Patents by Inventor Kozo Ezawa

Kozo Ezawa 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).

  • Publication number: 20100017813
    Abstract: A disk drive includes: a pair of guide walls, which is arranged in the vicinity of the holder opening of a cartridge holder to define a direction in which a disk cartridge is supposed to be inserted; a first opening/closing lever, which has a first engaging portion that engages with a portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected; and a second opening/closing lever, which has a second engaging portion that engages with another portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected. The first and second opening/closing levers rotate so as to leave a broader gap between the first and second engaging portions than between the guide walls when the drive gets loaded with the disk cartridge, thereby opening a window in the disk cartridge.
    Type: Application
    Filed: June 1, 2007
    Publication date: January 21, 2010
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa
  • Publication number: 20090310460
    Abstract: An optical disc apparatus according to the present invention includes a disc rotation mechanism 2 for allowing an optical disc 1 having an information recording face to be placed thereon and rotating the optical disc 1; an optical pickup 3 including an engaging section and irradiating the information recording face with a light beam to perform at least one of information recording and information reproduction; a base main body 13 for rotatably supporting the optical pickup and having the disc rotation mechanism; a driving source 5, supported by the base main body, for generating a force for rotating the optical pickup; and a driving force transmission mechanism 610 supported by the base main body, including a worm, and engaged with the engaging section to transmit a driving force of the driving source to the optical pickup, thereby rotating the optical pickup.
    Type: Application
    Filed: April 18, 2008
    Publication date: December 17, 2009
    Inventors: Kozo Ezawa, Masahiro Inata, Teruyuki Takizawa, Hironori Tomita
  • Publication number: 20090235294
    Abstract: A disk cartridge includes: a pair of disk housing portions, housing a disk entirely when put together; a supporting base member with a disk housing rotating and supporting portion for rotating and supporting the housing portions to open or shut a window to the disk such that the disk gets chucked externally, and a head can access the disk and read and write information from/on the storage layer thereof, though the window; and a locking unit including a pair of locking lever portions to keep the housing portions closed from rotating and a locking lever supporting portion supporting the lever portions rotatably and attached to the base member, wherein the pair of disk housing portions open the window wide enough to remove the disk while the lock unit is not inserted into the supporting base member, and contact with the lock unit and have their angle of rotation limited while the lock unit is inserted into the supporting base member, thereby controlling the size of the window such that the disk is unremovable.
    Type: Application
    Filed: October 11, 2007
    Publication date: September 17, 2009
    Inventors: Kozo Ezawa, Masahiro Inata, Teruyuki Takizawa, Hironori Tomita
  • Publication number: 20090199225
    Abstract: A disk drive includes: a pair of guide walls, which is arranged in the vicinity of the holder opening of a cartridge holder to define a direction in which a disk cartridge is supposed to be inserted; a first opening/closing lever, which has a first engaging portion that engages with a portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected; and a second opening/closing lever, which has a second engaging portion that engages with another portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected. The pivots of the first and second opening/closing levers are arranged opposite to the holder opening. The first and second opening/closing levers rotate so as to leave a broader gap between the first and second engaging portions than between the guide walls when the drive gets loaded with the disk cartridge, thereby opening a window in the disk cartridge.
    Type: Application
    Filed: June 1, 2007
    Publication date: August 6, 2009
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa
  • Publication number: 20090125933
    Abstract: A disk cartridge according to the present invention includes first and second disk storage portions, each of which has a space to partially store a disk with at least one data storage side. When closed up, the first and second disk storage portions enclose the disk entirely. The disk cartridge further includes a supporting base member with a disk storage portion rotation supporting portion that supports rotatably the first and second disk storage portions so as to make or cover an opening with respect to the disk. The opening is used to get the disk chucked externally and to allow a head to access the data storage side of the disk and read and/or write data from/on that side. At least a portion of the supporting base member overlaps with the first and second disk storage portions so as to prevent the first and second disk storage portions from moving perpendicularly to the disk.
    Type: Application
    Filed: April 26, 2007
    Publication date: May 14, 2009
    Inventors: Teruyuki Takizawa, Masahiro Inata, Kozo Ezawa
  • Publication number: 20090120972
    Abstract: A garment folding apparatus according to the present invention includes a folding mechanism including a width direction folding section and a length direction folding section for folding a garment hung on a hanger in a horizontal direction and a vertical direction into a predetermined size. The width direction folding section includes a pair of clamps for picking two horizontal-direction ends of the garment hung on the hanger, and a pair of folding width determination sections. The clamps pivot while picking the garment so as to wrap the garment around the folding width determination sections and fold the garment along the folding width determination sections.
    Type: Application
    Filed: July 4, 2006
    Publication date: May 14, 2009
    Inventors: Yoshito Saji, Teruyuki Takizawa, Kozo Ezawa, Masanari Mohri
  • Publication number: 20090064215
    Abstract: A power transmission member is provided with which it is possible to lessen the impact force produced when the head of a disk device hits part of a base member or the like. The power transmission member is a power transmission member of a mechanism for moving a head, used for recording on or reproducing from a disk, relative to a base member in a disk device, comprising a fixed component for attaching to a head, a power transmission component for receiving drive from a motor serving as a drive source, a linking component for linking the fixed component and the power transmission component, and a contacting component. The contacting component is fixed to the power transmission component, and comes into contact with part of the base member, or part of a member fixed to the base member, at least one end of the movement range of the head.
    Type: Application
    Filed: April 18, 2006
    Publication date: March 5, 2009
    Inventors: Kozo Ezawa, Kisaburo Kurobe, Tomohiro Sasao
  • Publication number: 20090064214
    Abstract: A disk drive according to the present invention includes: a mechanical chassis; a pickup for reading and/or writing information from/on a disk storage medium; a rotation drive section with a turntable to mount and rotate the storage medium thereon; a pickup supporting member having a bottom portion for supporting the pickup and the rotation drive section and a standup wall that stands upright from the bottom portion toward the turntable, the pickup supporting member being supported on the mechanical chassis so as to turn around an axis of rotation that is defined through the standup wall; and a pickup raising/lowering portion, which is provided for the mechanical chassis in order to drive the pickup supporting member to either a first position in which the pickup is ready to perform a read or write operation on the storage medium that is mounted on the turntable or a second position in which the turntable has been retracted so as to avoid contact with the storage medium being inserted or ejected.
    Type: Application
    Filed: April 11, 2006
    Publication date: March 5, 2009
    Inventors: Yoshito Saji, Teruyuki Takizawa, Kozo Ezawa
  • Publication number: 20080282276
    Abstract: A disk apparatus includes: an apparatus body including a disk drive portion for housing a disk medium having an information recording surface and for recording and/or reproducing information; and a lid body including a display for displaying information, and closed and opened with respect to the apparatus body in such a way that the display is postured face down and up. The apparatus body further includes: a drive-portion cover which is movable in a bottom direction of the apparatus body and inserts and ejects the disk medium into and from the disk drive portion; and a lock hook and a cover hook locking the disk medium housed in the apparatus body. A locking state of the lock hook and the cover hook is kept when the lid body is in the open state with respect to the apparatus body.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Inventors: Kozo EZAWA, Masahiro Inata, Teruyuki Takizawa, Hironori Tomita
  • Publication number: 20080178205
    Abstract: A disk drive includes: a cartridge holder that holds a disk cartridge including a disk, and has a holder opening, through which the cartridge is inserted and ejected; two guide walls arranged near the holder opening to define a direction in which the cartridge is inserted; a disk motor for rotating the disk mounted; a head for reading and/or writing information from/on the disk; a base for supporting the head and motor; first and second guide grooves cut through the holder; and first and second guide members movable along the first and second grooves, respectively, and engaging with respective portions of the cartridge.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 24, 2008
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa
  • Publication number: 20080088970
    Abstract: A disk apparatus compatible with a disk cartridge having a large head window even with a small external size. A disk apparatus includes a cartridge holder, a pair of guide walls, a disk motor, a head, a base, first and second slider guides, first and second open/close sliders respectively having first and second engageable portions. The slider guides are provided in the cartridge holder for supporting the disk cartridge, and the sliders are slidably engaged with the slider guides. The sliders slide to allow the engageable portions to be engaged with the disk cartridge such that a distance between the engageable portions is smaller than a distance between the guide walls while the disk cartridge is inserted, and such that the distance between the engageable portions is larger than the distance between the guide walls when the disk cartridge is mounted, and thus form a window in the disk cartridge so as to allow the head to access the disk and allow the disk to be mounted on the disk motor.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 17, 2008
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa
  • Patent number: 7340753
    Abstract: A disk drive is adapted to a disk cartridge having a rotational member and a shutter interlocked with the rotational member. The drive includes a transporting portion for transporting the cartridge and a shutter driving mechanism, which includes a rack portion engaging with a gear portion of the rotational member, and first and second driving levers supported to fit into, and turn with, first and second notched portions of the rotational member, respectively. The transporting portion includes a first cam structure for driving the first and second driving levers of the shutter driving mechanism such that the levers swing as the transporting portion moves. As the transporting portion moves, the first and second notched portions and the gear portion of the disk cartridge held on the transporting portion get engaged with the shutter driving mechanism, which then rotates the rotational member to open or close the shutter.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 4, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Inata, Kozo Ezawa, Yoshito Saji, Teruyuki Takizawa
  • Patent number: 7281254
    Abstract: An optical disc drive includes: a tray to mount a cartridge including a disc and having a positioning hole; a chassis for supporting the tray to move in a first direction; a spindle motor; an optical head; a traverse base, which is supported on the chassis so as to rotate around an axis defined in a second direction near one end of the chassis in the first direction and which mounts the spindle motor and the optical head thereon, the second direction being parallel to the disc and perpendicular to the first direction; a traverse holder coupled to the traverse base; a positioning pin provided for the traverse holder and fitting in with the positioning hole, thereby positioning the cartridge; and an elevating portion for moving a portion of the traverse holder in a third direction perpendicularly to the disc.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: October 9, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeo Santo, Kozo Ezawa, Masahiro Inata, Yoshito Saji
  • Patent number: 7260041
    Abstract: A disk drive includes a plurality of optical heads corresponding to a plurality kind of disks, and a disk distinction device for distinguishing whether a set disk is a first disk or a second disk when a disk is set on a disk tray, a first disk tray conveying mechanism for the first disk and/or the second disk tray conveying mechanism for the second disk conveys the disk tray to a first tray position in which recording and/or reproducing is performed on the first tray or the second tray position in which recording and/or reproducing is performed on the second tray, according to a result distinguished by the disk distinction device, thereby, an optical head corresponding to a disk set to the disk tray is selected correctly and a recording or reproducing operation is performed on the disk.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: August 21, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kozo Ezawa, Takeo Santo, Masahiro Inata, Yoshito Saji, Masuo Maruyama, Teruyuki Takizawa, Yukio Morioka, Tadashi Kuroda, Goro Naoki
  • Patent number: 7188349
    Abstract: An optical disc apparatus according to the present invention is equipped with a disc rotation mechanism for placing and rotating a disc, a plurality of optical heads for emitting light beams for recording and/or reproducing data on the optical disc, a transport unit including a guide structure for guiding the optical heads to be radially transportable on the disc, an optical head transport mechanism for transporting the optical heads along the guide structure, and a transport base for supporting the disc rotation mechanism, the guide structure and the optical head transport mechanism, an optical head storing portion having a plurality of storage support guides for supporting and storing each of the plurality of optical heads, and an optical head insertion and removal mechanism for transporting each of the optical heads from the optical head storing portion to the transport unit or from the transport unit to the optical head storing portion, and each optical head stored in the optical head storing portion is t
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: March 6, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kozo Ezawa, Takeo Santo, Yoshito Saji, Teruyuki Takizawa
  • Publication number: 20070033600
    Abstract: It is an object of the present invention to provide a low-cost disk device with which the same spindle motor and clamper can be used for different types of disk device, such as a DVD drive. A clamper 100 comprises a clamper main body 104 and a plurality of positioning components. The clamper main body 100 clamps a disk 10 between itself and a spindle motor 210, 220, or 230 that holds and rotates the disk 10. The plurality of positioning components are formed on the clamper main body 104 for the relative positioning of the clamper main body 104 and each of the plurality of spindle motors 210, 220, and 230 in the radial direction.
    Type: Application
    Filed: July 21, 2004
    Publication date: February 8, 2007
    Inventors: Yoshito Saji, Kozo Ezawa, Takeo Santo
  • Patent number: 7093271
    Abstract: A disc drive according to the present invention is adapted to a disk cartridge including: a disk; a body to contain the disk; a window provided for the body to allow a data reading and/or writing head to access the disk; a shutter for opening or closing the window; and a rotational member including a gear as a part of its outer periphery and rotating to open or close the shutter. The drive includes a shutter driving mechanism for opening and closing the shutter by rotating the rotational member of the disk cartridge, and the shutter driving mechanism includes a driving gear, which engages with the gear of the rotational member and which turns around a first rotation shaft. The first rotation shaft swings around the center of rotation of the rotational member of the disk cartridge that is held on the holding portion.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: August 15, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kozo Ezawa, Masahiro Inata, Yoshito Saji
  • Publication number: 20060020954
    Abstract: The disk drive of this invention is adapted to a disk cartridge including a window allowing a head to access a disk, a shutter for opening or shutting the window, and a rotational member including a gear portion and first and second notched portions to sandwich the gear portion and interlocking with the shutter. The drive includes a transporting portion for transporting the cartridge, the read/write head, and a shutter driving mechanism, which includes a rack portion engaging with the gear portion, and first and second driving levers supported to fit into, and turn with, the first and second notched portions, respectively. The transporting portion includes a first cam structure for driving the first and second driving levers of the shutter driving mechanism such that the levers swing as the transporting portion moves.
    Type: Application
    Filed: October 30, 2003
    Publication date: January 26, 2006
    Inventors: Masahiro Inata, Kozo Ezawa, Yoshito Saji, Teruyuki Takizawa
  • Patent number: D587274
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 24, 2009
    Assignee: Panasonic Corporation
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa, Hironori Tomita
  • Patent number: D587275
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: February 24, 2009
    Assignee: Panasonic Corporation
    Inventors: Masahiro Inata, Teruyuki Takizawa, Kozo Ezawa, Hironori Tomita