Patents by Inventor Toshiaki Okanishi
Toshiaki Okanishi 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: 20220289355Abstract: In a marine propulsion apparatus that transmits power of at least one of an internal combustion engine (ICE) and a generator motor (GM) mounted on a ship to a propeller via a forward reverse switching mechanism, the marine propulsion apparatus can be downsized as a whole. The marine propulsion apparatus includes a connection switching mechanism capable of selectively connecting the GM to an upstream side and a downstream side of the power transmission from the ICE in the forward reverse switching mechanism. Then, the forward reverse switching mechanism is interposed between the ICE and the connection switching mechanism, and a large torque from the ICE is not directly transmitted to the connection switching mechanism. As a result, it is not necessary to increase the capacity of the connection switching mechanism, and the connection switching mechanism and thus the marine propulsion apparatus can be downsized.Type: ApplicationFiled: July 20, 2020Publication date: September 15, 2022Inventors: Koji KIYOOKA, Tomoyuki EBIHARA, Takashi NISHIZAWA, Koga YAMANE, Kengo SASAHARA, Shigeaki NAKAGAWA, Kazuki YASUI, Toshiaki OKANISHI
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Patent number: 8337353Abstract: The traveling system transmission structure for vehicle includes a planetary gear unit, a forward/rearward-travel switch unit and a transmission case. A front end portion of a sun gear shaft is directly or indirectly supported by a front bearing wall that is detachably connected to a front side of the transmission case and a rear end portion of a planetary outputting member is directly or indirectly supported by an intermediate bearing wall, so that the planetary gear unit is accommodated in a front chamber that is sandwiched by the front bearing wall and the intermediate bearing wall.Type: GrantFiled: August 27, 2009Date of Patent: December 25, 2012Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Koji Iwaki, Fumitoshi Ishino, Hideki Kanenobu, Kazunari Koga, Norihiro Ishii, Toshiaki Okanishi
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Patent number: 8157070Abstract: A marine reduction and reverse gear unit having an output shaft disposed at an acute (or obtuse) angle with respect to an input shaft 7 comprises: a drive gear 15 for transmitting torque from the input shaft 7; first and second driven gears 30, 31 engaged with the drive gear and disposed on the right and left sides thereof to sandwich the drive gear between the first and second driven gears; a reverse gear 16 connected to the drive gear 15 via a reverse hydraulic clutch 16; a first forward speed gear 33 connected to the first driven gear 30 via a hydraulic clutch; a second forward speed gear connected to the second driven gear 31 via a hydraulic clutch; and an output gear 26 fixed on the output shaft and engaged directly with one of the reverse gear 16, first forward speed gear 33 and second forward speed gear 36, or engaged therewith via idle gears to thereby receive the transmitted torque.Type: GrantFiled: July 24, 2007Date of Patent: April 17, 2012Assignee: Yanmar Co., Ltd.Inventors: Toshiaki Okanishi, Kazuyoshi Harada
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Publication number: 20100051410Abstract: The traveling system transmission structure for vehicle includes a planetary gear unit, a forward/rearward-travel switch unit and a transmission case. A front end portion of a sun gear shaft is directly or indirectly supported by a front bearing wall that is detachably connected to a front side of the transmission case and a rear end portion of a planetary outputting member is directly or indirectly supported by an intermediate bearing wall, so that the planetary gear unit is accommodated in a front chamber that is sandwiched by the front bearing wall and the intermediate bearing wall.Type: ApplicationFiled: August 27, 2009Publication date: March 4, 2010Inventors: Koji Iwaki, Fumitoshi Ishino, Hideki Kanenobu, Kazunari Koga, Norihiro Ishii, Toshiaki Okanishi
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Patent number: 7506737Abstract: A self-contained marine reversing gear assembly is provided with a locking device for an internal combustion engine in which introduction of the working oil from the lubricating oil circuit is unnecessary. The locking device includes an input shaft driven by an internal combustion engine; an output shaft connected to a propeller shaft; a hydraulic pump driven by the input shaft; a hydraulic forward and reverse clutch; a directional control valve for switching the forward and reverse clutch by the supply of working oil from the hydraulic pump; and a locking device provided with a locking mechanism member for locking the output shaft. The locking device includes a hydraulic actuator for unlocking the output shaft by operating on the locking mechanism member due to the supply of working oil from the hydraulic pump.Type: GrantFiled: January 12, 2006Date of Patent: March 24, 2009Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Toshiaki Okanishi, Shigeaki Nakagawa
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Publication number: 20090029607Abstract: A propeller power transmission device according to the present invention comprises an input shaft 9 connected to a drive shaft 7 of an engine 3 via a coupling 8; a pair of right and left output shafts 12 and 13 connected to the right and left propeller shafts 5 and 6 via couplings 10 and 11, respectively; a gear train comprised of gears 20 to 30 for transmitting the power of the input shaft 9 to each of the output shafts 12 and 13 through clutch mechanisms 14, 15, 16 and 17, and causing the output shafts to undergo forward or reverse rotation in response to switching between forward and reverse rotation clutch mechanisms; and a gear case 4 for containing the input shaft 9, the output shafts 12 and 13, the gear train of gears 20 to 30, and the forward and reverse rotation clutch mechanisms 14 to 17.Type: ApplicationFiled: February 12, 2008Publication date: January 29, 2009Inventors: Akinobu Ryugo, Toshiaki Okanishi
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Publication number: 20080026652Abstract: A marine reduction and reverse gear unit having an output shaft disposed at an acute (or obtuse) angle with respect to an input shaft 7 comprises: a drive gear 15 for transmitting torque from the input shaft 7; first and second driven gears 30, 31 engaged with the drive gear and disposed on the right and left sides thereof to sandwich the drive gear between the first and second driven gears; a reverse gear 16 connected to the drive gear 15 via a reverse hydraulic clutch 16; a first forward speed gear 33 connected to the first driven gear 30 via a hydraulic clutch; a second forward speed gear connected to the second driven gear 31 via a hydraulic clutch; and an output gear 26 fixed on the output shaft and engaged directly with one of the reverse gear 16, first forward speed gear 33 and second forward speed gear 36, or engaged therewith via idle gears to thereby receive the transmitted torque.Type: ApplicationFiled: July 24, 2007Publication date: January 31, 2008Applicant: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Toshiaki Okanishi, Kazuyoshi Harada
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Publication number: 20060157316Abstract: The present invention provides a self-contained marine reversing gear assembly provided with a locking device for internal combustion engine in which introduction of the working oil from the lubricating oil circuit is unnecessary. The marine reversing gear assembly provided with a locking device of the present invention comprises an input shaft driven by an internal combustion engine; an output shaft connected to a propeller shaft; a hydraulic pump driven by the input shaft; a hydraulic forward and reverse clutch; a directional control valve for switching the forward and reverse clutch by the supply of working oil from the hydraulic pump; and a locking device provided with a locking mechanism member for locking the output shaft, the locking device comprising a hydraulic actuator for unlocking the output shaft by operating on the locking mechanism member due to the supply of working oil from the hydraulic pump.Type: ApplicationFiled: January 12, 2006Publication date: July 20, 2006Applicant: KANZAKI KOKYUKOKI Mfg. Co., Ltd.Inventors: Toshiaki Okanishi, Shigeaki Nakagawa
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Patent number: 6131316Abstract: A snow thrower machine having an axle driving unit comprising a housing, consisting of a front housing and a rear housing and containing an axle. Disposed in the housing are a hydraulic pump, which receives power from an engine, a hydraulic motor, which is driven by pressurized oil received from hydraulic pump and a center section, having a pump mounting surface parallel to a joint surface between the front housing and the rear housing. The axle is supported by the front housing below the hydraulic pump and a parking brake system for the axle driving unit is disposed above an expanded portion of the front housing, which contains the axle. The parking brake system is constructed so that a lock pin, supported by the housing, can be engaged with a lock member, fixed onto a motor shaft of the hydraulic motor.Type: GrantFiled: April 9, 1998Date of Patent: October 17, 2000Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Atsuo Yoshina, Toshiaki Okanishi, Akihiro Ima
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Patent number: 5590737Abstract: A transmission has a pair of hydraulic motors for hydraulically driving crawler type vehicles. The hydraulic motors are connected by a drive train having rotary members. The hydraulic motors are disposed such that a rotary axis of an output shaft on one hydraulic motor is offset from a rotary axis of an output shaft on the other hydraulic motor. A clutch is provided between one output shaft and another rotary member, which is coaxially disposed on the one output shaft. The clutch in accordance with the invention improves the accuracy of straight forward movement of the vehicle. In accordance with the invention, when a steering unit for steering the vehicle is moved to a steering position, for turning the vehicle, and a non-steering position, for straight forward movement of the vehicle, vehicle impact and clutch damage are reduced. The transmission can also be made more compact. In addition, a parking brake can be equipped on the other output shaft.Type: GrantFiled: September 19, 1994Date of Patent: January 7, 1997Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Toshiro Azuma, Masaaki Kojima, Masao Nakayachi, Toshiaki Okanishi, Masashi Inanaga
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Patent number: 4881612Abstract: A steering apparatus for a vehicle which is provided at part of a handle shaft of a handle with a steering mechanism so that a steering cylinder expands and contracts to perform hydraulic steering and, even when a hydraulic system is in trouble, the steering mechanism serves as a speed reduction mechanism, thereby enabling mechanical steering.Type: GrantFiled: January 19, 1988Date of Patent: November 21, 1989Assignee: Kanzaki Kokyukoki Mfg. Co. Ltd.Inventors: Kazuhiko Yano, Shigenori Sakikawa, Toshiaki Okanishi
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Patent number: 4869353Abstract: In an inertia lock- and key-type synchronizing clutch assembly, engagement between conical clutch surfaces (29, 36) of a clutch gear (28) and synchronizer ring (35) is enhanced spontaneously under a servo action by a cam means disposed between the synchronizer ring (35) and a hub member (31). Two problems arising from the servo action are solved by additional structures provided to a key member (39) and to the synchronizer ring. That is, an unexpected spontaneous engagement of the clutch mechanism from a neutral condition thereof is prevented with certainty by a cooperation of the key member and a pair of stopper projection (48, 49) on the synchronizer ring. The key member includes at an inner surface thereof a recess (50) for permitting a rotational displacement of the sychronizer ring when a clutch-engaging operation is performed.Type: GrantFiled: November 7, 1988Date of Patent: September 26, 1989Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Kazuhiko Ohtsuki, Gen Yoshii, Toshiaki Okanishi
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Patent number: 4802546Abstract: A steering apparatus of both mechancial and hydraulic systems for a vehicle which devised the conventional steering box itself so as to attach a steering hydraulic valve directly to a steering case at the steering gear box, thereby being steerable by the steering gear box.Type: GrantFiled: January 19, 1988Date of Patent: February 7, 1989Assignee: Kanzaki Kokyukoki Mfg. Co. Ltd.Inventors: Shigenori Sakikawa, Toshiaki Okanishi
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Patent number: 4748864Abstract: A reversing gear assembly (13) for a marine angle drive comprises a horizontal input shaft (15), to be connected to a horizontally mounted engine (11) and an inclined output shaft (16) to be connected to the propeller shaft (12). Gear casing (14) includes an intermediate shaft (17) which extends parallel with the output shaft (16). The input shaft (16) fixedly mounts a cylindrical gear (22) which meshes with a forward drive conical gear (23) on the output shaft (16) and with a reverse drive cylindrical gear (25) on the intermediate shaft (17). Center of engagement between the cylindrical gears (22, 25) is located on the sole common perpendicular line of the input and intermediate shafts (15, 17). Reverse drive gear train further includes two meshing cylindrical gears (26, 24) on the intermediate and output shafts (17, 16). The gears (23, 24) on the output shaft (16) are selectively coupled to this shaft by clutch means (32).Type: GrantFiled: June 11, 1987Date of Patent: June 7, 1988Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Kazuhiko Ohtsuki, Gen Yoshii, Toshiaki Okanishi