Patents by Inventor Yo Tsurumi
Yo Tsurumi 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: 7901316Abstract: An oscillating inner gearing planetary gear system is provided which does not need to occupy a large space even in a state where a driving source is joined. In particular, the axial length thereof can be shortened, and a large diameter hollow shaft therethrough can be formed. The oscillating inner gearing planetary gear system (100) is configured in such a manner that rotation of an input shaft (104) is reduced by internal oscillating bodies (116A,116B) oscillatingly rotating relative to an external gear (118), and the reduced output is delivered by the external gear (118) also serving as an output shaft. A middle shaft (108) is located parallel to the external gear (118) at a position more radially outward than the internal oscillating bodies (116A,116B). An orthogonal gearset (106) connects the middle shaft (108) and the input shaft (104) at a right angle.Type: GrantFiled: March 30, 2009Date of Patent: March 8, 2011Assignee: Sumitomo Heavy Industries, Ltd.Inventor: Yo Tsurumi
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Patent number: 7819770Abstract: An oscillating internally meshing planetary gear system is provided in order to improve basic performance and reduce cost at the same time. The oscillating internally meshing planetary gear system has an internal gear and external gears internally meshing with the internal gear and is configured such that one of the external gears and the internal gear is oscillatingly rotated by means of eccentric bodies formed in an input shaft (eccentric body shaft). The system includes: a sliding motion-facilitating member intervening between an outer periphery of the eccentric body and the oscillating gear; and an eccentric body shaft bearing supporting the eccentric body shaft. In addition to this, the eccentric body shaft bearing and the sliding motion-facilitating member have the same configuration.Type: GrantFiled: April 17, 2007Date of Patent: October 26, 2010Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Takashi Haga, Yo Tsurumi
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Publication number: 20090192004Abstract: An oscillating inner gearing planetary gear system is provided which does not need to occupy a large space even in a state where a driving source is joined. In particular, the axial length thereof can be shortened, and a large diameter hollow shaft therethrough can be formed. The oscillating inner gearing planetary gear system (100) is configured in such a manner that rotation of an input shaft (104) is reduced by internal oscillating bodies (116A, 116B) oscillatingly rotating relative to an external gear (118), and the reduced output is delivered by the external gear (118) also serving as an output shaft. A middle shaft (108) is located parallel to the external gear (118) at a position more radially outward than the internal oscillating bodies (116A, 116B). An orthogonal gearset (106) connects the middle shaft (108) and the input shaft (104) at a right angle.Type: ApplicationFiled: March 30, 2009Publication date: July 30, 2009Inventor: Yo Tsurumi
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Patent number: 7534184Abstract: An oscillating inner gearing planetary gear system is provided which does not need to occupy a large space even in a state where a driving source is joined. In particular, the axial length thereof can be shortened, and a large diameter hollow shaft therethrough can be formed. The oscillating inner gearing planetary gear system (100) is configured in such a manner that rotation of an input shaft (104) is reduced by internal oscillating bodies (116A,116B) oscillatingly rotating relative to an external gear (118), and the reduced output is delivered by the external gear (118) also serving as an output shaft. A middle shaft (108) is located parallel to the external gear (118) at a position more radially outward than the internal oscillating bodies (116A,116B). An orthogonal gearset (106) connects the middle shaft (108) and the input shaft (104) at a right angle.Type: GrantFiled: March 26, 2004Date of Patent: May 19, 2009Assignee: Sumitomo Heavy Industries, Ltd.Inventor: Yo Tsurumi
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Patent number: 7510497Abstract: An internal teeth oscillating inner gearing planetary gear system is provided with an input shaft, an eccentric gear rotated by the input shaft, the internal oscillating body oscillatingly rotated through the inner circumferential surface of the eccentric gear, and an external gear meshed with the internal oscillating body.Type: GrantFiled: March 1, 2006Date of Patent: March 31, 2009Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Yo Tsurumi, Takashi Haga
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Publication number: 20070243967Abstract: An oscillating internally meshing planetary gear system is provided in order to improve basic performance and reduce cost at the same time. The oscillating internally meshing planetary gear system has an internal gear and external gears internally meshing with the internal gear and is configured such that one of the external gears and the internal gear is oscillatingly rotated by means of eccentric bodies formed in an input shaft (eccentric body shaft). The system includes: a sliding motion-facilitating member intervening between an outer periphery of the eccentric body and the oscillating gear; and an eccentric body shaft bearing supporting the eccentric body shaft. In addition to this, the eccentric body shaft bearing and the sliding motion-facilitating member have the same configuration.Type: ApplicationFiled: April 17, 2007Publication date: October 18, 2007Inventors: Takashi Haga, Yo Tsurumi
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Publication number: 20060213307Abstract: The power transmission device includes an internal gear and an external gear that is inscribed in the internal gear and engages with the internal gear, and can transmit an input power to an attachment. The power transmission device further includes: an inner pin for bringing out a relative rotation component between the internal gear and the external gear; and an output flange connected to the inner pin. In this configuration, the inner pin and the output flange are integrally formed as one member, and a mounting hole for connecting the output flange to the attachment is formed in a surface of the output flange that is opposite to the inner pin.Type: ApplicationFiled: March 17, 2006Publication date: September 28, 2006Inventors: Takashi Haga, Yo Tsurumi, Jun Tamenaga
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Publication number: 20060148608Abstract: An internal teeth oscillating inner gearing planetary gear system is provided with an input shaft, an eccentric gear rotated by the input shaft, the internal oscillating body oscillatingly rotated through the inner circumferential surface of the eccentric gear, and an external gear meshed with the internal oscillating body.Type: ApplicationFiled: March 1, 2006Publication date: July 6, 2006Inventors: Yo Tsurumi, Takashi Haga
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Patent number: 7070533Abstract: An internal teeth oscillating inner gearing planetary gear system, wherein installation space for piping, wiring, etc. can be easily secured in the central portion of the system according to a particular application. The gear system is configured such that rotation of an input shaft is reduced by internal teeth oscillating bodies oscillatingly rotating with respect to an external gear. Eccentric shafts are plurally provided. Eccentric shaft gears are provided for the plurality of eccentric shafts, respectively. A transmitting external gear with which the eccentric shaft gears and a driving source-end pinion concurrently mesh is also provided.Type: GrantFiled: March 26, 2004Date of Patent: July 4, 2006Assignee: Sumito Heavy Industries, Ltd.Inventors: Yo Tsurumi, Takashi Haga
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Patent number: 7056253Abstract: An internal teeth oscillating inner gearing planetary gear system is provided with an input shaft, an eccentric gear rotated by the input shaft, the internal oscillating body oscillatingly rotated through the inner circumferential surface of the eccentric gear, and an external gear meshed with the internal oscillating body.Type: GrantFiled: March 18, 2004Date of Patent: June 6, 2006Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Yo Tsurumi, Takashi Haga
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Publication number: 20060040779Abstract: A planetary reduction mechanism includes a ring member and a planetary rotary member internally meshing with the internal gear, and a pin. The pin extends through the planetary rotary member for preventing orbital motion or rotation of the planetary rotary member, or for taking out an orbital motion component or a rotational component thereof. A continuous groove is formed on an outer circumference of the pin.Type: ApplicationFiled: August 17, 2005Publication date: February 23, 2006Inventors: Yo Tsurumi, Takashi Haga, Jun Tamenaga
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Publication number: 20040254042Abstract: An oscillating inner gearing planetary gear system is provided which does not need to occupy a large space even in a state where a driving source is joined. In particular, the axial length thereof can be shortened, and a large diameter hollow shaft therethrough can be formed. The oscillating inner gearing planetary gear system (100) is configured in such a manner that rotation of an input shaft (104) is reduced by internal oscillating bodies (116A,116B) oscillatingly rotating relative to an external gear (118), and the reduced output is delivered by the external gear (118) also serving as an output shaft. A middle shaft (108) is located parallel to the external gear (118) at a position more radially outward than the internal oscillating bodies (116A,116B). An orthogonal gearset (106) connects the middle shaft (108) and the input shaft (104) at a right angle.Type: ApplicationFiled: March 26, 2004Publication date: December 16, 2004Inventor: Yo Tsurumi
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Publication number: 20040192486Abstract: An internal teeth oscillating inner gearing planetary gear system, wherein installation space for piping, wiring, etc. can be easily secured in the central portion of the system according to a particular application. The gear system is configured such that rotation of an input shaft is reduced by internal teeth oscillating bodies oscillatingly rotating with respect to an external gear. Eccentric shafts are plurally provided. Eccentric shaft gears are provided for the plurality of eccentric shafts, respectively. A transmitting external gear with which the eccentric shaft gears and a driving source-end pinion concurrently mesh is also provided.Type: ApplicationFiled: March 26, 2004Publication date: September 30, 2004Applicant: Sumitomo Heavy Industries, Ltd.Inventors: Yo Tsurumi, Takashi Haga
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Publication number: 20040185981Abstract: An internal teeth oscillating inner gearing planetary gear system is provided with an input shaft, an eccentric gear rotated by the input shaft, the internal oscillating body oscillatingly rotated through the inner circumferential surface of the eccentric gear, and an external gear meshed with the internal oscillating body.Type: ApplicationFiled: March 18, 2004Publication date: September 23, 2004Applicant: Sumitomo Heavy Industries, Ltd.Inventors: Yo Tsurumi, Takashi Haga
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Publication number: 20040097319Abstract: The wobbling inner gearing planetary gear system has planetary external gears and an internal gear with which the external gears internally mesh, a center axis of the system being located inside periphery of the external gears The method is a method of reducing angle transmission errors in the system, in which the number of teeth of the internal gear is X·n (X: even number of 4 or more; n: integer), and the difference in the number of teeth between the internal gear and external gears is 2. The external gears are superposed and machined to collectively form respective external gear teeth and through holes. The external gears are grouped into pairs and these pairs are circumferentially offset from each other by 360°/X around the center axis. One of each pair of the external gears is shifted parallel in 180° opposite direction away from the other one of each pair of the external gears.Type: ApplicationFiled: March 7, 2003Publication date: May 20, 2004Inventor: Yo Tsurumi
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Publication number: 20030224893Abstract: The present invention is a wobbling inner gearing planetary gear system having planetary external gears, and a center axis being located inside a periphery of the planetary external gears. The external gears can be provided in a number of 2n where n is an integer of 2 or more. The 2n external gears can be arranged in an circumferential direction of the center axis with a phase difference of 360°/2n. The external gears form parallels, and two external gears of each pair are offset from each other by a 180° phase difference. The two external gears can be arranged adjacent to each other in an axial direction of the center axis.Type: ApplicationFiled: March 7, 2003Publication date: December 4, 2003Inventor: Yo Tsurumi