Patents by Inventor Hiroshi Kitagawara
Hiroshi Kitagawara 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: 7694765Abstract: A power-dividing device for a working vehicle includes a case member, an input shaft supported by the case member so that a first end portion of the input shaft can be operatively connected to a driving source, a PTO unit having a PTO shaft supported by the case member so as to be offset with respect to the input shaft, a power transmission mechanism accommodated in the case member to transmit power from the input shaft to the PTO shaft, and a first pump unit having a first pump shaft operatively connected to the input shaft and being fluid-connected to an actuator disposed outside.Type: GrantFiled: August 10, 2007Date of Patent: April 13, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Hiroshi Kitagawara, Koji Kiyooka
-
Patent number: 7658257Abstract: A pump system includes a housing, an input shaft, a pump shaft; a hydraulic pump body, a PTO shaft, a power transmission gear train, and a PTO clutch mechanism. The housing has a narrow gear accommodating space surrounding a region including a mesh point between the first and second transmission gears of the power transmission gear train, a PTO clutch accommodating space which surrounds the PTO clutch mechanism and which is fluidly communicated with the gear accommodating space, and a pair of first and second suction/discharge ports which communicate the internal space of the housing with an outside of the housing. The first suction/discharge port is arranged within the gear accommodating space so as to be positioned in an opposite side to the PTO clutch accommodating space with the mesh point between the first and second transmission gears interposed therebetween.Type: GrantFiled: June 27, 2008Date of Patent: February 9, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Shigenori Sakikawa, Hiroshi Kitagawara
-
Publication number: 20080271939Abstract: A pump system includes a housing, an input shaft, a pump shaft; a hydraulic pump body, a PTO shaft, a power transmission gear train, and a PTO clutch mechanism. The housing has a narrow gear accommodating space surrounding a region including a mesh point between the first and second transmission gears of the power transmission gear train, a PTO clutch accommodating space which surrounds the PTO clutch mechanism and which is fluidly communicated with the gear accommodating space, and a pair of first and second suction/discharge ports which communicate the internal space of the housing with an outside of the housing. The first suction/discharge port is arranged within the gear accommodating space so as to be positioned in an opposite side to the PTO clutch accommodating space with the mesh point between the first and second transmission gears interposed therebetween.Type: ApplicationFiled: June 27, 2008Publication date: November 6, 2008Inventors: Toshifumi YASUDA, Shigenori Sakikawa, Hiroshi Kitagawara
-
Patent number: 7407030Abstract: A pump system includes a housing, an input shaft, a pump shaft; a hydraulic pump body, a PTO shaft, a power transmission gear train, and a PTO clutch mechanism. The housing has a narrow gear accommodating space surrounding a region including a mesh point between the first and second transmission gears of the power transmission gear train, a PTO clutch accommodating space which surrounds the PTO clutch mechanism and which is fluidly communicated with the gear accommodating space, and a pair of first and second suction/discharge ports which communicate the internal space of the housing with an outside of the housing. The first suction/discharge port is arranged within the gear accommodating space so as to be positioned in an opposite side to the PTO clutch accommodating space with the mesh point between the first and second transmission gears interposed therebetween.Type: GrantFiled: July 28, 2005Date of Patent: August 5, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Toshifumi Yasuda, Shigenori Sakikawa, Hiroshi Kitagawara
-
Patent number: 7370714Abstract: A power-dividing device for a working vehicle includes a case member, an input shaft supported by the case member so that a first end portion of the input shaft can be operatively connected to a driving source, a PTO unit having a PTO shaft supported by the case member so as to be offset with respect to the input shaft, a power transmission mechanism accommodated in the case member to transmit power from the input shaft to the PTO shaft, and a first pump unit having a first pump shaft operatively connected to the input shaft and being fluid-connected to an actuator disposed outside.Type: GrantFiled: April 12, 2004Date of Patent: May 13, 2008Inventors: Toshifumi Yasuda, Shigenori Sakikawa, Hiroshi Kitagawara
-
Publication number: 20070289396Abstract: A power-dividing device for a working vehicle includes a case member, an input shaft supported by the case member so that a first end portion of the input shaft can be operatively connected to a driving source, a PTO unit having a PTO shaft supported by the case member so as to be offset with respect to the input shaft, a power transmission mechanism accommodated in the case member to transmit power from the input shaft to the PTO shaft, and a first pump unit having a first pump shaft operatively connected to the input shaft and being fluid-connected to an actuator disposed outside.Type: ApplicationFiled: August 10, 2007Publication date: December 20, 2007Inventors: Hiroshi Kitagawara, Koji Kiyooka
-
Publication number: 20060042843Abstract: There is provided a pump system including a housing capable of reserving oil in an internal space; an input shaft supported by the housing so as to be operatively connected to a driving source; a pump shaft supported by the housing; a hydraulic pump body which is accommodated in the housing and is driven by the pump shaft; a PTO shaft supported by the housing; a power transmission gear train which transmits a power from the input shaft to the pump shaft and the PTO shaft, and is accommodated in the housing; and a PTO clutch mechanism accommodated in the housing so as to be positioned in a power transmission path from the input shaft to the PTO shaft. The power transmission gear train has at least two first and second transmission gears meshed with each other.Type: ApplicationFiled: July 28, 2005Publication date: March 2, 2006Inventors: Toshifumi Yasuda, Shigenori Sakikawa, Hiroshi Kitagawara
-
Publication number: 20040237490Abstract: A power-dividing device for a working vehicle includes a case member, an input shaft supported by the case member so that a first end portion of the input shaft can be operatively connected to a driving source, a PTO unit having a PTO shaft supported by the case member so as to be offset with respect to the input shaft, a power transmission mechanism accommodated in the case member to transmit power from the input shaft to the PTO shaft, and a first pump unit having a first pump shaft operatively connected to the input shaft and being fluid-connected to an actuator disposed outside.Type: ApplicationFiled: April 12, 2004Publication date: December 2, 2004Inventors: Toshifumi Yasuda, Shigenori Sakikawa, Hiroshi Kitagawara, Koji Kiyooka
-
Patent number: 5570605Abstract: A bearing support frame (4) is disposed within a rear end portion of a tractor front housing (1) and is fixedly supported by this housing which has an internal partition wall (1a) and an open rear end. A transmission casing (2) having an open front end is fastened to the rear of the front housing and includes a primary speed change mechanism (14) which is disposed between a drive shaft (12) and change shaft (13). These shafts are supported at their front end portions by the support frame and extend forwardly of this frame. An additional speed change mechanism (9) is disposed within a rear half of the front housing and comprises a primary shaft (7), rotatable output member (10) and countershaft (11). The output member is fixedly mounted on a front end portion of the drive shaft, and a rear end portion of the countershaft is journaled by a front end portion of the change shaft.Type: GrantFiled: July 31, 1995Date of Patent: November 5, 1996Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Hiroshi Kitagawara, Keisaku Hikishima
-
Patent number: 5462148Abstract: In a vehicle multi-ratio transmission comprising a plurality of change-speed gear trains, including a backward directional gear train, with which synchronizer clutches are associated for actuating same, two multidisc-type synchronizer clutches (12) are employed for actuating one of forward directional gear trains, which is operated under a heavy condition, and for actuating the backward directional gear train. Cone-type synchronizer clutches (11) are employed for actuating the other gear trains. Seizing of clutch members as well as an unexpected start of the vehicle at a neutral condition of the transmission are well prevented and increase of cost for securing these advantages is suppressed.Type: GrantFiled: November 22, 1993Date of Patent: October 31, 1995Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Toshiro Azuma, Yasuo Seno, Hiroshi Kitagawara, Shusuke Nemoto
-
Patent number: 5269195Abstract: In a vehicle park lock mechanism having a rotatable lock arm (5) for locking a gear (3) which is fixedly mounted on a transmission shaft (2), a pawl device integral with the lock arm is comprised of first and second locking pawls (6F, 6R) which are operable to engage the gear so as to prevent forward and backward directional rotations of the gear. The first and second pawls are arranged such that they may project into one and another toothe spaces (3b) of the gear which are spaced circumferentially of the gear with at least one tooth space therebetween. Gear having a relatively large pressure angle such as a transmission gear may satisfactorily be used as the gear for the lock mechanism.Type: GrantFiled: July 23, 1992Date of Patent: December 14, 1993Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventor: Hiroshi Kitagawara