Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7195430 | Horizontal boring machine tool A horizontal boring machine tool is described that includes a boring bar equipped with a cutting bit and a counter-bar coupled in head-to-head rotation with the boring bar. This counter-bar is also equipped with a cutting bit, or a series of cutting bits destined to... | 03/27/2007 |
| 6735863 | Method of engine cylinder bore enlargement A method is provided for forming enlarged cylinder bores in an engine based on a family of internal combustion engines having an original cylinder bore axis for each bore, wherein each cylinder bore is constrained against enlargement toward one side. The method incl... | 05/18/2004 |
| 6722826 | Internal cavity cutting tool with stable support An internal cavity cutting tool assembly includes a tool body, a tool hanger, and a bearing assembly. The tool hanger body has a through-bore that is adapted to receive the bearing assembly. The tool body has first and second body portions, each having an arbor bore... | 04/20/2004 |
| 6554549 | Tool with a base body and method for forming bores in a work piece using such a tool A tool having a base body which carries cutters for machining bores in a workpiece, the cutters being arranged coaxially with one another. The base body further has at least one lifting element, with which the base body can be moved from an eccentric posi... | 04/29/2003 |
| 6536997 | Process for chip-removing machining of bore surfaces A process is proposed for chip-removing machining of bore surfaces spaced at a distance from one another in axial direction, particularly of crankshaft and/or camshaft bearing bores, in which at least one of the two outermost bore surfaces is machined to ... | 03/25/2003 |
| 6447220 | Portable boring/facing machine A portable boring/facing machine having a rotatable boring bar on which is supported a cutting head assembly that is adapted to be axially translated by a lead screw drive powered by an AC variable speed servo motor is provided with mounting brackets atta... | 09/10/2002 |
| 6287057 | Device for machining bores in a workpiece and a method for machining bores by employing such device A device for machining bores in a workpiece has a tool with a base member and cutting blades mounted on the base member for machining coaxial bores in the workpiece. At least one guide bearing for supporting the tool is provided. The at least one guide be... | 09/11/2001 |
| 6149561 | Machine and method for flexible line boring A line boring apparatus comprising a motorized spindle and tool support mounted on a support frame for motion along two axes perpendicular to a rotational spindle axis. The spindle is also supported for motion along the spindle axis relative to the tool s... | 11/21/2000 |
| 6012880 | Device for finish machining of bearing bores at crankcases A precise finish machining of bearing bores (25) at crankcases (26) is made feasible by way of a device with tow skid-guided spindle boxes (1, 2), the drivable spindles of which are in flush alignment. One spindle is designed as a working spindle (3) carr... | 01/11/2000 |
| 5865573 | Boring bar cutting and grinding devices A boring bar for machining of borehole surfaces which are arranged axially spaced from each other, in particular crank-shaft and/or cam-shaft bearing holes. The bar has at least one, and preferably a plurality, of cutting devices and at least one, and pre... | 02/02/1999 |
| 5836725 | Apparatus and method for boring overhead cam engine cylinder heads A method and machine for repairing overhead cam engine cylinder heads and the like. The method includes the steps of removing the caps from the bases of the bearing towers or housings, removing material from the legs of the caps to reduce their height, re... | 11/17/1998 |
| 5628591 | Axle pivot boring tool An axle pivot boring tool is disclosed. Such tool comprises a plate having an enlarged circular aperture in a central extent thereof. A plurality of small apertures are symmetrically located therearound. A plurality of peripheral holes for mounting the pl... | 05/13/1997 |
| 5580195 | Machining kit and method of using the same A kit for reaming the governor bores of used motor vehicle transmissions includes several cutting tools having cutting heads of different diameter. The diameters of the cutting heads are matched to the differing diameters of the governor bores of differen... | 12/03/1996 |
| 5540526 | Fluid bearing tool and a method for forming the same An improved tool and method for the machining (e.g., boring, cutting, grinding and the like) of a workpiece. The tool includes a body that can be connected in a cantilevered arrangement to a machine for rotating machining operations and has fluid distribu... | 07/30/1996 |
| 5417525 | Deburring attachment for a honing tool Burrs formed at the ends of a bore during a honing operation performed by a single pass honing tool are removed by a deburring attachment which is carried on the leading end of the tool. The attachment includes one set of spring-loaded blades which remove... | 05/23/1995 |
| 5356244 | Head frame boring method and apparatus The method, apparatus and system utilize the saddle on which the stationary head of an automatic screw machine is normally mounted, for supporting a cylindrical boring bar. Rotation and advancement of the bar on the saddle surface enables reboring of the ... | 10/18/1994 |
| 5209615 | Boring bar support means An improved support mechanism for supporting a boring bar at spaced locations along its length within a workpiece during a boring operation, the present support mechanism being particularly adaptable for precision in-line boring of the cam shaft bores ass... | 05/11/1993 |
| 5159862 | Method and apparatus for machining the inside surface of a closed hollow casing A method and apparatus for machining the inside surface of the two halves of the hollow casing of a machine or the like with the two halves positioned and mated together to form the closed hollow casing thereby providing machined areas on the inside surfa... | 11/03/1992 |
| 4990037 | Portable boring machine A boring machine includes a power unit having a housing, a drive member for engaging a boring bar, and a motor for driving the drive member to rotate relative to the housing. The boring machine also includes a bearing assembly comprising an inner bearing ... | 02/05/1991 |
| 4979850 | Apparatus for precision line boring of engines and like mechanisms A sleeve is axially aligned with the bore which is to be cut by a cutting bar rotated in the sleeve. The sleeve is placed and held in proper position by radially projecting brackets having holes in them. These holes are aligned with holes in a member havi... | 12/25/1990 |
| 4899458 | Process and device for centering a guide mandrel A process and apparatus for centering a pilot shaft which is inserted into a valve guide of a valve seat to be machined, and serves therein as a guide mandrel for a rotary shaping tool. By electronically controlled drive mechanisms, the pilot shaft is sup... | 02/13/1990 |
| 4850756 | Portable align boring machine A self-centering and aligning attachment assembly for attaching a portable align boring machine to a workpiece or associated support for machining a bore in the workpiece includes first and second attachment sub-assemblies. The a first attachment sub-asse... | 07/25/1989 |
| 4842450 | Method and apparatus for self-adjusting boring bar Method and apparatus for conducting boring of a series of spaced walls on a workpiece using a self-adjusting boring bar. The method comprises: (a) supporting a spindle in a rotationally fixed tubular housing to provide an assembly having an unsupported ex... | 06/27/1989 |
| 4789279 | System and apparatus for reboring main bearings An engine block reboring system for main bearings in which the block is mounted on a pair of rails extending laterally on a workbed and is rebored by a tool driven by a right-angle drive extension on a vertical boring machine after the position of the blo... | 12/06/1988 |
| 4730958 | Overhead cambearing line boring tool A portable cambearing line boring tool for an internal combustion engine with an aluminum head or a cast iron block with aluminum caps and an overhead camshaft with non-replaceable bearings that are cast in as an integral part of the cylinder head which u... | 03/15/1988 |
| 4701081 | Boring process and apparatus A boring apparatus and process comprising suspending a boring bar for boring a hole in a workpiece for universal pivotal movement in all directions. Then, the workpiece is brought below the boring bar with the axis of the hole being vertical. Thereafter, ... | 10/20/1987 |
| 4693642 | Line boring apparatus A line boring machine adapted for high speed line boring of engine blocks or the like featuring a series of spaced crankcase bulkheads, employes a motorized spindle capable of advancing, and boring bar from one end of the block therethrough to the other e... | 09/15/1987 |
| 4666350 | Boring bar An improved boring bar for machining bearings in an engine block or the like includes a plurality of circumferentially spaced wear pads which extend radially beyond the surface of the bar and form the sole points of support between the bar and the inner r... | 05/19/1987 |
| 4657446 | Boring machine for cam shaft bearings A boring machine used for a line boring bearing housings of an automotive engine block which provides for very secure mounting and precise operation by having rigidity built into the mounting table but yet is low cost, easy to fabricate, and readily adapt... | 04/14/1987 |
| 4652186 | Portable boring machine A portable boring machine for boring bearing housings in situ includes a pair of spaced apart mounting members for adjustably positioning a boring bar within a row of bearing housings. The spaced apart mounting members are removably positionable on the bo... | 03/24/1987 |
| 4580931 | In-situ machine for refurbishing a bore in a workpiece An in situ machine is provided for refurbishing a bore in a workpiece. The achine includes a shaft which is adapted to be fixed to the workpiece in axial alignment therewith. A tubular boring element is concentrically mounted for rotation about the fixed s... | 04/08/1986 |
| 4573837 | Longitudinal feed attachment for a boring bar A feed attachment for controlling the axial movement of a rotatable boring bar relative to a workpiece. The feed attachment includes a split clamp selectively secured to the boring bar for rotation with the boring bar about its axis. A collar is rotatably... | 03/04/1986 |
| 4571129 | Mandrel assembly An apparatus and method is provided for an air bearing support of a rotatable tooling bar, such as a boring bar. One or two mandrels may be provided for this tooling bar to form a complete mandrel assembly with the tooling bar. An air pressure expansible ... | 02/18/1986 |
| 4451186 | Tool for use in line boring of diesel engine blocks A tool for use in the line boring of diesel engine cylinder blocks. The tool includes a mounting pad having a pair of holes for fitting over dowel pins projecting from the end of the cylinder block. A central opening of the pad is then centered in alignme... | 05/29/1984 |
| 4213721 | Align boring machine An align boring machine for boring bearing housings of an automotive engine block wherein a boring bar is rotatably suspended by and rotatably driven between two columns positioned upon machine ways, and the engine block is mounted for aligned movement al... | 07/22/1980 |
| 4132494 | Align boring machine An align boring machine for boring bearing housings of an automotive engine block wherein a boring bar is rotably suspended by and rotably driven between two columns positioned upon machine ways, and the engine block is mounted for aligned movement along ... | 01/02/1979 |
