913Abstract: A semiconductor storage device with high integration is capable of performing high speed access. The semiconductor storage device is constituted in such a way that it causes one contact to be connected with a primary bit-line, further it causes four sub bit-lines to be connected through four bank selection transistor, furthermore, it causes one contact to be connected to a virtual GND line, moreover, it causes two sub bit-lines to be connected through two bank selection transistors. The respective sub bit-lines are arranged in parallel to signal inputted to six bank selection lines, and in parallel to primary bit-line. Two virtual GND lines which are arranged at right and left of the primary bit-line. The memory cell transistor is capable of being selected according to combination of level of the two virtual GND lines. This causes bank selection lines to be reduced, further it causes cell array to be shortened in bit direction, furthermore, it causes cell array area to be reduced.Type: ApplicationFiled: October 22, 2001Publication date: March 28, 2002Inventors: Junnichi Suzuki, Kazuyuki Yamazaki
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Patent number: 6333867Abstract: A semiconductor storage device with high integration is capable of performing high speed access. The semiconductor storage device is constituted in such a way that it causes one contact to be connected with a primary bit-line, further it causes four sub bit-lines to be connected through four bank selection transistor, furthermore, it causes one contact to be connected to a virtual GND line, moreover, it causes two sub bit-lines to be connected through two bank selection transistors. The respective sub bit-lines are arranged in parallel to signal inputted to six bank selection lines, and in parallel to primary bit-line. Two virtual GND lines which are arranged at right and left of the primary bit-line. The memory cell transistor is capable of being selected according to combination of level of the two virtual GND lines. This causes bank selection lines to be reduced, further it causes cell array to be shortened in bit direction, furthermore, it causes cell array area to be reduced.Type: GrantFiled: June 22, 2000Date of Patent: December 25, 2001Assignee: NEC CorporationInventors: Junnichi Suzuki, Kazuyuki Yamazaki
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Patent number: 6004023Abstract: A soil refining machine having a crushing and mixing unit (A), an earth and sand material delivery unit (B) for supplying earth and sand material into the crushing and mixing unit and a soil refining material delivery unit (C) for supplying soil refining material into the crushing and mixing unit is provided with a control apparatus. The control apparatus includes: a sensing unit (31) for detecting a supply rate of the earth and sand material being supplied by the earth and sand material delivery unit; a first setting unit (47) for optionally establishing a supply rate of the soil refining material to be supplied by the soil material delivery unit; and a control unit (43) responsive to both the rate established by the first setting unit and the rate detected by the sensing unit for controlling an actual supply rate of the soil refining material being supplied by the soil refining material delivery unit.Type: GrantFiled: February 9, 1998Date of Patent: December 21, 1999Assignee: Komatsu Ltd.Inventors: Satoru Koyanagi, Kazuyuki Yamazaki, Hiroshi Shimizu
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Patent number: 5793666Abstract: To make a memory system highly integrated, a memory system includes a memory cell array including a first unit block and a second unit block having a plurality of read-only memory (ROM) cells, a plurality of diffused lines having a first pitch with respect to each other, and connected to sources of the ROM cells, first and second bit lines made of metal and respectively connected to drains of the ROM cells in the first and second unit blocks, and first and second source lines made of metal and respectively connected to sources of the ROM cells in the first and second unit blocks. A pitch between the first bit line and the first source line is a first pitch and a pitch between the first bit line and the second source line, and a pitch between the second bit line and the second source line are a second pitch. The second pitch is at least three times larger than the first pitch.Type: GrantFiled: March 25, 1997Date of Patent: August 11, 1998Assignee: NEC CorporationInventor: Kazuyuki Yamazaki
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Patent number: 5699873Abstract: When a longitudinal straight traveling mode position A, an oblique traveling mode position B, a transverse traveling mode position C, or spin turning mode position D is selected by a traveling mode changeover switch 21, a signal corresponding to the selection is input to a controller 27. The controller outputs signals to turning actuators 15a and 15b for orienting driving wheels 11a and 11b toward the selected position. With this signal, the turning actuators 15a and 15b cause turning of the driving wheels 11a and 11b. At the same time, turning angle detection sensors 16a and 16b input signal indicative of turning angle of the driving wheels. When the turning angle becomes coincident with a preliminarily set angle, a signal for terminating turning is output to the turning actuators 15a and 15b. By this control, turning action of the turning actuators 15a and 15b is terminated with setting the driving wheels 11a and 11b at the position of the selected orientation.Type: GrantFiled: October 31, 1996Date of Patent: December 23, 1997Assignee: Kabushiki Kaisha Komatsu SeisakushoInventors: Yukio Moriya, Satoru Koyanagi, Tetsuya Fujimura, Masayuki Nagahama, Kazuyuki Yamazaki, Toru Hishiyama
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Patent number: 5609220Abstract: When a longitudinal straight traveling mode position A, an oblique traveling mode position B, a transverse traveling mode position C, or spin turning mode position D is selected by a traveling mode changeover switch 21, a signal corresponding to the selection is input to a controller 27. The controller outputs signals to turning actuators 15a and 15b for orienting driving wheels 11a and 11b toward the selected position. With this signal, the turning actuators 15a and 15b causes turning of the driving wheels 11a and 11b. At the same time, turning angle detection sensors 16a and 16b input signals indicative of turning angle of the driving wheels. When the turning angle becomes coincident with a preliminarily set angle, a signal for terminating turning is output to the turning actuators 15a and 15b. By this control, turning action of the turning actuators 15a and 15b is terminated with setting the driving wheels 11a and 11b at the position of the selected orientation.Type: GrantFiled: February 2, 1995Date of Patent: March 11, 1997Assignee: Kabushiki Kaisha Komatsu SeisakushoInventors: Yukio Moriya, Satoru Koyanagi, Tetsuya Fujimura, Masayuki Nagahama, Kazuyuki Yamazaki, Toru Hishiyama
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Patent number: 5556351Abstract: A differential apparatus includes a differential casing (21) rotated by an engine drive power; pinion gears (51, 53) slidably and rotatably accommodated in accommodating holes (47, 49) formed in the differential casing (21); a pair of side gears (31, 33) linked with each other via the pinion gears, for transmitting the engine drive power to vehicle wheels differentially; and device (69, 73, 81, 91, 99, 101, 103, 107, 109) for supplying lubricant to sliding surfaces between inner walls of the accommodating holes and the pinion gears.Type: GrantFiled: April 28, 1994Date of Patent: September 17, 1996Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Kenji Hiraishi, Shingo Saeki, Kazuyuki Yamazaki, Takao Nakajima