Patents by Inventor Tsutomu Miyakawa
Tsutomu Miyakawa 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: 20210163267Abstract: A work machine includes a lower traveling structure, an upper swing structure mounted on the lower traveling structure via a swing mechanism, an attachment attached to the upper swing structure, a lifting magnet attached to the attachment, a hardware processor configured to calculate the weight of an object lifted by the lifting magnet, and a display device configured to display the weight of the object calculated by the hardware processor.Type: ApplicationFiled: January 26, 2021Publication date: June 3, 2021Inventors: Yoshimitsu YUZAWA, Tsutomu MIYAKAWA, Minoru OKUYAMA
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Patent number: 5555864Abstract: The electric source control device of an internal combustion engine drive vehicle according to the present invention is characterized in that it consists of a primary battery (1) and a secondary battery (2) which are mounted on the internal combustion engine drive vehicle, which are provided with a common terminal (3) of (+) polarity and two independent terminals (4, 5) of (-) polarity and which supply an engine starter and loads with electricity, and a control circuit in which when an engine switch (9) is not connected with the starting point the terminal (4) of (-) polarity of the primary battery (1) is disconnected from that (5) of the secondary battery (2) to make only one of both the batteries and in which when the engine switch (9) is connected with the starting point both the batteries (1, 2) supply the engine starter (6) and the loads in parallel with electricity, either of the terminals (4, 5) of (-) polarity of both the batteries (1, 2) being connected with the terminals of (+) polarity of the enginType: GrantFiled: August 2, 1995Date of Patent: September 17, 1996Assignee: Hukuto Manufacturing Co., Ltd.Inventors: Tsutomu Miyakawa, Hideki Nishihara, Takaaki Kuga, Kazunori Shinohara, Makoto Ishikawa
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Patent number: 5159585Abstract: A multi-disk player system including a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays.Type: GrantFiled: November 2, 1990Date of Patent: October 27, 1992Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa
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Patent number: 4969138Abstract: A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays.Type: GrantFiled: August 22, 1988Date of Patent: November 6, 1990Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa
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Patent number: 4926406Abstract: A multidisk player comprising a housing, a playback mechanism, a magazine capable of containing a plurality of disks arranged in order, the magazine being detachably fitted in a predetermined magazine loader within the housing, a single adapter detachably fitted in the loader, the single adapter being capable of being loaded replaceably with one disk, disk carrier means for carrying the magazine and the disk in the single adapter to a playback position, and a drive unit for driving the magazine and the single adapter outwardly from the loader, the single adapter comprising a first member directly fitted in the loader, a second member for being loaded with the disk, the second member being movable within a fixed range relative to the first member and along the direction where said first member is fitted in the loader, and a drive unit for driving the second member.Type: GrantFiled: July 14, 1986Date of Patent: May 15, 1990Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Tsutomu Miyakawa, Takahiro Okajima, Masahiko Miyake
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Patent number: 4811319Abstract: A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays.Type: GrantFiled: June 17, 1987Date of Patent: March 7, 1989Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa
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Patent number: 4809252Abstract: Disclosed is a disk holder adapted to be inserted and fitted into a loading means of a disk player. The disk holder supplys a disk to the disk player in response to the operation of the player. The disk holder includes a housing for holding a plurality of disks, a plurality of plate-shape trays each loading each of the disks on each principal face thereof. Each of the trays is provided ejectable from the retractable in the housing along the principal face. The disk holder further includes flexible members positioned confronting with each of the disk loading face and projecting from the principal face of neighboring tray.Type: GrantFiled: October 2, 1986Date of Patent: February 28, 1989Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Tsutomu Miyakawa, Takahiro Okajima, Masahiko Miyake
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Patent number: 4794580Abstract: An optical pickup system in which a tracking objective lens is moved by opposed magnetic coils attached to the lens along the axis of the lens and in the transverse direction across the recording tracks. A servo system on a fixed base supplies current to the movable coils by lead wires which are connected at the middle to a fixed vibration absorbing material, such as polyurethane foam.Type: GrantFiled: August 25, 1986Date of Patent: December 27, 1988Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Tsutomu Miyakawa, Takahiro Okajima, Masahiko Miyake
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Patent number: 4788673Abstract: A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays.Type: GrantFiled: July 31, 1987Date of Patent: November 29, 1988Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa
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Patent number: 4754448Abstract: A disk player in which a clamping member clamps a disk against a turntable. The clamping member has two annular bosses and the turntable has one annular boss located between those of the clamping member. A projection of the clamping member has a projection that fits within a slightly larger recess in the turntable. A ball bearing in the projection moves towards the turntable and forces radially outwardly three ball bearings which then contact the side walls of the recess.Type: GrantFiled: July 23, 1986Date of Patent: June 28, 1988Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Tsutomu Miyakawa, Takahiro Okajima, Tsuneo Shimura
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Patent number: 4730291Abstract: A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays.Type: GrantFiled: March 7, 1986Date of Patent: March 8, 1988Assignee: Pioneer Electronic CorporationInventors: Yuji Ikedo, Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa
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Patent number: 4539669Abstract: A front-loading record player comprises a slide base carrying thereon a turntable and movable back and forth with respect to a player cabinet; a driving cam including a front slant retainer section and a rear linear section, the linear section extending in parallel with the moving direction of said slide base and the driving cam being provided on said slide base; a guide cam including a front recess portion and a rear linear portion, the linear portion extending in parallel with the moving direction of the slide base and the guide cam being provided on the player cabinet; and a front door opening/closing drive member for opening and closing a front door of the player cabinet, the drive member being held between the driving cam and the guide cam. The front door opening/closing drive member and the front door are drivingly coupled to each other.Type: GrantFiled: January 17, 1983Date of Patent: September 3, 1985Assignee: Pioneer Electric CorporationInventors: Tsutomu Miyakawa, Junji Yamane, Masahiro Takagi, Tomoyoshi Arai, Haruhiko Tanaka, Yuji Morita, Satoshi Sakurai