Patents by Inventor Hiroaki Watanabe
Hiroaki Watanabe 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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Publication number: 20030107268Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the ground.Type: ApplicationFiled: January 7, 2003Publication date: June 12, 2003Applicant: Komatsu LimitedInventors: Hiroaki Watanabe, Kazutoshi Hori, Teiji Yamamoto, Tomihiro Tagawa, Kenji Taira
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Publication number: 20030102715Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the around.Type: ApplicationFiled: January 7, 2003Publication date: June 5, 2003Applicant: Komatsu LimitedInventors: Hiroaki Watanabe, Kazutoshi Hori, Teiji Yamamoto, Tomihiro Tagawa, Kenji Taira
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Patent number: 6568769Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the ground.Type: GrantFiled: March 3, 2000Date of Patent: May 27, 2003Assignee: Komatsu Ltd.Inventors: Hiroaki Watanabe, Kazutoshi Hori, Teiji Yamamoto, Tomihiro Tagawa, Kenji Taira
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Patent number: 6533371Abstract: With the objective of providing an elastic crawler shoe capable of securing desired ground contact pressure on an icy road or a pressed snow road, thereby preventing a skid, a ground contact face of an elastic body which is bonded to a core bar so as to cover the core bar has grooves, and a central ground contact face in a longitudinal direction of the elastic crawler shoe is provided with stepped parts relative to end portions thereof so as to be protrusively stepped.Type: GrantFiled: December 6, 2000Date of Patent: March 18, 2003Assignee: Komatsu, Ltd.Inventors: Kazutoshi Hori, Hiroaki Watanabe
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Publication number: 20030041299Abstract: A N-level cell memory controlled by the memory controller of the invention have an internal configuration in which the plurality of data input/output terminals connected to the second data bus are separated into first through Mth data input/output terminal groups, such that there is no redundancy in the n bits of data associated with one N-level cell. Together with this, the memory controller separates the plurality of data bits on the first data bus into first through Mth data groups, the ECC circuits generate error-correction codes for each of these data groups, and the first through Mth data groups and first through Mth error correction codes are input to the first through Mth data input/output terminals of the N-level cell memory, via the second data bus.Type: ApplicationFiled: March 15, 2002Publication date: February 27, 2003Applicant: Fujitsu LimitedInventors: Keisuke Kanazawa, Hiroaki Watanabe, Yoshinobu Higuchi, Hideki Arakawa, Yoshiki Okumura, Yutaka Sekino
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Publication number: 20030034690Abstract: With the objective of providing an elastic crawler shoe capable of securing desired ground contact pressure on an icy road or a pressed snow road, thereby preventing a skid, a ground contact face of an elastic body which is bonded to a core bar so as to cover the core bar has grooves, and a central ground contact face in a longitudinal direction of the elastic crawler shoe is provided with stepped parts relative to end portions thereof so as to be protrusively stepped.Type: ApplicationFiled: December 6, 2000Publication date: February 20, 2003Inventors: Kazutoshi Hori, Hiroaki Watanabe
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Patent number: 6474756Abstract: A rubber crawler belt having a pattern of a lug provided on an outer circumferential side of a rubber belt has a central lug portion provided to continuously extend around a center portion in a width direction of the outer circumference of the rubber belt, in a waveform, and a plurality of branch lug portions each having a predetermined width and provided from the central lug portion toward left and right end portions of the rubber belt to be away therefrom diagonally in a circumferential direction, and an interval between the branched lug portions adjacent to each other being the same as an interval between drive protrusions, in the circumferential direction of the rubber belt.Type: GrantFiled: April 10, 2001Date of Patent: November 5, 2002Assignee: Komatsu Ltd.Inventors: Kazutoshi Hori, Hiroaki Watanabe, Masatake Tamaru, Kenzo Kimoto
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Patent number: 6471307Abstract: A crawler belt type traveling system which ensures improved durability in the portions near road wheel rolling contact sections. The system comprises crawler belts formed from an elastic material such as rubber and road wheels attached to a vehicle body. Each crawler belt has core bars embedded therein so as to be aligned at specified intervals in a longitudinal direction of the crawler belt. Each core bar has a pair of guide projections at the center thereof with respect to a widthwise direction of the crawler belt, the pair of guide projections being aligned in a widthwise direction of the crawler belt. Provided at both sides of the pair of guide projections are road wheel rolling contact sections. Each road wheel comes into contact with the road wheel rolling contact sections, for supporting each crawler belt.Type: GrantFiled: June 13, 2001Date of Patent: October 29, 2002Assignee: Komatsu Ltd.Inventors: Hiroaki Watanabe, Kazuo Yasojima
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Publication number: 20020047306Abstract: A crawler belt type traveling system which ensures improved durability in the portions near road wheel rolling contact sections. The system comprises crawler belts formed from an elastic material such as rubber and road wheels attached to a vehicle body. Each crawler belt has core bars embedded therein so as to be aligned at specified intervals in a longitudinal direction of the crawler belt. Each core bar has a pair of guide projections at the center thereof with respect to a widthwise direction of the crawler belt, the pair of guide projections being aligned in a widthwise direction of the crawler belt. Provided at both sides of the pair of guide projections are road wheel rolling contact sections. Each road wheel comes into contact with the road wheel rolling contact sections, for supporting each crawler belt.Type: ApplicationFiled: June 13, 2001Publication date: April 25, 2002Inventors: Hiroaki Watanabe, Kazuo Yasojima
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Publication number: 20020038979Abstract: It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It, is possible to secure a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar (10) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions (1a, 1b) formed in a substantially inverse-trapezoidal shape or recess portions (10a, 10b) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion (1e) formed in a substantially inverse-trapezoidal shape or a through hole (1f) may be formed in a center portion.Type: ApplicationFiled: September 28, 2001Publication date: April 4, 2002Applicant: KOMATSU LTD.Inventors: Hiroaki Watanabe, Kazutoshi Hori, Kazuo Yasojima
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Patent number: 6357341Abstract: In a reciprocating piston of an internal combustion engine comprising a piston skirt having a major-thrust-side skirt portion and a minor-thrust-side skirt portion, a projected circumferential width of the minor-thrust-side skirt portion is greater than a projected circumferential width of the major-thrust-side skirt portion. Additionally, the piston skirt is dimensioned so that the minimum thickness of the minor-thrust-side skirt portion is less than the minimum thickness of the major-thrust-side skirt portion.Type: GrantFiled: April 19, 1999Date of Patent: March 19, 2002Assignee: Unisia Jecs CorporationInventors: Hiroaki Watanabe, Shingo Motoda
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Publication number: 20020024256Abstract: A rubber crawler belt with preferable riding quality without the fear of breakage is provided. For this purpose, a pattern of a lug (4) provided on an outer circumferential side of a rubber belt (2) has a central lug portion (5) provided to continuously extend around a center portion in a width direction of the outer circumference of the rubber belt (2), in a waveform, and a plurality of branch lug portions (6) each having a predetermined width and provided from said central lug portion (5) toward left and right end portions of the rubber belt (2) to be away therefrom diagonally in a circumferential direction, and an interval between the branched lug portions (6) adjacent to each other being the same as an interval between the drive protrusions (3), in the circumferential direction of the rubber belt (2).Type: ApplicationFiled: April 10, 2001Publication date: February 28, 2002Inventors: Kazutoshi Hori, Hiroaki Watanabe, Masatake Tamaru, Kenzo Kimoto
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Patent number: 6309063Abstract: An ink-jet printer includes a sheet feed-in mechanism 60 for feeding a paper sheet, a rotary drum 10 having a peripheral surface 11 of a size larger than the paper sheet to be fed by the sheet feed-in mechanism 60, for rotating at a constant speed, a sheet holding system 20 for holding the paper sheet on the peripheral surface of the rotary drum, a print head 200 for printing an image by repeatedly ejecting ink onto the paper sheet held on the peripheral surface of the rotary drum 10 while the rotary drum 10 performs a predetermined number of rotations, a sheet separator 140 for separating the paper sheet from the peripheral surface 11 of the rotary drum, a sheet feed-out mechanism 160 for feeding out the paper sheet separated by the sheet separator 140, a control unit 111 for controlling the sheet feed-in mechanism 60, the rotary drum 10, the sheet holding system 20, the print head 200, the sheet separator 140 and the sheet feed-out mechanism 160.Type: GrantFiled: August 12, 1998Date of Patent: October 30, 2001Assignee: Toshiba Tec Kabushiki KaishaInventors: Tadao Kamano, Hiroyuki Takada, Shigeru Morino, Hitoshi Ushiogi, Kyouichi Shibata, Takashi Kashiwagi, Izumi Araki, Hiroshi Yamaguchi, Hidenobu Suzuki, Hiroaki Watanabe
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Publication number: 20010013543Abstract: A communication control apparatus has a plurality of communication processing units each of which processes data, and a control unit which controls the plurality of communication processing units. The control unit includes a polling unit and an allowing unit. The polling unit polls the plurality of communication processing cards in a predetermined order. The allowing unit allows an operation of outputting data from one of the plurality of communication processing cards when the control unit receives a response from the communication processing card. Each of the plurality of communication processing units includes a responding unit and an outputting unit. The responding unit returns to the control unit a response to the polling by the polling unit when the communication processing unit has data to be output, and is polled by the polling unit. The outputting unit performs the operation of outputting data which is allowed by the allowing unit.Type: ApplicationFiled: December 4, 2000Publication date: August 16, 2001Applicant: FUJITSU LIMITEDInventors: Ken Takashima, Atsushi Yabe, Tatsuru Nakagaki, Hirohito Tanaka, Hiroaki Watanabe
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Patent number: 6052742Abstract: An interface between a card-type peripheral device and a host machine, such as a PC, determines the operational supply voltage required to operate the peripheral device prior to the host machine supplying the operational supply voltage to the peripheral device. The host machine first receives information stored on the peripheral device specifying the operational voltage required to operate the peripheral device. The host machine then generates the proper operational supply voltage and provides it to the peripheral device. The interface prevents damage to the peripheral device due to the host machine supplying an incorrect operational voltage.Type: GrantFiled: March 18, 1998Date of Patent: April 18, 2000Assignee: Fujitsu LimitedInventors: Masaki Kirinaka, Hiroaki Watanabe, Tetsuhiko Endoh, Ryuji Tanaka
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Patent number: 6048060Abstract: A printing medium discharge apparatus used for discharging a printing medium from a rotary drum in an ink jet printer for printing a desired image onto the printing medium by an ink jet while holding the printing medium on the rotary drum, includes a printing medium carry and discharge device and a printing medium press device. The printing medium carry and discharge device carries thereon the printing medium from the rotary drum, on the printing medium an image having been printed, to make a non-image formation surface of the printing medium including no image formation region contact the printing medium carry and discharge device, and discharges the printing medium carried thereon to be moved apart from the rotary drum.Type: GrantFiled: November 10, 1997Date of Patent: April 11, 2000Assignee: Toshiba Tec Kabushiki KaishaInventors: Tsugio Narushima, Akira Satou, Kyouichi Shibata, Hiroaki Watanabe, Hiroshi Yamaguchi, Juntaro Oku
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Patent number: 5894824Abstract: A piston for an internal combustion engine includes a ring land formed with a piston-ring groove, and a skirt connected to the ring land so that the piston-ring groove is adjacent thereto, the skirt being formed with a piston-pin hole with an axis, and having a plane including the axis of the piston-pin hole. A taper is formed on the skirt in a first portion thereof nearer to the ring land than the plane to converge on the ring land.Type: GrantFiled: February 28, 1997Date of Patent: April 20, 1999Assignee: Unisia Jecs CorporationInventors: Hiroaki Watanabe, Kazuhiko Shirane, Shingo Motoda, Hideyuki Miyasaka
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Patent number: 5824000Abstract: An apparatus for supporting a flexible bag containing fluid and for applying pressure to the bag to thereby facilitate the dispensing of the fluid from the bag, comprising a cuff adapted to support a bag of fluid to be dispensed and to apply pressure to facilitate the dispensing of the fluid; A gauge to determine and display the pressure within the cuff, the gauge being formed of a housing with a fluid port; and a manifold having a passageway in fluid communication with the cuff, a passageway in fluid communication with a pump for inflating the cuff, and a passageway coupled with respect to the gauge.Type: GrantFiled: March 21, 1994Date of Patent: October 20, 1998Inventors: John A. Pavlo, Hiroaki Watanabe, Makoto Hirao, Masato Okubo
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Patent number: 5808490Abstract: A bus to which a bus control circuit and at least one electronic circuit are connected is controlled by a) storing a signal level which is output to the bus when the bus is in an active state, and b) fixing the bus to the signal level stored in the step a) when the bus switches to an inactive state.Type: GrantFiled: April 2, 1997Date of Patent: September 15, 1998Assignee: Fujitsu LimitedInventor: Hiroaki Watanabe
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Patent number: 5768321Abstract: An automatic frequency controller synchronizes a received carrier signal with a simulated carrier signal to automatically control a center frequency of the simulated carrier signal. The received carrier signal has a first synchronous code pattern inserted into a plurality of frame periods and a second synchronous code pattern inserted into a plurality of multiframe periods. The phase of the received carrier signal is determined by sweeping the center frequency of the simulated carrier signal and mixing the simulated carrier signal with the received carrier signal. The sweep of the center frequency of the simulated carrier signal is reduced when frame synchronization is detected and the sweep of the center frequency is fixed when multiframe synchronization is detected.Type: GrantFiled: October 2, 1996Date of Patent: June 16, 1998Assignee: Fujitsu LimitedInventors: Hiroaki Watanabe, Tomoyuki Ueno, Mitsuhiro Ono, Seiichi Yamaguchi