Patents by Inventor Junichi Iwakami
Junichi Iwakami 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: 11833640Abstract: A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.Type: GrantFiled: September 28, 2022Date of Patent: December 5, 2023Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Hideharu Muto, Ryosuke Otani
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Patent number: 11744419Abstract: A cleaner reduces noise. The cleaner includes a motor assembly including a motor and a fan rotatable about a rotation axis with a rotational force generated by the motor, a cover surrounding the motor assembly, a guide that guides air from the fan at least partially to an outer surface of the cover, and a rib assembly that guides the air guided by the guide at least partially in a circumferential direction about the rotation axis along the outer surface of the cover.Type: GrantFiled: May 26, 2021Date of Patent: September 5, 2023Assignee: MAKITA CORPORATIONInventor: Junichi Iwakami
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Publication number: 20230263349Abstract: A vacuum cleaner includes: a main-body assembly, which has a suction port; and a filter assembly, at least a portion of which is disposed more forward than the main-body assembly so as to oppose the suction port. The filter assembly includes: a support frame; a filter, which is supported on the support frame; and a retaining-rib member, which is inserted, from the front, into one or more grooves provided on the main-body assembly, the retaining-rib member being fixed to the support frame.Type: ApplicationFiled: February 2, 2023Publication date: August 24, 2023Inventors: Kosuke KOMIYA, Junichi IWAKAMI
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Publication number: 20230263352Abstract: A vacuum cleaner includes: an inlet pipe; and a lock mechanism that fixes an extension pipe, which is connected to the inlet pipe. The lock mechanism includes a pipe-lock lever, which has a pipe-hook part that is hooked into a pipe-recess part provided on the extension pipe. The pipe-lock lever also has a main-body part, which is disposed on an upper portion of the inlet pipe and on which the pipe-hook part is disposed, and one or more projection parts, which project(s) laterally from a side portion or side portions of the main-body part.Type: ApplicationFiled: February 2, 2023Publication date: August 24, 2023Inventors: Kosuke KOMIYA, Junichi IWAKAMI
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Publication number: 20230264131Abstract: A cyclonic, dust-collecting unit includes: one or more air swirling members, which swirl(s) air; a dust cap, into which air that has passed through the swirling member(s) flows; and a filter unit, through which air that flows out of the dust cap passes. The filter unit includes: a prefilter; a sound-absorbing member, through which air that has passed through the prefilter flows; and a post filter, through which air that has passed through the sound-absorbing member flows.Type: ApplicationFiled: February 2, 2023Publication date: August 24, 2023Inventors: Kosuke KOMIYA, Junichi IWAKAMI, Kentaro NAKAHARA
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Patent number: 11653802Abstract: A cleaner reduces noise. The cleaner includes a motor, a fan including a number Z of blades and rotatable at a rotational speed N, indicating revolutions per minute, about a rotation axis by the motor, a cover having an inlet located frontward from the fan, and a number V of ribs located in the inlet. The ribs extend in a radial direction from the rotation axis and are arranged in a circumferential direction about the rotation axis. The fan is rotatable to produce noise having a frequency fNZ of 20,000 Hz or higher, and fNZ=(m?k×V)×N/60 and m=n×Z+k×V, where n is an order, m is an integer, and k is an integer.Type: GrantFiled: August 23, 2021Date of Patent: May 23, 2023Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Yuta Kawai
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Patent number: 11647884Abstract: A cleaner includes a main body, a handle, a first switch member, and a second switch member. The main body generates a suction force to suck in dust with air by a motor. The handle is to be held by a user. The first switch member is disposed movably on the handle and switches between supplying and not supplying power to the motor by being moved. The second switch member is disposed movably on the handle and, by being moved, moves the first switch member so as to switch between supplying and not supplying power to the motor.Type: GrantFiled: July 16, 2019Date of Patent: May 16, 2023Assignee: MAKITA CORPORATIONInventor: Junichi Iwakami
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Publication number: 20230021910Abstract: A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.Type: ApplicationFiled: September 28, 2022Publication date: January 26, 2023Applicant: MAKITA CORPORATIONInventors: Junichi IWAKAMI, Hideharu MUTO, Ryosuke OTANI
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Patent number: 11484986Abstract: A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.Type: GrantFiled: November 20, 2017Date of Patent: November 1, 2022Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Hideharu Muto, Ryosuke Otani
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Publication number: 20220160195Abstract: A cleaner reduces noise. The cleaner includes a motor, a fan including a number Z of blades and rotatable at a rotational speed N, indicating revolutions per minute, about a rotation axis by the motor, a cover having an inlet located frontward from the fan, and a number V of ribs located in the inlet. The ribs extend in a radial direction from the rotation axis and are arranged in a circumferential direction about the rotation axis. The fan is rotatable to produce noise having a frequency fNZ of 20,000 Hz or higher, and fNZ=(m?k×V)×N/60 and m=n×Z+k×V, where n is an order, m is an integer, and k is an integer.Type: ApplicationFiled: August 23, 2021Publication date: May 26, 2022Applicant: MAKITA CORPORATIONInventors: Junichi IWAKAMI, Yuta KAWAI
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Publication number: 20210401247Abstract: A cleaner reduces noise. The cleaner includes a motor assembly including a motor and a fan rotatable about a rotation axis with a rotational force generated by the motor, a cover surrounding the motor assembly, a guide that guides air from the fan at least partially to an outer surface of the cover, and a rib assembly that guides the air guided by the guide at least partially in a circumferential direction about the rotation axis along the outer surface of the cover.Type: ApplicationFiled: May 26, 2021Publication date: December 30, 2021Applicant: MAKITA CORPORATIONInventor: Junichi IWAKAMI
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Patent number: 11191405Abstract: A vacuum cleaner (1; 1B) includes a housing (2; 100) that houses a fan (7) and a motor (8), which generates power that rotates the fan (7); one or more air-exhaust ports (10), which is provided in at least a portion of the housing (2; 100); and a sound-absorbing member (33) having a through hole (33). The sound-absorbing member (33) is disposed in an interior space of the housing (2; 100) so as to face the air-exhaust port(s) (10).Type: GrantFiled: February 5, 2020Date of Patent: December 7, 2021Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Takayuki Tahara
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Patent number: 11045938Abstract: Several means 71, 72, 73, 74, and 75 are provided for restricting a relative displacement in a separating direction of half-split housings 50L, 50R. At one or more of several screw-connection parts 60 of the left and right half-split housings 50L, 50R, a press-fitting protrusion 71a is provided in an insertion hole 62a of a boss-receiving part 62 into which a screw-boss part 61 is inserted. By press-fitting the screw-boss part 61 to the boss-receiving part 62, a separation resistance may be introduced between the left and right half-split housings 50L, 50R.Type: GrantFiled: January 27, 2017Date of Patent: June 29, 2021Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Shin Nakamura, Akira Mizutani, Takafumi Kotsuji
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Publication number: 20200245835Abstract: A vacuum cleaner (1; 1B) includes a housing (2; 100) that houses a fan (7) and a motor (8), which generates power that rotates the fan (7); one or more air-exhaust ports (10), which is provided in at least a portion of the housing (2; 100); and a sound-absorbing member (33) having a through hole (33). The sound-absorbing member (33) is disposed in an interior space of the housing (2; 100) so as to face the air-exhaust port(s) (10).Type: ApplicationFiled: February 5, 2020Publication date: August 6, 2020Inventors: Junichi IWAKAMI, Takayuki TAHARA
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Publication number: 20200086455Abstract: A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.Type: ApplicationFiled: November 20, 2017Publication date: March 19, 2020Applicant: MAKITA CORPORATIONInventors: Junichi IWAKAMI, Hideharu MUTO, Ryosuke OTANI
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Patent number: 10556319Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover at least partially covers a tool accessory mounted on the spindle. The cover includes a first cover part and a second cover part. The first cover part is fixed to the housing and at least partially covers the tool accessory from above. The second cover part is held such that it is capable of moving relative to the first cover part. The grinder is configured such that the area of the tool accessory covered by the cover changes in accordance with the relative movement.Type: GrantFiled: September 7, 2016Date of Patent: February 11, 2020Assignee: MAKITA CORPORATIONInventors: Junichi Iwakami, Hideharu Muto, Naoki Soeda, Ryosuke Otani
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Publication number: 20200037839Abstract: A cleaner includes a main body, a handle, a first switch member, and a second switch member. The main body generates a suction force to suck in dust with air by a motor. The handle is to be held by a user. The first switch member is disposed movably on the handle and switches between supplying and not supplying power to the motor by being moved. The second switch member is disposed movably on the handle and, by being moved, moves the first switch member so as to switch between supplying and not supplying power to the motor.Type: ApplicationFiled: July 16, 2019Publication date: February 6, 2020Applicant: MAKITA CORPORATIONInventor: Junichi IWAKAMI
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Publication number: 20170225316Abstract: Several means 71, 72, 73, 74, and 75 are provided for restricting a relative displacement in a separating direction of half-split housings 50L, 50R. At one or more of several screw-connection parts 60 of the left and right half-split housings 50L, 50R, a press-fitting protrusion 71a is provided in an insertion hole 62a of a boss-receiving part 62 into which a screw-boss part 61 is inserted. By press-fitting the screw-boss part 61 to the boss-receiving part 62, a separation resistance may be introduced between the left and right half-split housings 50L, 50R.Type: ApplicationFiled: January 27, 2017Publication date: August 10, 2017Applicant: MAKITA CORPORATIONInventors: Junichi IWAKAMI, Shin NAKAMURA, Akira MIZUTANI, Takafumi KOTSUJI
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Patent number: D935710Type: GrantFiled: June 25, 2019Date of Patent: November 9, 2021Assignee: MAKITA CORPORATIONInventors: Kento Nakamura, Junichi Iwakami
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Patent number: D985866Type: GrantFiled: June 22, 2021Date of Patent: May 9, 2023Assignee: MAKITA CORPORATIONInventors: Yota Kumagai, Junichi Iwakami