Patents by Inventor Seung-Chul Park
Seung-Chul Park 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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Patent number: 7299664Abstract: Device for controlling a motor in a washing machine and a method for controlling a process of a washing machine by using the same, the device including a motor, a power source part for supplying a voltage to the motor, a plurality of torque varying parts parallel to each other and electrically connected to the motor for varying a rotation torque of the motor, a plurality of switching part connected to the torque varying parts respectively and electrically connected to the power source part, a driving part for switching the switching parts, and a controlling part for controlling the driving part so as to vary the rotation torque of the motor according to a mode of user's selection.Type: GrantFiled: March 19, 2003Date of Patent: November 27, 2007Assignee: LG Electronics Inc.Inventors: Bo Young Chang, Hee Tae Lim, Byung Keol Choi, Seung Chul Park, Dong Won Kim
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Patent number: 7277250Abstract: An optimal track zero determination method used in a hard disk drive and a hard disk drive using the method. The method has the operations: (a) performing a sequential seek operation on target tracks of a disk, in units of predetermined numbers of tracks, outwardly, from a track separate from a physical track zero position obtained in a servo track write operation, by a predetermined distance toward the physical track zero position; (b) determining whether the target tracks belong to a region where a track-following operation is normally performed, and determining whether an actuator arm connected to a transducer is in contact with a mechanical buffering unit during the sequential seek operation of operation (a); and (c) selecting as a logical track zero, the target track belonging to the region where the track following operation is normally performed and the actuator arm is not in contact with the mechanical buffering unit.Type: GrantFiled: December 23, 2004Date of Patent: October 2, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-chul Park, Kwang-jo Jung
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Patent number: 7251962Abstract: A washing machine with a vibration-absorbing structure for preventing the transfer of the vibration of the driving part is disclosed. The washing machine includes a rotor housing 50 in which a rotor is installed and which is rotatably moved, a driving shaft 20, 31, 33 for rotating a washing tub or a pulsator using a rotational force transferred from the rotor housing, a power transferring member 120 for transferring the rotational force of the rotor housing to the driving shaft, a rotor bushing 110 coupled to the rotor housing and through which the driving shaft penetrates to be slidingly moved, and at least one vibration-absorbing member 140, 150 installed on a path where a power is transferred from the rotor housing to the driving shaft, for absorbing vibration of the rotor housing.Type: GrantFiled: October 10, 2002Date of Patent: August 7, 2007Assignee: LG Electronics Inc.Inventors: Hee Tae Lim, Seung Chul Park, Dong Won Kim, Bo Young Chang
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Patent number: 7204104Abstract: A damper includes: a cylinder: a piston rod inserted to be movable linearly in the cylinder; a guide member provided with a coupling hole to which an insertion portion of the rod member is coupled at a center thereof, and provided with first and second grooves at an outer circumferential surface thereof; a fixed damping member fitted into the first groove and adhered to an inner surface of the cylinder; and a movable damping member up and down movably fitted into the second groove and selectively adhered to the inner surface of the cylinder.Type: GrantFiled: January 12, 2004Date of Patent: April 17, 2007Assignee: LG Electronics Inc.Inventors: Young-Ho Kim, Joon-Woo Kim, Dong-Won Kim, Seung-Chul Park, Si -Moon Jeon, Gwan-Ryong Park
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Patent number: 7203029Abstract: A method and apparatus for controlling a track seek servo of a disk drive. The method of controlling the track seek servo of the disk drive having a transducer and a disk with a plurality of tracks, includes moving a transducer to a space over a target track of the plurality of tracks according to a track seek controlling process in which an asymmetrical sine wave acceleration trajectory a(t) is used in a track seek mode.Type: GrantFiled: January 30, 2004Date of Patent: April 10, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-chul Park, Chang-ik Kang
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Publication number: 20070044519Abstract: A washing machine having a damper-supporter, comprises: an outer case having a receiving space therein; a tub installed in the outer case; a damper having one end connected to the tub so as to perform a relative motion; and a damper-supporter spaced from the outer case so as to be vibration-isolated therefrom, for supporting another end of the damper. Accordingly, vibration and noise can be reduced by preventing vibration of the tub from being transmitted to the outer case through the damper.Type: ApplicationFiled: August 22, 2006Publication date: March 1, 2007Inventors: Sung-Ryong Kim, Sung-Min Kim, Kyung-Seop Hong, Gwan-Ryong Park, Seung-Chul Park
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Patent number: 7099106Abstract: A head of a disc drive is decelerated after being accelerated, according to a desired deceleration profile for minimizing damage to the head. The desired deceleration profile is determined from an acceleration profile used for accelerating the head before decelerating the head. With such a desired deceleration profile the head is parked with substantially zero speed by an end of the desired deceleration profile to minimize damage to the head.Type: GrantFiled: September 22, 2004Date of Patent: August 29, 2006Assignee: Samsung Electronics Co., Ltd.Inventor: Seung-Chul Park
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Patent number: 7086254Abstract: Disclosed is a direct-drive washing machine enabling to revolve a pulsator only or both of the pulsator and inner tub in accordance with a load condition such as a laundry quantity, a washing water quantity, etc, a fabric condition, and the like so as to realize an optimal washing condition as well as improve a washing efficiency. The present invention includes a first rotating shaft connected directly between the drive motor and pulsator so as to transfer a drive power of the drive motor to the pulsator directly, a second rotating shaft installed between the drive motor and inner tub separately so as to transfer the drive power of the drive motor to the inner tub selectively, a clutch installed between the second rotating shaft and drive motor so as to connect or cut off the drive power transferred from the drive motor to the inner tub, and a clutch operating device actuating the clutch.Type: GrantFiled: June 17, 2002Date of Patent: August 8, 2006Assignee: LG Electronics Inc.Inventors: Hee-Tae Lim, Dong-Won Kim, Seung-Chul Park, Bo-Yung Chang
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Publication number: 20060010935Abstract: A damper includes a cylinder; a piston rod disposed to be movable linearly in the cylinder; a friction unit disposed to be movable in a radial direction inside the cylinder and generating a damping force by rubbing on an inner circumferential surface of the cylinder; and a damping force control unit mounted at the piston rod and controlling a damping force by moving the friction unit in the radial direction. A desired damping force is generated at a desired point such that a strong damping force can be generated at an interval where excessive vibration is generated and zero or a weak damping force can be generated at a normal interval, to thereby reduce vibration and noise of a washing machine.Type: ApplicationFiled: July 12, 2005Publication date: January 19, 2006Applicant: LG Electronics Inc.Inventors: Gwan-Ryong Park, Seung-Chul Park, Jae-Hyun Kim, Si-Moon Jeon
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Patent number: 6918271Abstract: An inner tub for a washing machine, which is able to increase a dried degree of laundries and to increase a reliability of the washing machine by improving a structure of an inner tub hub and reinforcing the inner tub to make a spin-drying of high speed possible, comprises an inner tub body; an inner tub base formed on a lower part of the inner tub body; and an inner tub hub coupled on a lower surface of the inner tub base, including a rotating shaft coupling portion to which a rotating shaft for transmitting a rotating force of a driving motor is coupled, a radial supporting portion extended in an outer boundary direction of the rotating shaft coupling portion with a predetermined gap therebetween, and a ring type supporting portion having a predetermined width in an outer circumferential direction of the radial supporting portion formed integrally.Type: GrantFiled: July 30, 2002Date of Patent: July 19, 2005Assignee: LG Electronics Inc.Inventors: Hee-Tae Lim, Jae-Won Chang, Seung-Chul Park, Gwan-Ryong Park
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Publication number: 20050152253Abstract: An optimal track zero determination method used in a hard disk drive and a hard disk drive using the method. The method has the operations: (a) performing a sequential seek operation on target tracks of a disk, in units of predetermined numbers of tracks, outwardly, from a track separate from a physical track zero position obtained in a servo track write operation, by a predetermined distance toward the physical track zero position; (b) determining whether the target tracks belong to a region where a track-following operation is normally performed, and determining whether an actuator arm connected to a transducer is in contact with a mechanical buffering unit during the sequential seek operation of operation (a); and (c) selecting as a logical track zero, the target track belonging to the region where the track following operation is normally performed and the actuator arm is not in contact with the mechanical buffering unit.Type: ApplicationFiled: December 23, 2004Publication date: July 14, 2005Applicant: Samsung Electronics, Co., Ltd.Inventors: Seung-chul Park, Kwang-jo Jung
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Publication number: 20050073772Abstract: A head of a disc drive is decelerated after being accelerated, according to a desired deceleration profile for minimizing damage to the head. The desired deceleration profile is determined from an acceleration profile used for accelerating the head before decelerating the head. With such a desired deceleration profile the head is parked with substantially zero speed by an end of the desired deceleration profile to minimize damage to the head.Type: ApplicationFiled: September 22, 2004Publication date: April 7, 2005Inventor: Seung-Chul Park
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Publication number: 20050052781Abstract: A method and apparatus for controlling a track seek servo of a disk drive. The method of controlling the track seek servo of the disk drive having a transducer and a disk with a plurality of tracks, includes moving a transducer to a space over a target track of the plurality of tracks according to a track seek controlling process in which an asymmetrical sine wave acceleration trajectory a(t) is used in a track seek mode.Type: ApplicationFiled: January 30, 2004Publication date: March 10, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Seung-Chul Park, Chang-ik Kang
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Publication number: 20040261469Abstract: Disclosed herein is a damper for washing machines. The damper comprises a cylinder and a piston interactively coupled to each other in a state wherein the cylinder is connected to a tub and the piston is connected to a base, a first friction member provided around the piston for generating a frictional force when the piston moves inside the cylinder, a slider coupled to the piston inside the cylinder so as to move together with the piston if the piston moves beyond a predetermined displacement range, and a second friction member provided around the slider for generating a frictional force when the slider moves inside the cylinder. The damper configured as stated above generates different damping forces according to the vibration degrees of the tub, thereby effectively attenuating the vibration of the tub.Type: ApplicationFiled: May 12, 2004Publication date: December 30, 2004Inventors: Seung Chul Park, Si Moon Jeon, Gwan Ryong Park, Jae Hyun Kim
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Publication number: 20040244436Abstract: Disclosed is a damper mounting structure for a washing machine. The damper mounting structure includes a damper positioned between a tub and a cabinet for supporting the tub, a mounting bracket connected to the damper, and a buffering member provided between the mounting bracket and the cabinet for absorbing oscillation, thus minimizing the transmission of oscillation of the tub during the operation of the washing machine and allowing the washing machine to be operated in a quiet state.Type: ApplicationFiled: March 25, 2004Publication date: December 9, 2004Inventors: Gwan Ryong Park, Seung Chul Park
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Publication number: 20040226321Abstract: A variable damping type damper and a washing machine having the same comprise: a cylinder of which one side is provided with a receiving space having a certain depth and another side thereof is coupled to the cabinet or the tub; a rod of which one side is relative-movably inserted into the receiving space of the cylinder and another side thereof is coupled to the cabinet or the tub; a guide bar provided at an end portion of the rod; a variable volume frictional means expanded and contracted in itself by a difference of flow amount introduced/exhausted into/from an inner space by being coupled to the guide bar, and adhered/detached to/from an inner circumferential surface of the receiving space of the cylinder; a volume type slider performing a relative movement with the variable volume frictional means by being slidably inserted into the guide bar, for causing fluid flow inside the variable volume frictional means; and a frictional member fixedly coupled to the volume type slider for generating a frictional fType: ApplicationFiled: January 9, 2004Publication date: November 18, 2004Inventors: Gwan-Ryong Park, Jae-Hyun Kim, Seung-Chul Park
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Publication number: 20040148976Abstract: A damper includes: a cylinder: a piston rod inserted to be movable linearly in the cylinder; a guide member provided with a coupling hole to which an insertion portion of the rod member is coupled at a center thereof, and provided with first and second grooves at an outer circumferential surface thereof; a fixed damping member fitted into the first groove and adhered to an inner surface of the cylinder; and a movable damping member up and down movably fitted into the second groove and selectively adhered to the inner surface of the cylinder.Type: ApplicationFiled: January 12, 2004Publication date: August 5, 2004Inventors: Young-Ho Kim, Joon-Woo Kim, Dong-Won Kim, Seung-Chul Park, Si-Moon Jeon, Gwan-Ryong Park
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Publication number: 20040144137Abstract: A damper includes: a cylinder; a piston rod disposed to be movable linearly in the cylinder; and a plurality of damping members installed between the cylinder and the piston rod, and generating a damping force by multi-stage so that when a vibration transmitted from the cylinder to the piston rod or from the piston rod to the cylinder is big, a strong damping force is generated, whereas when a vibration is small, a weak damping force is generated. A damping force is generated by stages depending on a displacement of a vibration transferred from the cylinder to the piston or from the piston to the cylinder. If a small amount of vibration is transferred, a weak damping force is generated, whereas if a large amount of vibration is transferred, a strong damping force is generated. Accordingly, a vibration damping performance can be improved.Type: ApplicationFiled: January 14, 2004Publication date: July 29, 2004Inventors: Gwan-Ryong Park, Young-Ho Kim, Joon-Woo Kim, Dong-Won Kim, Seung-Chul Park
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Publication number: 20040105185Abstract: A method and an apparatus to write and inspect servo information on a disc drive and minimize an effect on servo information written in adjacent tracks caused by a gap erase field, and write servo information on the disc drive and perform servo information inspection and defect processing. The method includes sequentially writing servo information toward a track having skew ‘0’ at from outer surface in an outer region of the disc, and sequentially writing the servo information toward the track having skew ‘0’ from an inner surface in an inner region, and after writing of the servo information is completed, inspecting the servo information written in a track at a predetermined distance from the track having skew ‘0’, and determining whether the servo information is correctly written.Type: ApplicationFiled: August 21, 2003Publication date: June 3, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Seung-Chul Park, Kwong-jo Jung
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Publication number: 20030221265Abstract: Device for controlling a motor in a washing machine and a method for controlling a process of a washing machine by using the same, the device including a motor, a power source part for supplying a voltage to the motor, a plurality of torque varying parts parallel to each other and electrically connected to the motor for varying a rotation torque of the motor, a plurality of switching part connected to the torque varying parts respectively and electrically connected to the power source part, a driving part for switching the switching parts, and a controlling part for controlling the driving part so as to vary the rotation torque of the motor according to a mode of user's selection.Type: ApplicationFiled: March 19, 2003Publication date: December 4, 2003Applicant: LG Electronics Inc.Inventors: Bo Young Chang, Hee Tae Lim, Byung Keol Choi, Seung Chul Park, Dong Won Kim