Patents by Inventor Yoshifumi Yamada
Yoshifumi Yamada 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: 9385378Abstract: Provided herein is a lead-acid battery for which the risk of breakage of a current collecting lug part of a plate while in use is eliminated by simple means. At least a positive plate group of the lead-acid battery includes: one or more plates each including a current collector having a current collecting portion formed by expanding or punching a lead alloy sheet manufactured by cold rolling, and one or more current collecting lug parts unitarily formed with the current collecting portion; and a strap formed by a cast-on strap casting method and coupled to the one or more current collecting lug parts. The current collecting lug part is formed with an elongated protrusion extending in a direction away from the current collecting portion. The elongated protrusion continuously extends in a direction toward the current collecting portion of the plate from inside the strap.Type: GrantFiled: March 6, 2015Date of Patent: July 5, 2016Assignee: Hitachi Chemical Company, Ltd.Inventors: Hiroki Tsuji, Masatoshi Miyatsuka, Kazuya Sasaki, Naoki Tsuji, Kenichi Maeda, Yoshifumi Yamada
-
Publication number: 20150180048Abstract: Provided herein is a lead-acid battery for which the risk of breakage of a current collecting lug part of a plate while in use is eliminated by simple means. At least a positive plate group of the lead-acid battery includes: one or more plates each including a current collector having a current collecting portion formed by expanding or punching a lead alloy sheet manufactured by cold rolling, and one or more current collecting lug parts unitarily formed with the current collecting portion; and a strap formed by a cast-on strap casting method and coupled to the one or more current collecting lug parts. The current collecting lug part is formed with an elongated protrusion extending in a direction away from the current collecting portion. The elongated protrusion continuously extends in a direction toward the current collecting portion of the plate from inside the strap.Type: ApplicationFiled: March 6, 2015Publication date: June 25, 2015Inventors: Hiroki TSUJI, Masatoshi MIYATSUKA, Kazuya SASAKI, Naoki TSUJI, Kenichi MAEDA, Yoshifumi YAMADA
-
Patent number: 8999572Abstract: Provided herein is a lead-acid battery for which the risk of breakage of a current collecting lug part of a plate while in use is eliminated by simple means. At least a positive plate group of the lead-acid battery includes: one or more plates each including a current collector having a current collecting portion formed by expanding or punching a lead alloy sheet manufactured by cold rolling, and one or more current collecting lug parts unitarily formed with the current collecting portion; and a strap formed by a cast-on strap casting method and coupled to the one or more current collecting lug parts. The current collecting lug part is formed with an elongated protrusion extending in a direction away from the current collecting portion. The elongated protrusion continuously extends in a direction toward the current collecting portion of the plate from inside the strap.Type: GrantFiled: March 14, 2011Date of Patent: April 7, 2015Assignee: Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hiroki Tsuji, Masatoshi Miyatsuka, Kazuya Sasaki, Naoki Tsuji, Kenichi Maeda, Yoshifumi Yamada
-
Publication number: 20120091665Abstract: A seal structure for sealing a penetrated portion through which a rotary shaft passes between a cover member and the rotary shaft. A seal member is fitted onto the rotary shaft in a manner that the rotary shaft can rotate relative to the seal member, and the elastic buffer member is provided for connection between the seal member and the cover member at the penetrated portion. The seal structure can keep sealing performance by reducing the influence of movements such as vibration and thermal expansion of the cover member and the influence of process tolerance of the cover member on the sealing performance of the seal member attached to the penetrated portion between the cover member and the rotary shaft penetrating the cover member.Type: ApplicationFiled: March 18, 2010Publication date: April 19, 2012Applicants: Uchiyama Manufacturing Corp., Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Matsuhiro Okuda, Tomokazu Sumida, Kazuya Yoshijima, Takahiro Yamazaki, Yoshifumi Yamada, Hiroyuki Matsuoka, Hirotaka Kurita, Susumu Fujita, Yasuhiko Ohashi
-
Publication number: 20120064402Abstract: Provided herein is a lead-acid battery for which the risk of breakage of a current collecting lug part of a plate while in use is eliminated by simple means. At least a positive plate group of the lead-acid battery includes: one or more plates each including a current collector having a current collecting portion formed by expanding or punching a lead alloy sheet manufactured by cold rolling, and one or more current collecting lug parts unitarily formed with the current collecting portion; and a strap formed by a cast-on strap casting method and coupled to the one or more current collecting lug parts. The current collecting lug part is formed with an elongated protrusion extending in a direction away from the current collecting portion. The elongated protrusion continuously extends in a direction toward the current collecting portion of the plate from inside the strap.Type: ApplicationFiled: March 14, 2011Publication date: March 15, 2012Inventors: Hiroki TSUJI, Masatoshi Miyatsuka, Kazuya Sasaki, Naoki Tsuji, Kenichi Maeda, Yoshifumi Yamada
-
Patent number: 8036839Abstract: A battery state determining apparatus is provided which can accurately determine a state of a lead battery in an automotive vehicle. The apparatus calculates a corrected engine starting voltage Vst1 from an open-circuit voltage (OCV) measuring section that measures the open circuit voltage Vst of the lead battery at an engine starting time in accordance with a temperature of the vehicle. The apparatus further calculates a battery determination voltage Vst_th representing a voltage of the lead battery at an engine starting time when a growth rate of internal resistance of the lead battery reaches a predetermined value from the open-circuit voltage OCV. The apparatus then determines the battery state of the lead battery by determining whether the corrected engine starting voltage Vst1 is larger than the battery determination voltage Vst_th and whether the corrected engine starting voltage Vst1 belongs to a predetermined region on a characteristic map.Type: GrantFiled: March 8, 2007Date of Patent: October 11, 2011Assignee: Shin-Kobe Electric Machinery Co., Ltd.Inventors: Yoshiaki Machiyama, Keizo Yamada, Yoshifumi Yamada, Takashi Hara
-
Publication number: 20090088994Abstract: The present invention provides a battery state determining apparatus which can determine a battery state of a lead battery from an engine starting voltage accurately considering influence of a temperature of a vehicle. An engine starting voltage Vst1 obtained by correcting an engine starting voltage Vst of a lead battery at an engine starting time is calculated based upon an open-circuit voltage OCV and a temperature of a vehicle (S112), a battery determination voltage Vst_th representing a voltage of the lead battery at an engine starting time when a growth rate of internal resistance of the lead battery reaches a predetermined value from the open-circuit voltage OCV is calculated (S126), and a battery state of the lead battery is determined by determining whether an engine starting voltage Vst1 belongs to a predetermined region on a characteristic map (S132).Type: ApplicationFiled: March 8, 2007Publication date: April 2, 2009Applicant: SHIN-KOBE ELECTRIC MACHINERY CO., LTD.Inventors: Yoshiaki Machiyama, Keizo Yamada, Yoshifumi Yamada, Takashi Hara
-
Publication number: 20050221191Abstract: An object of the present invention is to inhibit intergranular corrosion of a lead alloy by grain refining, and to prolong the life and improve the reliability of a lead battery using the alloy for a positive current collector in the battery. The intergranular corrosion of the lead alloy is inhibited by adding Sr to a Pb—Sn alloy to refine a cast structure and the recrystallized structure of a rolled material, and the hardness is improved by further adding Ca, Ba and Te. In addition, the rolled sheet of the lead alloy is used in the positive current collector of the lead storage battery.Type: ApplicationFiled: February 10, 2005Publication date: October 6, 2005Inventors: Yasuo Kondo, Kyoko Honbo, Masanori Sakai, Yasuhisa Aono, Tokiyoshi Hirasawa, Masayuki Terada, Yoshifumi Yamada, Takayuki Kimura
-
Patent number: 6370263Abstract: There is disclosed a method of registering palm imprints of individuals to be identified to authenticate the individuals. Each palm imprint is divided into parts having regions with predetermined positions and sizes. Feature points are extracted from the parts of the imprint. The obtained feature information is registered as information for identity of individuals.Type: GrantFiled: January 14, 1999Date of Patent: April 9, 2002Assignee: NEC CorporationInventors: Seiichi Hiratsuka, Teruhito Amanai, Yoshifumi Yamada
-
Patent number: 5435284Abstract: A throttle control apparatus includes a throttle opening adjusting device for regulating the throttle valve opening in such a manner that the throttle valve is located in a first position for assuring sufficient opening of the throttle valve upon ignition, with the throttle valve being rotatable after establishment of ignition or combustion. The throttle valve is then moved to a second position located between the first position and a fully closed position upon an electric failure.Type: GrantFiled: November 2, 1993Date of Patent: July 25, 1995Assignee: Aisin Seiki Kabushiki KaishaInventors: Masaru Shimizu, Masaharu Hayashi, Mitsuo Kikkawa, Shoichi Doi, Yoshifumi Yamada, Shinichiro Tanaka, Ichiro Hosotani
-
Patent number: 5430711Abstract: A group modulator provided a plurality of digitally modulated signals with frequency division multiplex, having a time division multiplexer (11) for multiplexing a plurality of input data (#l through #n). A mapping circuit (12) provides an I-channel signal and a Q-channel signal according to a pattern of the multiplexed signal and the modulation system. A pulse shaping circuit (13) restricts bandwidth of the I-channel signal and the Q-channel signal. A frequency shift circuit (14) shifts frequency of the I-channel signal and the Q-channel signal by the frequency defined by the carrier control signal (i) for each input data. An accumulator (21,22) accumulates each of the I-channel signal and the Q-channel signal of the output of the frequency shift circuit (14) during a predetermined period (T). A D/A converter (31, 32) converts the output of the accumulator from digital form to analog form. A low pass filter (41, 42) is provided at the output of the D/A converter.Type: GrantFiled: February 25, 1994Date of Patent: July 4, 1995Assignee: Nippon Telegraph & Telephone CorporationInventors: Yoshifumi Yamada, Tadashi Shibato
-
Patent number: 5207714Abstract: An exhausted gas recycle device which is installed in an intake manifold is comprised of an inlet portion which penetrates into the intake manifold and communicates with an exhaust manifold and at least one hole formed on the inlet portion in the intake manifold.Type: GrantFiled: January 24, 1992Date of Patent: May 4, 1993Assignee: Aisin Seiki Kabushiki KaishaInventors: Minoru Hayashi, Nakai Kiyotaka, Yoshifumi Yamada
-
Patent number: 4733873Abstract: A mechanical seal, such as may advantageously be used for an automotive water pump or the like, in which the amount of frictional torque is significantly reduced. The seal includes a follower ring through which a rotary shaft rotatably passes and a seat ring rotated by the shaft. Recesses are formed in the abutting surface of at least one of the two rings, each recess being defined by a forward edge and a rear edge and opening only to the inner circumferential surface of the rings. The forward edge of each recess is inclined from the inner circumferential surface to the rear side in the direction of rotation of the follower ring relative to the seat ring, and the rear edge extends from the outer end of the forward edge along a radial line extending through substantially the center of the shaft.Type: GrantFiled: September 25, 1985Date of Patent: March 29, 1988Assignees: Taiho Kogyo Co., Ltd., Aisin Seiki Kabushiki KaishaInventors: Akira Takenaka, Masanori Hatanaka, Kuniharu Suzuki, Junichi Ito, Yoshifumi Yamada, Hironori Yoshida
-
Patent number: 4651098Abstract: The phase of nuclear magnetization in a target placed in a homogeneous magnetic field and excited by a high-frequency magnetic field is encoded by applying a specifying magnetic field with a non-linear gradient thereto, and the specifying magnetic field is scanned across the target, and the encoded NMR signals are received and processed so as to produce an image of the distribution of nuclear magnetic substance in the target.Type: GrantFiled: October 2, 1984Date of Patent: March 17, 1987Assignee: Utsunomiya UniversityInventors: Yoshifumi Yamada, Kunio Tanaka, Zenwemon Abe
-
Patent number: 4594550Abstract: The disclosed method of scanning a specifying magnetic field for nuclear magnetic resonance (NMR) imaging comprises steps of generating the specifying magnetic field by synthesis of a static magnetic field and a magnetic field produced by a group of magnetomotive forces, and moving the center of the specifying magnetic field by superposing a scanning magnetic field from a scanner coil in a certain direction of the magnetic field of the group of magnetomotive forces.Type: GrantFiled: September 1, 1983Date of Patent: June 10, 1986Assignee: Utsunomiya UniversityInventors: Yoshifumi Yamada, Kunio Tanaka, Zenwemon Abe
-
Patent number: 4573015Abstract: The disclosed method comprises steps of alternately applying a strong static magnetic field and a weak homogeneous static magnetic field to a body being measured (target), selectively exciting nuclear magnetic resonance (NMR) at a specific portion of the target by applying a high-frequency magnetic field and a specifying magnetic field thereto, detecting NMR signals from the thus excited portion, and scanning the target by repeating the selective excitation and the detection.Type: GrantFiled: August 23, 1983Date of Patent: February 25, 1986Assignee: Asahikawa Medical CollegeInventors: Zenwemon Abe, Yoshifumi Yamada, Kunio Tanaka