Patents by Inventor Toshiro Hirayama
Toshiro Hirayama 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: 12163825Abstract: A work machine includes: a load acquisition section which acquires a load of an object held by an attachment; and an estimative load determination part which determines, based on the load acquired by the load acquisition section, an estimative load of the object estimated to be discharged at a position above a destination in a discharge task when a predetermined estimative load determinative criterion is satisfied. The estimative load determinative criterion includes at least one of a criterion that a boom rising speed at which a boom rises in a rising direction reduces in a holding task, and a criterion that the boom rising speed reduces in a carrying task.Type: GrantFiled: September 2, 2020Date of Patent: December 10, 2024Assignee: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Toshiro Ueta, Michio Hirayama, Kazuomi Endo
-
Publication number: 20240301652Abstract: A work machine includes: a reference posture setting part which sets a reference posture which is one of postures of a working device in a holding task; an estimative load determination part which determines, based on a load acquired by a load acquisition section, an estimative load of an object of a work estimated to be discharged at a position above a loading destination in a discharge task when a predetermined estimative load determinative criterion is satisfied; an output part which outputs an estimative result which is information about the estimative load determined by the estimative load determination part. The estimative load determinative criterion includes a criterion that a posture change amount representing a changed degree of the posture of the working device from the reference posture is equal to or larger than a predetermined change amount threshold for determination of the estimative load.Type: ApplicationFiled: October 16, 2020Publication date: September 12, 2024Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Toshiro UETA, Michio HIRAYAMA, Kazuomi ENDO
-
Patent number: 12044227Abstract: An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.Type: GrantFiled: September 20, 2022Date of Patent: July 23, 2024Assignee: MAKITA CORPORATIONInventors: Toshiro Hirayama, Noriyuki Nishido, Tomohiro Hachisuka, Yasutoshi Kurokawa, Makito Teramoto
-
Patent number: 12023790Abstract: A driving tool comprises a cylinder extending in an up-down direction and a piston that moves downward within the cylinder due to a compressed gas to drive a driving member. The driving tool further comprises a main body housing that houses the cylinder and a grip extending rearward from a rear surface of the main body housing. The driving tool further comprises an upper chamber that is provided above the cylinder and communicates with the cylinder. The driving tool further comprises an air chamber that extends downward from the upper chamber and that extends only in an area on a right or left side of the main body housing with respect to both an axis center of the cylinder and an axis center of the grip.Type: GrantFiled: September 23, 2022Date of Patent: July 2, 2024Assignee: MAKITA CORPORATIONInventors: Kazusa Fukuda, Masaya Nagao, Kiyonobu Yoshikane, Toshiro Hirayama
-
Patent number: 12025764Abstract: An embedded-object scanner device includes a housing and a sensing device, which is housed in the housing and senses one or more embedded objects embedded in a target material when moved across the target material. One or more illumination devices is provided on the housing for illuminating at least a portion of the surface of the target material.Type: GrantFiled: December 28, 2022Date of Patent: July 2, 2024Assignee: MAKITA CORPORATIONInventors: Toshiro Hirayama, Hajime Takeuchi, Hikaru Sunabe
-
Patent number: 11981005Abstract: A rotary shaft is spline coupled to a carrier of a final-stage planetary gear mechanism. A bearing for supporting the rotary shaft is arranged on an outer circumferential side of the carrier. The bearing and the carrier are arranged so as to overlap in a direction perpendicular to a motor axis.Type: GrantFiled: September 27, 2022Date of Patent: May 14, 2024Assignee: MAKITA CORPORATIONInventors: Shun Kuriki, Masaya Nagao, Kiyonobu Yoshikane, Toshiro Hirayama
-
Publication number: 20230151803Abstract: An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.Type: ApplicationFiled: September 20, 2022Publication date: May 18, 2023Applicant: MAKITA CORPORATIONInventors: Toshiro HIRAYAMA, Noriyuki NISHIDO, Tomohiro HACHISUKA, Yasutoshi KUROKAWA, Makito TERAMOTO
-
Publication number: 20230140177Abstract: An embedded-object scanner device includes a housing and a sensing device, which is housed in the housing and senses one or more embedded objects embedded in a target material when moved across the target material. One or more illumination devices is provided on the housing for illuminating at least a portion of the surface of the target material.Type: ApplicationFiled: December 28, 2022Publication date: May 4, 2023Inventors: Toshiro HIRAYAMA, Hajime TAKEUCHI, Hikaru SUNABE
-
Publication number: 20230125450Abstract: A rotary shaft is spline coupled to a carrier of a final-stage planetary gear mechanism. A bearing for supporting the rotary shaft is arranged on an outer circumferential side of the carrier. The bearing and the carrier are arranged so as to overlap in a direction perpendicular to a motor axis.Type: ApplicationFiled: September 27, 2022Publication date: April 27, 2023Applicant: MAKITA CORPORATIONInventors: Shun KURIKI, Masaya NAGAO, Kiyonobu YOSHIKANE, Toshiro HIRAYAMA
-
Publication number: 20230129001Abstract: A driving tool comprises a cylinder extending in an up-down direction and a piston that moves downward within the cylinder due to a compressed gas to drive a driving member. The driving tool further comprises a main body housing that houses the cylinder and a grip extending rearward from a rear surface of the main body housing. The driving tool further comprises an upper chamber that is provided above the cylinder and communicates with the cylinder. The driving tool further comprises an air chamber that extends downward from the upper chamber and that extends only in an area on a right or left side of the main body housing with respect to both an axis center of the cylinder and an axis center of the grip.Type: ApplicationFiled: September 23, 2022Publication date: April 27, 2023Applicant: MAKITA CORPORATIONInventors: Kazusa FUKUDA, Masaya NAGAO, Kiyonobu YOSHIKANE, Toshiro HIRAYAMA
-
Patent number: 11543554Abstract: An embedded-object scanner device includes a sensing device housed in a housing and configured to sense one or more embedded objects embedded in a target material, and a display device provided on the housing. The display device is configured to collectively display multiple sets of display data generated in multiple sensing operations performed by the sensing device.Type: GrantFiled: February 25, 2020Date of Patent: January 3, 2023Assignee: MAKITA CORPORATIONInventors: Toshiro Hirayama, Hajime Takeuchi, Hikaru Sunabe
-
Publication number: 20200271814Abstract: An embedded-object scanner device includes a sensing device housed in a housing and configured to sense one or more embedded objects embedded in a target material, and a display device provided on the housing. The display device is configured to collectively display multiple sets of display data generated in multiple sensing operations performed by the sensing device.Type: ApplicationFiled: February 25, 2020Publication date: August 27, 2020Inventors: Toshiro HIRAYAMA, Hajime TAKEUCHI, Hikaru SUNABE
-
Patent number: 8579043Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.Type: GrantFiled: October 13, 2010Date of Patent: November 12, 2013Assignee: Makita CorporationInventors: Toshiro Hirayama, Shinji Onoda, Hitoshi Iida, Kenji Abe, Munetoshi Goto
-
Publication number: 20110088922Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.Type: ApplicationFiled: October 13, 2010Publication date: April 21, 2011Applicant: MAKITA CORPORATIONInventors: Toshiro HIRAYAMA, Shinji ONODA, Hitoshi IIDA, Kenji ABE, Munetoshi GOTO
-
Patent number: 7410009Abstract: It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includes a power tool body, a tool bit, a driving mechanism, a lubricant, an accommodating space, a passage and a lubricant leakage preventing region. The accommodating space is disposed in the body to house the driving mechanism and is hermetically sealed. The passage has an accommodating space side opening and an outside opening. The passage extends, starting from the accommodating space side opening, in a direction away from the outside opening. Then, the passage turns around and extends toward the outside opening. Further, the lubricant leakage preventing region is provided with the passage to prevent the lubricant from leaking from the inside to the outside of the accommodating space.Type: GrantFiled: June 1, 2006Date of Patent: August 12, 2008Assignee: Makita CorporationInventors: Toshiro Hirayama, Kenji Shibata, Takuo Arakawa, Yonosuke Aoki
-
Publication number: 20060272836Abstract: It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includes a power tool body, a tool bit, a driving mechanism, a lubricant, an accommodating space, a passage and a lubricant leakage preventing region. The accommodating space is disposed in the body to house the driving mechanism and is hermetically sealed. The passage has an accommodating space side opening and an outside opening. The passage extends, starting from the accommodating space side opening, in a direction away from the outside opening. Then, the passage turns around and extends toward the outside opening. Further, the lubricant leakage preventing region is provided with the passage to prevent the lubricant from leaking from the inside to the outside of the accommodating space.Type: ApplicationFiled: June 1, 2006Publication date: December 7, 2006Applicant: MAKITA CORPORATIONInventors: Toshiro Hirayama, Kenji Shibata, Takuo Arakawa, Yonosuke Aoki
-
Patent number: 6176321Abstract: A power-driven hammer drill 1 includes a rotary lever 8 for transmitting and disabling the transmission of the rotation of a motor 5 to a tool bit 4 and a slide lever 9 for transmitting and disabling the transmission of hammer blows to the tool bit 4. The rotary lever 8 is formed with a chamfer 52, whereas the slide lever 9 is formed with a straight portion 54 and a cut-out 53 which conforms to the circular edge of the rotary lever 8. When the slide lever 9 is in the lowermost position with the rotary lever 8 fitted in the cut-out 53, the rotary lever 8 is in the position to disconnect the rotation of the motor 5 to the tool bit 4, and while in this position, the slide lever 9 cannot be slid to its uppermost position, in which hammer blows cannot be transmitted to the tool bit 4.Type: GrantFiled: September 14, 1999Date of Patent: January 23, 2001Assignee: Makita CorporationInventors: Takuo Arakawa, Toshiro Hirayama, Shin Nakamura
-
Patent number: D466779Type: GrantFiled: March 18, 2002Date of Patent: December 10, 2002Assignee: Makita CorporationInventors: Yoshinori Shibata, Toshiro Hirayama, Kiyozumi Kokawa