Patents by Inventor Toshio Imanaka
Toshio Imanaka 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: 7896716Abstract: The subject invention provides a hydraulic saildrive apparatus comprising an upper unit 103 having an input shaft 1 connected to an engine 102 inside a boat, and a lower unit 104 having an output shaft 4 including a propeller shaft 2 and also having a lower portion protruding from the boat's bottom, wherein the upper unit 103 is provided with a hydraulic forward and reverse switching clutch 5 for transmitting the rotation direction of the input shaft 1 to the propeller shaft 2, the clutch 5 being capable of changing the rotation direction between forward and reverse relative to the input shaft 1.Type: GrantFiled: March 6, 2008Date of Patent: March 1, 2011Assignee: Yanmar Co., Ltd.Inventors: Toshio Imanaka, Osamu Matsumoto
-
Patent number: 7794296Abstract: A method to assemble a marine drive system wherein an acceptable-unacceptable criterion on the torsional vibration of a shaft of the marine drive system is established based on the correlation between the torsional stiffness of a propeller shaft and the moment of inertia of a propeller. A desirable elastic coupling for the marine drive shaft is selected based on the criterion. The marine drive system is assembled by using a flywheel, a marine reverse and reduction gear, and an elastic coupling, whose property is changeable, lying between an input shaft of the marine reverse and reduction gear and the flywheel.Type: GrantFiled: March 10, 2005Date of Patent: September 14, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Shigeaki Nakagawa, Toshio Imanaka
-
Publication number: 20080220669Abstract: The subject invention provides a hydraulic saildrive apparatus comprising an upper unit 103 having an input shaft 1 connected to an engine 102 inside a boat, and a lower unit 104 having an output shaft 4 including a propeller shaft 2 and also having a lower portion protruding from the boat's bottom, wherein the upper unit 103 is provided with a hydraulic forward and reverse switching clutch 5 for transmitting the rotation direction of the input shaft 1 to the propeller shaft 2, the clutch 5 being capable of changing the rotation direction between forward and reverse relative to the input shaft 1.Type: ApplicationFiled: March 6, 2008Publication date: September 11, 2008Inventors: Toshio Imanaka, Osamu Matsumoto
-
Patent number: 7270582Abstract: A power generating and propelling system of a vessel has an electric power generating device (10) installed between an internal combustion engine (2) and a transmission (3). A stator (11) of the generating device (10) is built in a flywheel housing (21a) of the internal combustion engine (2) or a casing (10a) connected to the flywheel housing (21a). A rotary shaft of the generating device (10) is disposed coaxially or eccentrically parallel to a crankshaft (2a) of the internal combustion engine (2) or an input shaft (3a) of the transmission (3) in the same direction with the crankshaft (2a) of the internal combustion engine (2).Type: GrantFiled: September 6, 2005Date of Patent: September 18, 2007Assignee: Yanmar Co., Ltd.Inventors: Hisanori Mori, Mitsuhiro Nakagaki, Hiroyasu Yukino, Takayuki Toda, Junichi Hitachi, Toshio Imanaka
-
Publication number: 20060172808Abstract: An object of the present invention is to provide improved torsional rigidity of an elastic coupling for use in a marine engine which couples an engine to a reversing gear. The elastic coupling comprises at least one low-rigidity element providing torsional rigidity during transmission of a predetermined low torque; and at least one high-rigidity element providing, during transmission of a predetermined high torque, torsional rigidity higher than that provided by the low-rigidity element.Type: ApplicationFiled: January 17, 2006Publication date: August 3, 2006Applicant: KANZAKI KOKYUKOKI Mfg. Co., Ltd.Inventors: Shigeaki Nakagawa, Toshio Imanaka
-
Publication number: 20060063443Abstract: The present invention provides a method to assemble a marine drive system wherein an acceptable-unacceptable criterion on the torsional vibration of a shaft of the marine drive system is established based on the correlation between the torsional stiffness of a propeller shaft and the moment of inertia of a propeller; a desirable component for the marine drive shaft is selected based on the criterion; and the marine drive system is assembled by using the selected components, the marine drive system comprising a flywheel 2, a marine reverse and reduction gear 4, and a elastic coupling 3, whose property are changeable, lying between an input shaft of the marine reverse and reduction gear 6 and the flywheel 2; and the component for the shaft of the marine drive system is the elastic coupling.Type: ApplicationFiled: March 10, 2005Publication date: March 23, 2006Applicant: KANZAKI KOKYUKOKI MFG. CO., LTD.,Inventors: Shigeaki NAKAGAWA, Toshio IMANAKA
-
Patent number: 7004800Abstract: A power generating and propelling system of a vessel has an electric power generating device (10) installed between an internal combustion engine (2) and a transmission (3). A stator (11) of the generating device (10) is built in a flywheel housing (21a) of the internal combustion engine (2) or a casing (10a) connected to the flywheel housing (21a). A rotary shaft of the generating device (10) is disposed coaxially or eccentrically parallel to a crankshaft (2a) of the internal combustion engine (2) or an input shaft (3a) of the transmission (3) in the same direction with the crankshaft (2a) of the internal combustion engine (2).Type: GrantFiled: February 27, 2004Date of Patent: February 28, 2006Assignee: Yanmar Co., Ltd.Inventors: Hisanori Mori, Mitsuhiro Nakagaki, Hiroyasu Yukino, Takayuki Toda, Junichi Hitachi, Toshio Imanaka
-
Publication number: 20050287883Abstract: A power generating and propelling system of a vessel has an electric power generating device (10) installed between an internal combustion engine (2) and a transmission (3). A stator (11) of the generating device (10) is built in a flywheel housing (21a) of the internal combustion engine (2) or a casing (10a) connected to the flywheel housing (21a). A rotary shaft of the generating device (10) is disposed coaxially or eccentrically parallel to a crankshaft (2a) of the internal combustion engine (2) or an input shaft (3a) of the transmission (3) in the same direction with the crankshaft (2a) of the internal combustion engine (2).Type: ApplicationFiled: September 6, 2005Publication date: December 29, 2005Inventors: Hisanori Mori, Mitsuhiro Nakagaki, Hiroyasu Yukino, Takayuki Toda, Junichi Hitachi, Toshio Imanaka
-
Publication number: 20040209532Abstract: A power generating and propelling system of a vessel has an electric power generating device (10) installed between an internal combustion engine (2) and a transmission (3). A stator (11) of the generating device (10) is built in a flywheel housing (21a) of the internal combustion engine (2) or a casing (10a) connected to the flywheel housing (21a). A rotary shaft of the generating device (10) is disposed coaxially or eccentrically parallel to a crankshaft (2a) of the internal combustion engine (2) or an input shaft (3a) of the transmission (3) in the same direction with the crankshaft (2a) of the internal combustion engine (2).Type: ApplicationFiled: February 27, 2004Publication date: October 21, 2004Inventors: Hisanori Mori, Mitsuhiro Nakagaki, Hiroyasu Yukino, Takayuki Toda, Junichi Hitachi, Toshio Imanaka
-
Patent number: 6679740Abstract: In carrying out a crash-go-astern operation for switching operating means (2a) of a hydraulic clutch mechanism (100) provided to a marine reduction and reverse gear (1) from a forward setting (F) to a reverse setting in a stroke so as to abruptly stop in traveling ahead, a propeller speed (PN) is detected in neutral (N) halfway through the switching and initial fitting pressure (Po) of a reverse driving clutch (90) is calculated by using a map of the initial fitting pressure (Po) of reverse clutch pressure (Pr) formed according to the propeller speed based on a ship load (SL) in advance before switching to the reverse setting (R), the reverse driving clutch (90) is set at the calculated initial fitting pressure (Po) when the operating means is switched to the reverse setting (R), and then the reverse clutch pressure (Pr) is increased to a maximum value (Pm) as an engine speed (EN) increases.Type: GrantFiled: June 4, 2002Date of Patent: January 20, 2004Assignee: Yanmar Diesel Engine Co., Ltd.Inventors: Toshio Imanaka, Kazuyoshi Harada, Takashi Miyamoto, Takayuki Sakamoto