专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4942658A Method for manufacturing a magnetic head core with a flux gap having a precisely controlled length 失效
标题翻译：具有精密控制长度的磁通隙的磁头磁芯的制造方法
公开(公告)号：US4942658A
公开(公告)日：1990-07-24
申请号：US277737
申请日：1988-11-30
申请人： Timothy W. Vandnais , Judy M. Ekern , Douglas J. Hennenfent
发明人： Timothy W. Vandnais , Judy M. Ekern , Douglas J. Hennenfent
IPC分类号： G11B5/133 , G11B5/127 , G11B5/187 , G11B5/23
CPC分类号： G11B5/232 , G11B5/1272 , G11B5/1878 , Y10T29/49043 , Y10T29/49055 , Y10T29/49067
摘要： A process for assembling the I core and C core element of a ferrite magnetic transducer core includes the steps of depositing by sputtering a gap material on the gap face of one core element. A magnetic material of the type which can be bonded to ferrite by heat and pressure is then sputter deposited on the gap material. The surface of the magnetic material is then juxtaposed to the gap face of the other element and heat and pressure below a pint which may affect the ferrite's magnetic characteristics is used to diffusion bond the two elements to each other. It is possible to use a layer of Sendust Fe-Si-Al high permeability alloy or other high permeability material as the magnetic material deposited on the gap material if this enhancement of the core is desired. In any case, higher than customary clamping pressure along with lower than customary temperature is used to effect the bond.

2. 发明授权

US4874922A Granule vise for manufacturing a magnetic head core with a glass fillet adjacent the inner edge of the gap 失效
标题翻译：用于制造具有邻近间隙内边缘的玻璃角的磁头芯的颗粒虎钳
公开(公告)号：US4874922A
公开(公告)日：1989-10-17
申请号：US277732
申请日：1988-11-30
申请人： Timothy W. Vadnais , Douglas J. Hennenfent
发明人： Timothy W. Vadnais , Douglas J. Hennenfent
IPC分类号： G11B5/133 , G11B5/23
CPC分类号： G11B5/1335 , G11B5/232 , Y10T29/49057
摘要： Apparatus for compressing against each other for bonding by use of a granule clamp the I and C bars which comprise the O bars from which head cores may be cut, includes a rotating frame so that the angular orientation of the O bars may be changed after embedding them in the granules. This allows bonding glass rods to be placed in the interior openings of the unbonded O bars and then by rotating the frame, cause the glass rods to fall into a position adjacent to the interior edge of the flux gap, and at the same time keep the plane of the flux gaps normal to the axis of the granule clamp's pressure die. When heat is then applied to the unbonded O bars, gravity draws the bonding glass into a fillet adjacent the interior edge of the flux gap.
摘要翻译：用于通过使用颗粒夹紧来彼此压合以进行粘合的装置包括可以切割头芯的O棒的I和C棒包括旋转框架，使得O棒的角取向在嵌入之后可以改变他们在颗粒。这允许将玻璃棒粘合在未粘合的O形棒的内部开口中，然后通过旋转框架，使玻璃棒落入与焊剂间隙的内部边缘相邻的位置，同时保持平面与颗粒夹具的压力模具的轴线垂直的通量间隙。然后当将热量施加到未粘合的O棒时，重力将粘合玻璃吸附到邻近焊剂间隙的内边缘的圆角中。

3. 发明授权

US5580006A Sprocket crusher 失效
标题翻译：链轮破碎机
公开(公告)号：US5580006A
公开(公告)日：1996-12-03
申请号：US368482
申请日：1995-01-04
申请人： Douglas J. Hennenfent , Lloyd M. Thorndyke
发明人： Douglas J. Hennenfent , Lloyd M. Thorndyke
IPC分类号： B02C18/14 , B02C15/16
CPC分类号： B02C19/0068 , B02C18/142 , B02C2018/147
摘要： A crusher adapted to process a feedstock. The crusher includes a pair of crusher rolls for processing a feedstock, the crusher rolls being disposed in a spaced apart relationship with an axis of each crusher roll parallel to one another. Each crusher roll has a plurality of toothed sprockets spaced along the axis of the crusher roll by a spacer disposed between adjacent sprockets. The sprockets of one crusher roll are interleaved with the sprockets of the other crusher roll such that the sprockets of one crusher roll are aligned with the spacers of the other crusher roll. A lateral displacement device is operably coupled to the pair of crusher rolls and is shiftable between a first position wherein the sprockets and spacers of the pair of crusher rolls are interleaved and a second disengaged position wherein the sprockets and spacers of the pair of crusher rolls are disengaged. The lateral displacement device has a biasing member acting to urge the pair of crusher rolls into the interleaved position.
摘要翻译：适于处理原料的破碎机。破碎机包括一对用于处理原料的破碎机辊，该破碎机辊与每个破碎机辊的轴线间隔开设置，彼此平行。每个破碎机辊具有多个齿状链轮，其通过设置在相邻链轮之间的间隔件沿着破碎机辊的轴线间隔开。一个破碎机辊的链轮与另一个破碎机辊的链轮交错，使得一个破碎机辊的链轮与另一个破碎机辊的间隔件对准。横向位移装置可操作地联接到一对破碎机辊，并且可在第一位置和第二脱离位置之间移动，第一位置是一对破碎机辊中的链轮和间隔件与第二脱离位置，其中一对破碎机辊的链轮和间隔件是脱离横向位移装置具有用于将一对破碎机推入交错位置的偏置构件。

4. 发明授权

US4517041A Method for attaching a workpiece to a workpiece carrier 失效
标题翻译：将工件连接到工件载体上的方法
公开(公告)号：US4517041A
公开(公告)日：1985-05-14
申请号：US600266
申请日：1984-06-27
申请人： Douglas J. Hennenfent , Allan L. Holmstrand , Alan G. Kracke
发明人： Douglas J. Hennenfent , Allan L. Holmstrand , Alan G. Kracke
IPC分类号： B23Q1/03 , B23Q1/34 , G11B5/187 , G11B5/31 , B32B31/24
CPC分类号： G11B5/3173 , B23Q1/03 , B23Q1/34 , G11B5/3169 , G11B5/1871 , G11B5/3103 , Y10T156/19
摘要： A workpiece carrier includes a flat support surface to which a workpiece is attached by bonding. The carrier includes means for bending the carrier support surface so that it becomes concave. When dealing with a relatively flexible workpiece, one can cause the workpiece's surface to be machined to attain a convex shape by bending the support surface of the carrier concavely, and then bonding the workpiece attachment surface to the carrier while the carrier support surface is concavely bent. Allowing the carrier's support surface to assume a less concave shape then imparts a convex shape to the surface of the workpiece to be machined.
摘要翻译：工件载体包括通过结合将工件附着到的平坦的支撑表面。载体包括用于弯曲载体支撑表面以使其变成凹形的装置。当处理相对柔性的工件时，可以通过使载体的支撑表面凹陷地弯曲来加工工件的表面以形成凸形，然后将工件附接表面粘合到载体上，同时载体支撑表面被凹入弯曲。允许载体的支撑表面呈现较少的凹形，然后将凸形形状施加到待加工的工件的表面。

5. 发明授权

US4297781A Method of aligning a precision grinding wheel assembly 失效
标题翻译：对准精密砂轮组件的方法
公开(公告)号：US4297781A
公开(公告)日：1981-11-03
申请号：US170383
申请日：1980-07-21
申请人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
发明人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
IPC分类号： B24D5/16 , B23Q3/00
CPC分类号： B24D5/16 , Y10T29/49901 , Y10T29/49964 , Y10T29/53913
摘要： Apparatus for mounting a thin flexible grinding wheel to allow accurate cutting of kerfs therewith. A method of precision assembly of the apparatus is also disclosed.
摘要翻译：用于安装薄的柔性砂轮以允许精确切割切口的装置。还公开了该装置的精密组装方法。

6. 发明授权

US4279102A Method of manufacturing narrow track ferrite head cores 失效
标题翻译：制造窄轨铁氧体磁芯磁芯的方法
公开(公告)号：US4279102A
公开(公告)日：1981-07-21
申请号：US927325
申请日：1978-07-24
申请人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
发明人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
IPC分类号： G11B5/127 , B23P15/00 , G11B5/133 , H01F41/02 , B24B1/00 , G11B5/42
CPC分类号： H01F41/0206 , B23P15/00 , Y10T29/49048
摘要： A magnetic transducing core having a transducing face defined by planes whose surfaces comprise substantially parts of ferrite grains, and a method for producing this core. The method involves proper selection of the grit size and binder of a diamond grinding wheel, machining its sides to precise parallelism with each other, mounting it on a highly accurate air bearing, rotating it at high speed, and feeding a work piece ferrite bar from which the core is cut into the rotating wheel. These techniques prevent axial run-out between the edge of the cutting portion of the wheel and the work piece greater than 2.5 microns. A preferred embodiment includes a high pressure jet of coolant impinging on the wheel just ahead of the cutting interface.
摘要翻译：一种磁转换芯，其具有由表面包括铁素体晶粒的大部分的平面限定的换能面，以及该芯的制造方法。该方法包括适当选择金刚石砂轮的砂粒尺寸和粘合剂，将其侧面加工成精确的平行度，将其安装在高精度的空气轴承上，高速旋转，并将工件铁素体棒该芯被切入旋转轮。这些技术可防止车轮切割部分的边缘与工件之间的轴向偏移超过2.5微米。一个优选的实施例包括在切割界面之前撞击在轮上的高压喷射冷却剂。

7. 发明授权

US4236355A Precision grinding wheel mount 失效
标题翻译：精密砂轮安装
公开(公告)号：US4236355A
公开(公告)日：1980-12-02
申请号：US927321
申请日：1978-07-24
申请人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
发明人： Douglas J. Hennenfent , Robert A. Johnson , Allan L. Holmstrand
IPC分类号： B24B45/00 , B23D61/10 , B24D5/12 , B24D5/16 , B24B41/00
CPC分类号： B23D61/10 , B24D5/16
摘要： Apparatus for mounting a thin flexible grinding wheel to allow accurate cutting of kerfs therewith. A method of precision assembly of the apparatus is also disclosed.
摘要翻译：用于安装薄的柔性砂轮以允许精确切割切口的装置。还公开了该装置的精密组装方法。

8. 发明授权

US3982318B1 失效
公开(公告)号：US3982318B1
公开(公告)日：1992-02-04
申请号：US65357876
申请日：1976-01-29
申请人： DOUGLAS J HENNENFENT , ALLAN L HOLMSTRAND
发明人： DOUGLAS J HENNENFENT , ALLAN L HOLMSTRAND
IPC分类号： G11B5/60 , G11B5/127 , G11B5/133 , G11B5/193 , G11B5/23 , G11B5/42
CPC分类号： G11B5/193 , G11B5/133 , G11B5/23 , Y10T29/49037 , Y10T29/49048 , Y10T29/49057

9. 发明授权

US4536992A Precision lapping system 失效
标题翻译：精密研磨系统
公开(公告)号：US4536992A
公开(公告)日：1985-08-27
申请号：US548598
申请日：1983-11-04
申请人： Douglas J. Hennenfent , Allan L. Holmstrand , Alan G. Kracke
发明人： Douglas J. Hennenfent , Allan L. Holmstrand , Alan G. Kracke
IPC分类号： B24B37/04 , B24B37/10 , B24B7/00
CPC分类号： B24B37/102 , B24B37/048
摘要： Apparatus for precisely machining the surface of a workpiece comprises a rotating plate with a flat, horizontal abrasive-laden surface against which the workpiece surface is forced by gravity. The workpiece is carried on the free end of an arm pivotably supported remote from the end of the arm carrying the workpiece. Loading of the workpiece work surface can be varied by shifting weights along the length of the arm or transverse to the length of the arm. The workpiece itself can comprise a bar on which several magnetic transducing heads have been deposited. Machining the workpiece surface to a preferred position accurately defines a dimension of choice, such as the throat height of these transducers.
摘要翻译：用于精确加工工件表面的装置包括具有平坦的，水平的磨料载置表面的旋转板，工件表面通过重力被迫使该工件表面。工件被承载在远离从承载工件的臂的端部可枢转地支撑的臂的自由端上。可以通过沿着臂的长度移动重量或横向于臂的长度来改变工件工作表面的加载。工件本身可以包括其上已经沉积了几个磁性传感头的杆。将工件表面加工到优选位置精确地定义了选择的尺寸，例如这些换能器的喉部高度。

10. 发明授权

US4182643A Method of forming gaps in magnetic heads 失效
标题翻译：在磁头中形成间隙的方法
公开(公告)号：US4182643A
公开(公告)日：1980-01-08
申请号：US904053
申请日：1978-05-08
申请人： Arthur Calderon, Jr. , Douglas J. Hennenfent , Allan L. Holmstrand
发明人： Arthur Calderon, Jr. , Douglas J. Hennenfent , Allan L. Holmstrand
IPC分类号： G11B5/23 , G11B5/235 , C25D1/00
CPC分类号： G11B5/235 , G11B5/232 , Y10S428/90 , Y10T29/49039 , Y10T29/49057
摘要： A magnetic head is manufactured by depositing a layer of spacer material onto the facing surfaces of the magnetic cores; the thickness of each layer being approximately one-half the length of the intended gap and the thicknesses of both layers together being approximately equal to the thickness (length) of the gap. A layer of bonding glass is deposited onto the surfaces of the spacer layers and the cores are pressed together at an elevated temperature to fuse the glass layers and extrude most of the glass.
摘要翻译：通过在磁芯的相对表面上沉积间隔材料层来制造磁头; 每层的厚度大约是预期间隙长度的一半，两层的厚度一起大致等于间隙的厚度（长度）。将粘合玻璃层沉积在间隔层的表面上，并且芯在升高的温度下被压在一起以熔化玻璃层并挤出大部分玻璃。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式