Patents by Inventor Shuuji Hayashida
Shuuji Hayashida 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: 10673174Abstract: A digital measurement instrument with excellent environmental durability and at least a conventional level of usability including a main scale, a slider movable relative to the main scale, a displacement sensor configured to detect displacement or position of the slider in relation to the main scale, and a control circuit. The control circuit controls change between a normal measuring mode and an origin setting mode. The control circuit also sets and stores a first area, the first area being a preset predetermined range outside of a measurement range. The control circuit also changes operation mode from the normal measuring mode to the origin setting mode when the slider is detected to have stopped within the first area for a consecutive predetermined period of time. Additionally, the digital calipers are provided with no mechanical push button switches.Type: GrantFiled: April 30, 2018Date of Patent: June 2, 2020Assignee: Mitutoyo CorporationInventor: Shuuji Hayashida
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Publication number: 20180316120Abstract: A digital measurement instrument with excellent environmental durability and at least a conventional level of usability including a main scale, a slider movable relative to the main scale, a displacement sensor configured to detect displacement or position of the slider in relation to the main scale, and a control circuit. The control circuit controls change between a normal measuring mode and an origin setting mode. The control circuit also sets and stores a first area, the first area being a preset predetermined range outside of a measurement range. The control circuit also changes operation mode from the normal measuring mode to the origin setting mode when the slider is detected to have stopped within the first area for a consecutive predetermined period of time. Additionally, the digital calipers are provided with no mechanical push button switches.Type: ApplicationFiled: April 30, 2018Publication date: November 1, 2018Applicant: Mitutoyo CorporationInventor: Shuuji HAYASHIDA
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Patent number: 7395610Abstract: A digital indicator 1 includes a body case (10), a spindle (30) provided to the body case (10), the spindle (30) being movable in an axial direction, a displacement detector (40) that detects a moving amount of the spindle (30), and a digital display (50) that digitally displays the moving amount detected by the displacement detector (40). The display surface of the digital display (50) is arranged on the body case (10) in an attitude substantially orthogonal to the moving direction of the spindle (30) and deviated from the moving axis of the spindle (30).Type: GrantFiled: September 7, 2006Date of Patent: July 8, 2008Assignee: Mitutoyo CorporationInventors: Mikio Suzuki, Shuuji Hayashida, Toshiharu Ozeki, Rie Tanaka, Yoshifumi Saito
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Patent number: 7321231Abstract: A measuring instrument has a phase signal transmitter that transmits, in accordance with a rotation of the spindle, a phase signal that differs corresponding to the rotation angle of the spindle, and an arithmetic processor that arithmetically processes the phase signal to obtain the absolute position of the spindle. The phase signal transmitter transmits the phase signal at a predetermined pitch. Since the phase signal differs corresponding to the rotation angle of the spindle, a rotation angle of the spindle is uniquely determined by the phase signal. Unlike an increment type measuring instrument, since there is no concern that the signal will be skip-read, the spindle can be rotated at high speed, so that operational performance of the micrometer can be improved. Further, since there is no concern that the signal will be skip-read, the phase signal can be minutely varied with respect to the rotation of the spindle.Type: GrantFiled: July 17, 2006Date of Patent: January 22, 2008Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Shozaburo Tsuji, Yuji Fujikawa
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Publication number: 20070056183Abstract: A digital indicator 1 includes a body case (10), a spindle (30) provided to the body case (10), the spindle (30) being movable in an axial direction, a displacement detector (40) that detects a moving amount of the spindle (30), and a digital display (50) that digitally displays the moving amount detected by the displacement detector (40). The display surface of the digital display (50) is arranged on the body case (10) in an attitude substantially orthogonal to the moving direction of the spindle (30) and deviated from the moving axis of the spindle (30).Type: ApplicationFiled: September 7, 2006Publication date: March 15, 2007Applicant: MITUTOYO CORPORATIONInventors: Mikio Suzuki, Shuuji Hayashida, Toshiharu Ozeki, Rie Tanaka, Yoshifumi Saito
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Publication number: 20070018658Abstract: A measuring instrument has a phase signal transmitter (400) that transmits, in accordance with a rotation of the spindle (300), a phase signal that differs corresponding to the rotation angle of the spindle (300), and an arithmetic processor (500) that arithmetically processes the phase signal to obtain the absolute position of the spindle. The phase signal transmitter transmits the phase signal at a predetermined pitch. Since the phase signal differs corresponding to the rotation angle of the spindle (300), a rotation angle of the spindle (300) is uniquely determined by the phase signal. Unlike an increment type measuring instrument, since-there is no concern that the signal will be skip-read, the spindle (300) can be rotated at high speed, so that operational performance of the micrometer (100) can be improved. Further, since there is no concern that the signal will be skip-read, the phase signal can be minutely varied with respect to the rotation of the spindle (300).Type: ApplicationFiled: July 17, 2006Publication date: January 25, 2007Applicant: Mitutoyo CorporationInventors: Shuuji Hayashida, Shozaburo Tsuji, Yuji Fujikawa
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Patent number: 7045088Abstract: Components of a measuring tool such as a main beam (11) and a slider (12) of a caliper gauge (1) are formed by a synthetic resin containing carbon nanofiber and an electro-conductive electrode (15) is formed on the surface of the main beam (11) at a predetermined pitch, so that a production process can be simplified, rigidity of the components can be enhanced, linear expansion coefficient can be reduced, and anti-frictional properties can be improved, thus enhancing durability while improving measurement accuracy.Type: GrantFiled: November 12, 2004Date of Patent: May 16, 2006Assignee: Mitutoyo CorporationInventors: Sadayuki Matsumiya, Susumu Yoshioka, Shuuji Hayashida, Kouji Sasaki
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Patent number: 7043852Abstract: A measuring instrument that includes a tube 21 having a female thread 211 and a spindle 3 having a lead screw 31 screwing with the female thread 211 and capable of being advanced and retracted in an axial direction along with rotation around the axial center, and measures dimensions etc. of a workpiece according to displacement in an axial direction of the spindle 3 based on a rotation amount of the spindle 3. According to this measuring instrument, a pitch P of the lead screw 31 is twice as large or more than the difference between an external diameter R and a core diameter r thereof, and the difference between the external diameter R and the core diameter r is one-fifth or less of the external diameter R. Because of the lead screw 31 with the large pitch, the spindle 3 can be moved at high speed, thus enhancing operational performance of the measuring instrument.Type: GrantFiled: June 9, 2004Date of Patent: May 16, 2006Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Yuji Fujikawa, Yuichi Ichikawa, Osamu Saito, Nobuyuki Hayashi, Takahiro Nakamura, Yuuzou Hashimoto, Tomio Omori
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Patent number: 7020979Abstract: A stator (42) is hooked in a frame body (10) away with a prespecified space from a spindle (2), so that it is not necessary to fix the stator with a screw. The stator (42), therefore, can easily be mounted, and further as it is not necessary to provide a screw hole in the frame body (10), so that the need for waterproofing processing associated with a screw hole is eliminated. Further the stator (42) is hooked in a protrusion (53) of an electronic unit (50) inside the frame body (10) away with a prespecified space from the spindle (2), so that a rotation thereof in the peripheral direction of the spindle due to play and rattle is small and a measurement error can be suppressed.Type: GrantFiled: June 4, 2004Date of Patent: April 4, 2006Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Yuji Fujikawa, Yuichi Ichikawa, Osamu Saito, Takahiro Nakamura
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Patent number: 7013576Abstract: Provided is a measuring device 1 for measuring the size of an object comprising a body 2, and a spindle 3 which is screwed into the body 2 and axially advances and retracts by screwing with respect to the body 2, the measurement being based on the axial displacement of the spindle 3 effected by the revolution of the spindle, wherein the spindle is screwed into the body 2 via a multiple-start thread 31. Therefore, it is possible to displace the spindle 3 at a high speed, which improves the operability of the measuring device.Type: GrantFiled: December 26, 2002Date of Patent: March 21, 2006Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Kouji Sasaki, Yuichi Ichikawa, Osamu Saito, Seigo Takahashi, Masamichi Suzuki, Tetsuya Nakadoi, Masahiko Tachikake, Takahiro Nakamura, Masafumi Okamoto, Yuuzou Hashimoto
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Patent number: 6915591Abstract: A rotary movement converting mechanism for converting a rotary movement of a rotary body (43) into a linear movement of a movable body (2) has a support body (42) fixed to a body frame (3) and provided with a slit (42A) along an axial direction of the rotary body (43), a spiral groove (43A) formed on the inner circumference of the rotary body (43), and a top member (41) provided on the movable body (2). The top member (41) has an engaging member (41 A) inserted through the slit (42A) and having a tip end engaged with the spiral groove (43A), and a stop member (41C) for stopping the linear movement of the movable body (2) when a load is applied on the linear movement of the movable body (2). Accordingly, when a load is applied on the linear movement of the movable body (2), the linear movement is stopped and the minute displacement of the movable body (2) is restrained, thereby enhancing the stability of a measuring instrument in measuring a workpiece.Type: GrantFiled: December 9, 2003Date of Patent: July 12, 2005Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Yuji Fujikawa, Osamu Saito, Masamichi Suzuki
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Publication number: 20050081400Abstract: Components of a measuring tool such as a main beam (11) and a slider (12) of a caliper gauge (1) are formed by a synthetic resin containing carbon nanofiber and an electro-conductive electrode (15) is formed on the surface of the main beam (11) at a predetermined pitch, so that a production process can be simplified, rigidity of the components can be enhanced, linear expansion coefficient can be reduced, and anti-frictional properties can be improved, thus enhancing durability while improving measurement accuracy.Type: ApplicationFiled: November 12, 2004Publication date: April 21, 2005Applicant: Mitutoyo CorporationInventors: Sadayuki Matsumiya, Susumu Yoshioka, Shuuji Hayashida, Kouji Sasaki
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Patent number: 6834439Abstract: Components of a measuring tool such as a main beam (11) and a slider (12) of a caliper gauge (1) are formed by a synthetic resin containing carbon nanofiber and an electro-conductive electrode (15) is formed on the surface of the main beam (11) at a predetermined pitch, so that a production process can be simplified, rigidity of the components can be enhanced, linear expansion coefficient can be reduced, and anti-frictional properties can be improved, thus enhancing durability while improving measurement accuracy.Type: GrantFiled: May 19, 2003Date of Patent: December 28, 2004Assignee: Mitutoyo CorporationInventors: Sadayuki Matsumiya, Susumu Yoshioka, Shuuji Hayashida, Kouji Sasaki
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Publication number: 20040250439Abstract: A stator (42) is hooked in a frame body (10) away with a prespecified space from a spindle (2), so that it is not necessary to fix the stator with a screw. The stator (42), therefore, can easily be mounted, and further as it is not necessary to provide a screw hole in the frame body (10), so that the need for waterproofing processing associated with a screw hole is eliminated. Further the stator (42) is hooked in a protrusion (53) of an electronic unit (50) inside the frame body (10) away with a prespecified space from the spindle (2), so that a rotation thereof in the peripheral direction of the spindle due to play and rattle is small and a measurement error can be suppressed.Type: ApplicationFiled: June 4, 2004Publication date: December 16, 2004Applicant: MITUTOYO CORPORATIONInventors: Shuuji Hayashida, Yuji Fujikawa, Yuichi Ichikawa, Osamu Saito, Takahiro Nakamura
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Patent number: 6781265Abstract: A compact and simple linear actuator includes a spindle to a main body so as to be capable of moving in an axial direction, displacement detection device, a motor, and a transmission mechanism. The displacement detection device detects a movement displacement amount of the spindle. The motor is disposed adjacent a proximal end one of the spindle and on the same axis as the spindle. The transmission mechanism transmits turning force of the motor to the spindle. The transmission mechanism includes a first rotary member fitted to the proximal end of the spindle and integrally rotating with the spindle, a second rotary member fitted to a rotor of the motor, and connection rods for transmitting rotation of the second rotary member to the first rotary member. The connection rods have axes that are parallel to an axis of the spindle while being displaced from the spindle axis.Type: GrantFiled: September 19, 2002Date of Patent: August 24, 2004Assignee: Mitutoyo CorporationInventors: Shuuji Hayashida, Seigo Takahashi, Osamu Saito
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Publication number: 20040118004Abstract: A rotary movement converting mechanism for converting a rotary movement of a rotary body (43) into a linear movement of a movable body (2) has a support body (42) fixed to a body frame (3) and provided with a slit (42A) along an axial direction of the rotary body (43), a spiral groove (43A) formed on the inner circumference of the rotary body (43), and a top member (41) provided on the movable body (2). The top member (41) has an engaging member (41 A) inserted through the slit (42A) and having a tip end engaged with the spiral groove (43A), and a stop member (41C) for stopping the linear movement of the movable body (2) when a load is applied on the linear movement of the movable body (2). Accordingly, when a load is applied on the linear movement of the movable body (2), the linear movement is stopped and the minute displacement of the movable body (2) is restrained, thereby enhancing the stability of a measuring instrument in measuring a workpiece.Type: ApplicationFiled: December 9, 2003Publication date: June 24, 2004Applicant: MITUTOYO CORPORATIONInventors: Shuuji Hayashida, Yuji Fujikawa, Osamu Saito, Masamichi Suzuki
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Publication number: 20030217478Abstract: Components of a measuring tool such as a main beam (11) and a slider (12) of a caliper gauge (1) are formed by a synthetic resin containing carbon nanofiber and an electro-conductive electrode (15) is formed on the surface of the main beam (11) at a predetermined pitch, so that a production process can be simplified, rigidity of the components can be enhanced, linear expansion coefficient can be reduced, and anti-frictional properties can be improved, thus enhancing durability while improving measurement accuracy.Type: ApplicationFiled: May 19, 2003Publication date: November 27, 2003Applicant: MITUTOYO CORPORATIONInventors: Sadayuki Matsumiya, Susumu Yoshioka, Shuuji Hayashida, Kouji Sasaki
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Publication number: 20030121169Abstract: Provided is a measuring device 1 for measuring the size of an object comprising a body 2, and a spindle 3 which is screwed into the body 2 and axially advances and retracts by screwing with respect to the body 2, the measurement being based on the axial displacement of the spindle 3 effected by the revolution of the spindle, wherein the spindle is screwed into the body 2 via a multiple-start thread 31. Therefore, it is possible to displace the spindle 3 at a high speed, which improves the operability of the measuring device.Type: ApplicationFiled: December 26, 2002Publication date: July 3, 2003Applicant: Mitutoyo CorporationInventors: Shuuji Hayashida, Kouji Sasaki, Yuichi Ichikawa, Osamu Saito, Seigo Takahashi, Masamichi Suzuki, Tetsuya Nakadoi, Masahiko Tachikake, Takahiro Nakamura, Masafumi Okamoto, Yuuzou Hashimoto
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Patent number: 6553685Abstract: A measuring instrument includes a spindle (11) provided to a body (1), a sleeve (31) movable in the same direction as the spindle and stoppable at a desired position, a connector (41) for connecting the sleeve and the spindle and allowing relative movement of the sleeve and the spindle in the moving direction thereof by a predetermined stroke; a pressure spring (61) accommodated in the sleeve for biasing the spindle in a direction for the spindle to abut to the workpiece through the connector, and a biasing force indicator (71) for indicating the pressure spring.Type: GrantFiled: July 23, 2001Date of Patent: April 29, 2003Assignee: Mitutoyo CorporationInventors: Shingo Nishina, Masahiko Tachikake, Yoshiaki Shiraishi, Rie Tanaka, Shuuji Hayashida, Yoshitaka Kuji, Osamu Saito, Tetsuya Nakadoi
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Publication number: 20030052550Abstract: A compact and simple linear actuator includes a spindle to a main body so as to be capable of moving in an axial direction, displacement detection device, a motor, and a transmission mechanism. The displacement detection device detects a movement displacement amount of the spindle. The motor is disposed adjacent a proximal end one of the spindle and on the same axis as the spindle. The transmission mechanism transmits turning force of the motor to the spindle. The transmission mechanism includes a first rotary member fitted to the proximal end of the spindle and integrally rotating with the spindle, a second rotary member fitted to a rotor of the motor, and connection rods for transmitting rotation of the second rotary member to the first rotary member. The connection rods have axes that are parallel to an axis of the spindle while being displaced from the spindle axis.Type: ApplicationFiled: September 19, 2002Publication date: March 20, 2003Applicant: Mitutoyo CorporationInventors: Shuuji Hayashida, Seigo Takahashi, Osamu Saito