Cross Rail Detail Patents (Class 360/236)
-
Publication number: 20020067575Abstract: A disc head slider includes a slider body having a disc-facing surface and a leading surface adjacent to the disc facing surface. The disc facing surface has leading-most edge and first and second side edges. A bearing surface is formed on the disc facing surface. A debris deflection surface is formed along the leading surface, which is spaced vertically from the leading-most edge with respect to the disc facing surface and has a tangent that forms an angle with the bearing surface of less than ninety degrees.Type: ApplicationFiled: June 15, 2001Publication date: June 6, 2002Inventors: John L. Brand, Kenneth J. Altshuler, Gordon M. Jones, Mohomed-Salah H. Khlif
-
Patent number: 6396664Abstract: A negative pressure air bearing slider including a first air bearing surface formed on the bottom of the slider body at the upstream position so as to extend in the lateral direction of the slider body, and a pair of second air bearing surfaces formed on the bottom of the slider body separately from the first air bearing surface at downstream positions spaced in the lateral direction so as to define an air stream passage therebetween. The second air bearing surfaces serve to generate positive pressures that are spaced apart at downstream positions where a transducer element is embedded in the slider body, so that the slider's stiffness to rolling action can be enhanced. The cooperation of the front and rear rails enables for the creation of a higher negative pressure.Type: GrantFiled: March 16, 2001Date of Patent: May 28, 2002Assignee: Fujitsu LimitedInventors: Ryosuke Koishi, Yoshifumi Mizoshita
-
Publication number: 20020034048Abstract: A magnetic head slider for eliminating the fluctuations of contact forces between a magnetic head and a recording disk due to changes in atmospheric pressure or shocks includes a plurality of fluid force generating faces positioned at a plurality of different height levels. The magnetic head slider includes a positive pressure generation area and a contact pad provided on a top level along the air flow direction due to rotation of the magnetic disk. The contact pad supports the magnetic head. A squeeze pad area is provided at a middle height level between the top level and the low level of the surfaces to traverse the low level of the surfaces for suppressing fluctuations of contact forces between the magnetic head and the magnetic disk medium.Type: ApplicationFiled: September 20, 2001Publication date: March 21, 2002Applicant: Kabushiki Kaisha ToshibaInventor: Naoki Nakano
-
Patent number: 6349018Abstract: A negative pressure air bearing slider including a first air bearing surface formed on the bottom of the slider body at the upstream position so as to extend in the lateral direction of the slider body, and a pair of second air bearing surfaces formed on the bottom of the slider body separately from the first air bearing surface at downstream positions spaced in the lateral direction so as to define an air stream passage therebetween. The second air bearing surfaces serve to generate positive pressures that are spaced apart at downstream positions where a transducer element is embedded in the slider body, so that the slider's stiffness to rolling action can be enhanced. The cooperation of the front and rear rails enables for the creation of a higher negative pressure.Type: GrantFiled: June 17, 1999Date of Patent: February 19, 2002Assignee: Fujitsu LimitedInventors: Ryosuke Koishi, Yoshifumi Mizoshita
-
Publication number: 20020018320Abstract: An air bearing surface for use on a magnetic read/write head. The air bearing surface provides a stable flight profile while exhibiting exception load/unload characteristics through the use of a plurality of pads providing high pressure areas as well as a central cavity providing a sub-ambient pressure to counter the high pressure areas. The channel is set a predetermined distance from the leading edge of the air bearing, the predetermined distance being greater than with prior art designs. A channel extends from the leading edge to the cavity to allow airflow into the cavity. The channel and the set back of the cavity both act in conjunction to facilitate unloading of the air bearing by preventing excessive sub ambient pressures.Type: ApplicationFiled: September 19, 2001Publication date: February 14, 2002Inventors: Pablo G. Levi, Manuel Anaya-Dufresne, Wuxing Gan, Jesse Jianxian Dong
-
Publication number: 20020008938Abstract: A slider having an advanced air bearing can employ control features that permit control of the flow-field streamline direction and thus enable an indirect mass transfer that flushes any accumulated lubricant out of the advanced air bearing. These control features can be located at the air bearing surface or at any recessed height from the air bearing surface. Moreover, these control features can also dislodge and move locations of flow-field stagnation.Type: ApplicationFiled: June 19, 2001Publication date: January 24, 2002Inventors: Bijoyendra Nath, Yu-Li Chang
-
Publication number: 20020008940Abstract: A negative pressure air bearing slider includes a pair of front rails having a predetermined air inlet passage interposed therebetween at the front side of the slider where air enters, a negative pressure rail disposed at the rear of the front rails and forming air outlet passages connected to the air inlet passage, and forming a negative pressure space where negative pressure is generated according to the flow of air at the rear thereof, and a rear rail disposed at the rear of the negative pressure space, where a magnetic head is installed. In the slider, a stepped portion protruding toward the air outlet passages is formed at the negative pressure rail.Type: ApplicationFiled: April 2, 2001Publication date: January 24, 2002Inventors: Dong-seob Jang, Gyu-chan Jun
-
Publication number: 20020001157Abstract: A negative pressure air-bearing slider includes a body flying in a first direction along a track of a disc where information is recorded while being raised to a predetermined height, a plurality of rails provided at the bottom of the body corresponding to a surface of the disc, an air inflow channel arranged at the bottom of the body in the first direction and having an air inflow portion at the leading end portion of the slider and an air exhaust portion at the inside of the body, and a pair of negative pressure recess portions provided at the air exhaust portion of the air inflow channel to be arranged in a second direction perpendicular to the first direction with respect to the air inflow channel. Thus, a constant flying height is maintained in the overall area of a disc. A pitch angle is maintained within an appropriate range in the overall area of a disc. The size of the roll angle is minimized in the overall area of a disc and maintained to be constant.Type: ApplicationFiled: June 6, 2001Publication date: January 3, 2002Inventors: Tae-sik Kang, No-yeol Park, Jae-won Kim
-
Publication number: 20010053046Abstract: A flying head slider includes a slider body. The upstream or leading end of a bottom surface on the slider body is defined along a first datum line extending in the lateral direction of the slider body. The first datum line may be set perpendicular to the longitudinal centerline of the slider body. The upstream or leading end of the front air bearing surface is defined along a second datum line intersecting the first datum line at a predetermined inclined angle. As the incidence angle of an airflow colliding against a step defined at the leading end of the front air bearing surface gets decreased, the pitch angle of the slider body also gets decreased in the flying head slider during flight.Type: ApplicationFiled: December 18, 2000Publication date: December 20, 2001Applicant: FUJITSU LIMITEDInventor: Ryosuke Koishi
-
Patent number: 6317294Abstract: The present invention is directed to a slider, a head, a head device and a read/write apparatus that are extremely effective for achieving high density writing and an increase in the storage capacity. The slider comprises a front flat surface, a first positive pressure generating portion, a second positive pressure generating portion and a first negative pressure generating portion. The front flat surface, which is provided starting at a leading edge, ends at an intermediate point along a lengthwise direction. The first and second positive pressure generating portions have flat surfaces which are essentially of equal heights and are positioned separated from each other over a distance at two sides in a widthwise direction running perpendicular to a lengthwise direction, with edges at one end located toward the leading edge forming step faces rising up from the front flat surface in a step.Type: GrantFiled: August 28, 2000Date of Patent: November 13, 2001Assignee: TDK CorporationInventors: Yoshimitsu Wada, Tetsuya Roppongi, Takeshi Wada, Isamu Sato
-
Patent number: 6288874Abstract: A negative pressure air bearing type head slider is disclosed which is for use in a disk drive and has a head element mounted thereon for reading and writing data from and onto a disk. When loaded, this head slider generates a positive pressure and a negative pressure using inflow and outflow of air due to rotation of the disk, whereby the slider flies above the disk surface with a space therebetween. On the other hand, when the slider is unloaded and retreated from the disk surface, it has a sufficient flying height by virtue of its negative pressure minimizing structure.Type: GrantFiled: June 28, 1999Date of Patent: September 11, 2001Assignee: Kabushiki Kaisha ToshibaInventor: Jun Ito
-
Publication number: 20010010612Abstract: A negative pressure air bearing slider including a first air bearing surface formed on the bottom of the slider body at the upstream position so as to extend in the lateral direction of the slider body, and a pair of second air bearing surfaces formed on the bottom of the slider body separately from the first air bearing surface at downstream positions spaced in the lateral direction so as to define an air stream passage therebetween. The second air bearing surfaces serve to generate positive pressures that are spaced apart at downstream positions where a transducer element is embedded in the slider body, so that the slider's stiffness to rolling action can be enhanced. The cooperation of the front and rear rails enables for the creation of a higher negative pressure.Type: ApplicationFiled: March 16, 2001Publication date: August 2, 2001Applicant: Fujitsu LimitedInventors: Ryosuke Koishi, Yoshifumi Mizoshita
-
Patent number: 6144529Abstract: The present invention is directed to a slider, a head, a head device and a read/write apparatus that are extremely effective for achieving high density writing and an increase in the storage capacity.The slider comprises a front flat surface, a first positive pressure generating portion, a second positive pressure generating portion and a first negative pressure generating portion. The front flat surface, which is provided starting at a leading edge, ends at an intermediate point along a lengthwise direction. The first and second positive pressure generating portions have flat surfaces which are essentially of equal heights and are positioned separated from each other over a distance at two sides in a widthwise direction running perpendicular to a lengthwise direction, with edges at one end located toward the leading edge forming step faces rising up from the front flat surface in a step.Type: GrantFiled: March 24, 1998Date of Patent: November 7, 2000Assignee: TDK CorporationInventors: Yoshimitsu Wada, Tetsuya Roppongi, Takeshi Wada, Isamu Sato
-
Patent number: 6134083Abstract: A self-loading disc head slider includes first and second raised bearing surfaces having outside bearing edges which diverge from one another along a leg portion which extends from a leading portion to a waist portion of the first and second bearing surfaces. A cavity dam defines a sub-ambient pressure cavity between the first and second bearing surfaces. A leading contour extends from a leading slider edge an intersection with first and second bearing surfaces. A notch is positioned within a central region of the leading contour between the first and second bearing surfaces and has first and second side walls which extend from the leading slider edge to the sub-ambient pressure cavity, through the cavity dam. At least one of the side walls is non-divergent from a longitudinal slider center line at the intersection in a direction from the leading slider edge toward a trailing slider edge.Type: GrantFiled: September 22, 1998Date of Patent: October 17, 2000Assignee: Seagate Technology LLCInventor: Scott R. Warmka