Patents by Inventor Tsutomu Tomizawa
Tsutomu Tomizawa 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: 20240129430Abstract: According to one embodiment, a display device includes a display panel having a display area where an image is displayed, a plurality of cameras provided at positions overlapping with the display area in plan view to capture a user opposed to the display device as a subject, a controller selecting one of the plurality of cameras as a camera to capture the subject, based on positions of eyes of a person included in the image displayed in the display area.Type: ApplicationFiled: October 16, 2023Publication date: April 18, 2024Inventors: Kazunari TOMIZAWA, Naoshi GOTO, Tsutomu HARADA, Junji KOBASHI
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Publication number: 20240105135Abstract: A display device includes: a display panel with pixels arranged in a first direction and a second direction; and a light source. Each pixel includes: a first sub-pixel including a color filter for a first color; and a second sub-pixel arranged adjacent to the first sub-pixel in the first direction and including a color filter for a complementary color between a second color and a third color. The light source includes: a first light emitter configured to emit light in the first color; a second light emitter configured to emit light in the second color; and a third light emitter configured to emit light in the third color. One frame period includes: a first light emission period of causing the first and second light emitters to emit light simultaneously; and a second light emission period of causing the first and third light emitters to emit light simultaneously.Type: ApplicationFiled: September 21, 2023Publication date: March 28, 2024Inventors: Kazunari TOMIZAWA, Tsutomu HARADA
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Publication number: 20240078965Abstract: A display device includes a plurality of light-emitting elements, and a control circuit configured to control drive of the light-emitting elements. The control circuit divides one frame period into a plurality of subframe periods having different lengths and controls light emission and non-emission of the light-emitting elements for each of the subframe periods.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Inventors: Kazunari TOMIZAWA, Kazuhiko SAKO, Tsutomu HARADA
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Patent number: 11385094Abstract: A fluid level detection apparatus includes a vibrator, a vibration sensor, and a controller. The vibrator is configured to apply a vibration to a container that contains a fluid. The vibration sensor is configured to detect a vibration wave that is generated by the vibrator and propagates through the container. The controller is configured to control an operation of the vibrator and perform arithmetic processing on a detection signal obtained from the vibration sensor. The vibrator and the vibration sensor are provided on an outer wall surface of the container at respective positions that interpose, from above and below, a fluid level of the fluid provided in the container. The controller is configured to calculate a height of the fluid level, on the basis of the vibration wave detected by the vibration sensor.Type: GrantFiled: January 27, 2020Date of Patent: July 12, 2022Assignee: SUBARU CORPORATIONInventors: Tsutomu Tomizawa, Iwao Murata, Kohei Takahashi, Keiji Hori
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Publication number: 20200292371Abstract: A fluid level detection apparatus includes a vibrator, a vibration sensor, and a controller. The vibrator is configured to apply a vibration to a container that contains a fluid. The vibration sensor is configured to detect a vibration wave that is generated by the vibrator and propagates through the container. The controller is configured to control an operation of the vibrator and perform arithmetic processing on a detection signal obtained from the vibration sensor. The vibrator and the vibration sensor are provided on an outer wall surface of the container at respective positions that interpose, from above and below, a fluid level of the fluid provided in the container. The controller is configured to calculate a height of the fluid level, on the basis of the vibration wave detected by the vibration sensor.Type: ApplicationFiled: January 27, 2020Publication date: September 17, 2020Applicant: SUBARU CORPORATIONInventors: Tsutomu TOMIZAWA, Iwao MURATA, Kohei TAKAHASHI, Keiji HORI
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Patent number: 6709618Abstract: A method of manufacturing a resin spring which can improve close contact between a spring body and inner-pressure generating members to reduce variations in load characteristics due to repeated deformation during use. The method of manufacturing a resin spring includes the steps of forming an elastomer preform having inner closed chambers, compressing the preform by applying an external force to produce a permanently deformed portion to form a spring body having at least one permanently deformed inner chamber, injecting an inner-pressure generating resin into each of the at least one permanently deformed inner chamber of the spring body, and molding the inner-pressure generating resin into an inner-pressure generating member by using the spring body as part of a die.Type: GrantFiled: November 26, 2001Date of Patent: March 23, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 6416068Abstract: An inexpensive damping force generating mechanism capable of generating both a compression side damping force and a tensile side damping force has a simple, lightweight structure. The damping force generating mechanism provides an inexpensive axle suspension capable of simplifying the suspension structure, reducing the weight, and effectively utilizing space. The damping force generating mechanism includes an elastic body which generates a damping force when being pressed. An internal pressure generating member is inserted in the elastic body and resists the pressing force.Type: GrantFiled: November 29, 2000Date of Patent: July 9, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Publication number: 20020030304Abstract: A method of manufacturing a resin spring which can improve close contact between a spring body and inner-pressure generating members to reduce variations in load characteristics due to repeated deformation during use. The method of manufacturing a resin spring includes the steps of forming an elastomer preform having inner closed chambers, inserting inner-pressure generating members into the inner closed chambers of the preform, and compressing the preform with the inner-pressure generating members therein by applying an external force to produce a permanently deformed portion having an oriented molecular structure.Type: ApplicationFiled: November 26, 2001Publication date: March 14, 2002Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 6337043Abstract: A method of manufacturing a resin spring which can improve close contact between a spring body and inner-pressure generating members to reduce variations in load characteristics due to repeated deformation during use. The method of manufacturing a resin spring includes the steps of forming an elastomer preform having inner closed chambers, inserting inner-pressure generating members into the inner closed chambers of the preform, and compressing the preform with the inner-pressure generating members therein by applying an external force to produce a permanently deformed portion having an oriented molecular structure.Type: GrantFiled: March 30, 1999Date of Patent: January 8, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Publication number: 20010042940Abstract: A method of manufacturing a resin spring which can improve close contact between a spring body and inner-pressure generating members to reduce variations in load characteristics due to repeated deformation during use. The method of manufacturing a resin spring includes the steps of forming an elastomer preform having inner closed chambers, inserting inner-pressure generating members into the inner closed chambers of the preform, and compressing the preform with the inner-pressure generating members therein by applying an external force to produce a permanently deformed portion having an oriented molecular structure.Type: ApplicationFiled: March 30, 1999Publication date: November 22, 2001Inventors: HIROKI MAKINO, TSUTOMU TOMIZAWA
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Publication number: 20010000936Abstract: An inexpensive damping force generating mechanism capable of generating both a compression side damping force and a tensile side damping force has a simple, lightweight structure. The damping force generating mechanism provides an inexpensive axle suspension capable of simplifying the suspension structure, reducing the weight, and effectively utilizing space. The damping force generating mechanism includes an elastic body which generates a damping force when being pressed. An internal pressure generating member is inserted in the elastic body and resists the pressing force.Type: ApplicationFiled: November 29, 2000Publication date: May 10, 2001Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 6196531Abstract: To provide a compression spring formed of an elastic body made from a resin or rubber which is capable of maintaining its shape upon deformation without the use of any supporting member, thereby always ensuring a specific load-deformation characteristic. A compression spring of the present invention includes a cylindrical spring main body, wherein compression energy generated when the compression spring is pressed in the radial direction is absorbed by elastic deformation of the cylindrical spring main body. In this compression spring, a base having a flat bottom surface swelled along a plane perpendicular to the pressing direction is formed on the pressing force receiving side of the spring main body. Furthermore, a reinforcing wall for connecting the swelled portion of the base to a side portion of the cylindrical spring main body is formed integrally with the spring main body.Type: GrantFiled: February 19, 1999Date of Patent: March 6, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 6186526Abstract: An inexpensive damping force generating mechanism capable of generating both a compression side damping force and a tensile side damping force has a simple, lightweight structure. The damping force generating mechanism provides an inexpensive axle suspension capable of simplifying the suspension structure, reducing the weight, and effectively utilizing space. The damping force generating mechanism includes an elastic body which generates a damping force when being pressed. An internal pressure generating member is inserted in the elastic body and resists the pressing force.Type: GrantFiled: March 18, 1998Date of Patent: February 13, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 5749996Abstract: A reclaimed joint sheet used as a gasket or packing member for automobiles, ships and the like consists of a first layer of a joint sheet made from a given composition, a second layer of a joint sheet made by mixing finely pulverized pieces of the joint sheet after the punching out of the joint sheet having a given particle size with the same composition for the formation of the joint sheet, and a third layer of the same joint sheet as the first layer.Type: GrantFiled: May 13, 1997Date of Patent: May 12, 1998Assignees: Honda Giken Kogyo Kabushiki Kaisha, Nippon Leakless Industry Co., Ltd.Inventors: Tsutomu Tomizawa, Yoshihiko Tatemichi, Ken Fujiwara, Masamichi Hoshi, Hiroyuki Nakano
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Patent number: 5658657Abstract: A reclaimed joint sheet used as a gasket or packing member for automobiles, ships and the like consists of a first layer of a joint sheet made from a given composition, a second layer of a joint sheet made by mixing finely pulverized pieces of the joint sheet after the punching out of the joint sheet having a given particle size with a composition for the formation of the joint sheet, and a third layer of a joint sheet containing the same components as the first layer.Type: GrantFiled: May 26, 1995Date of Patent: August 19, 1997Assignees: Honda Giken Kogyo Kabushiki Kaisha, Nippon Leakless Industry Co., Ltd.Inventors: Tsutomu Tomizawa, Yoshihiko Tatemichi, Ken Fujiwara, Masamichi Hoshi, Hiroyuki Nakano
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Patent number: 5292579Abstract: A compressed sheet comprises: base fibers constituted by inorganic fibers other than asbestos, or organic fibers, or a combination of both; a rubber; rubber chemicals; and fillers. In the compressed sheet a material with both smoothing and reinforcing effects is exposed at least to one of the surfaces of the compressed sheet. A method of manufacturing a compressed sheet comprises the steps of processing a composition for forming the compressed sheet by feeding it into a pair of rolls comprising a hot roll and a cold roll, thereby laminating the composition into a sheet-shaped material on the hot roll, and then peeling off the sheet-shaped laminated material. In this method the composition is fed into the rolls such that a material with both smoothing and reinforcing effects is exposed at least to that surface of the sheet-shaped laminated material which faces the cold roll.Type: GrantFiled: June 12, 1991Date of Patent: March 8, 1994Assignees: Honda Giken Kogyo Kabushiki Kaisha, Nippon Leakless Ind. Co., Ltd.Inventors: Hiromi Kitayama, Tsutomu Tomizawa, Ken Fujiwara, Fumiya Shigeta, Hiroyuki Nakano