| Patent Number |
Title Of Patent |
Date Issued |
| RE32595 |
Process for making a laminated bearing utilizing plastics alloy compositions |
February 9, 1988 |
| A plastics alloy for a bearing material comprising polyphenylene sulphide and polyether ether ketone. The alloy is formed by powder mixing, melt blending or solvent blending and applied to a metal backing either as a sheet, or in solution or in powder form. The alloy is heated and roll |
| D287599 |
Piston |
January 6, 1987 |
|
| D286781 |
Piston |
November 18, 1986 |
|
| D286780 |
Piston |
November 18, 1986 |
|
| 5743012 |
Piston and piston ring |
April 28, 1998 |
| A method of reducing wear between the radial faces of a piston ring and the radial faces of the co-operating piston ring groove in an aluminium alloy piston is described. The method comprises the steps of locally alloying the region in which the piston ring groove radial faces are locate |
| 5335711 |
Process and apparatus for metal casting |
August 9, 1994 |
| Cast components having reduced porosity levels are produced by pouring a molten metal into a mould which is in a first chamber, and withdrawing the filled mould into a second chamber. The second chamber is then isolated from the first chamber with regard to pressure, and the second chamb |
| 5096581 |
Centrifugal oil filter |
March 17, 1992 |
| Centrifugal oil filters are described comprising a rotatable centrifugal cleaning cartridge, a shaft for rotation thereon, a co-operating member for connecting the filter assembly to a source of fluid to be cleaned, an outer casing member, a closure member for sealing one end of the casi |
| 5009124 |
Wrist pin |
April 23, 1991 |
| Wrist pins for use in pistons are described. The wrist pin comprises an elongate, substantially hollow member having two spaced-apart convex surface portions of substantially cylindrical or oval curvature, the two convex portions being connected by two walls of different curvature. B |
| 5001965 |
Piston and piston ring |
March 26, 1991 |
| Pistons and associated piston rings are described for use in internal combustion engines. The piston and piston ring comprise an annular piston ring groove having two radially extending walls and an axially extending wall; a compression ring received in the piston ring groove for sealing |
| 4939984 |
Investment-cast piston crown cap with encapsulated non-metallic insulating core |
July 10, 1990 |
| Pistons for internal combustion engines, particularly compression ignition engines. The pistons have insulating crowns and include a crown having a cap thereon, extending over the crown surface area, the crown cap being composed of an iron-based or a nickel-based alloy and having on the |
| 4936173 |
Machine tools |
June 26, 1990 |
| A machine tool includes an elongate tool holder which is mounted by a pair of spring strips for pivotal movement on a mounting. One end of the tool holder carries the tool while the other end of the tool holder is moved by an actuator via a rod. Tool positioning signals are fed to the ac |
| 4928578 |
Pistons with bearing members |
May 29, 1990 |
| Pistons are described comprising a crown portion and a skirt portion, the crown portion having depending from the underside thereof a boss, the boss having secured thereto at least two bearing members in fixed relationship to the piston body and which bearing members co-operate with an a |
| 4921734 |
Cylinder liners |
May 1, 1990 |
| Cylinder liners for internal combustion engines, particularly diesel engines, are described the liners comprising a metal outer sleeve having therein an inner sleeve comprising a ceramic material which is held by compressive hoop stresses under all normal engine operating conditions, |
| 4876947 |
Pistons with bearing lands |
October 31, 1989 |
| Pistons are discribed comprising a crown portion which also includes a piston ring belt and gudgeon-pin bosses and which crown portion comprises a ferrous allow and a seperate articulated skirt portion comprising a casting of aluminum alloy, steel or cast iron which also includes gud |
| 4871458 |
Centrifugal filters |
October 3, 1989 |
| A centrifugal filter is described with a disassemblable cleaning rotor having a fluid flow directing member comprising an annular member which is removably located by its outer periphery by a sealing member and a base member. |
| 4865922 |
Plain bearing |
September 12, 1989 |
| A cavitation erosion resistant plain bearing comprising a steel backing, a sintered bronze interlayer and a lining of PTFE filled with 1 to 50% by volume of an ionic fluoride of low aqueous solubility. |
| 4864985 |
Rotary valve |
September 12, 1989 |
| A rotary valve is described together with engines embodying such valves. A rotary valve for an internal combustion engine or compressor comprises a generally cylindrical valve body member of a ceramic material, the valve body having at least one gas duct passing through the valve body wa |
| 4841927 |
Ceramic cylinders |
June 27, 1989 |
| Ceramic cylinder assemblies for internal combustion engines, particularly diesels, are described. The assemblies comprise at least two portions including at least one main cylinder portion and at least one combustion region portion, the at least two portions being contained within a meta |
| 4838149 |
Pistons |
June 13, 1989 |
| Pistons for internal combusion engines are described. The pistons comprise a crown component and a skirt component wherein the crown component consists of an iron or nickel based alloy annular portion having fitted directly therein a ceramic insert, the crown component being joined to th |
| 4831919 |
Asymmetric oval piston with higher convexity thrust face |
May 23, 1989 |
| Pistons are described having oval polar profiles or both oval polar profiles and axial profiles machined to asymmetric curvatures about the plane which includes both the piston axis and the minor axis over at least a part of the skirt length, the asymmetry of the polar profile comprising |
| 4830719 |
Method for etching piston rings |
May 16, 1989 |
| A method for the etching of chromium-coated piston rings comprises the steps of producing relative movement and rubbing contact between the chromium-coated surface of a piston ring which is anodic and a cathode having a porous material on the rubbing surface thereof, supplying an ele |
| 4817505 |
Piston with stiffening structure for lower skirt regions |
April 4, 1989 |
| Pistons are described having improved stiffness of the lower skirt regions to improve piston guidance and oil film distribution. The pistons comprise a crown portion including piston ring grooves and a skirt portion, the skirt portion being divided into an upper skirt region and a lower |
| 4817007 |
Machine tool control systems |
March 28, 1989 |
| A machine tool has a workpiece which is rotated by a motor. The tool is moved by a tool drive to machine a required surface profile on the workpiece and is also indexed on a carriage. The stepping signals for the workpiece motor are produced by a control system and, for each workpiece |
| 4811253 |
Method and apparatus for the measurement of airfoils |
March 7, 1989 |
| A method and apparatus are described for the automatic gauging of engineering components. The apparatus includes a clamp for holding a component to be gauged, probes for scanning a surface of the component, drives to provide relative motion between the component and the probes in thr |
| 4809591 |
Pistons with oil retaining depressions |
March 7, 1989 |
| A piston generates reduced noise in operation by the provision on its lateral bearing surfaces of two or more depressions in which oil is stored to provide a cushion against lateral movement of the piston at points of a reciprocation of the cycle where noise is generated. The depressions |
| 4804033 |
Production of engineering components |
February 14, 1989 |
| A process is described for the production of engineering components wherein the process comprises filling a die cavity within a die assembly with molten metal by utilizing centrifugal force, the die cavity being rotated about an axis remote from the actual component cavity at a rotationa |
| 4795682 |
Tin-cobalt bearing overlay alloys |
January 3, 1989 |
| Alloys of the type known as overlays for bearings are described. An overlay for a bearing comprises between 0.5 and 15 wt % of cobalt the balance being tin apart from incidental impurities. |
| 4787975 |
Disposable cartridges for centrifugal separators |
November 29, 1988 |
| Disposable cartridges are described which are formed from thin sheet metal pressings and wherein the base member has integrally-formed nozzles to produce less turbulent flow in the oil jets issuing from the nozzles than in known cartridges. Less turbulent oil flow allows greater oil flow |
| 4770547 |
Bearings |
September 13, 1988 |
| Thrust bearings are described comprising a substantially planar thrust accepting member having at least one locating portion substantially at a right angle thereto and which is adapted to co-operate with a recess formed in the bearing housing. In a preferred embodiment there are two |
| 4769118 |
Process for the curvilinear formation of holes |
September 6, 1988 |
| A process is described for the production of holes having curvilinear paths in engineering components. The process comprises the steps of producing relative motion along a curvilinear path between a workpiece in which it is desired to form a curved hole and a drill bit wherein the drill |
| 4760771 |
Pistons with oil retaining cavities |
August 2, 1988 |
| A piston has skirt portions (13) which are provided with parallel rows (14) of cavities (15) whose maximum depth below the surface of the skirt portion is 0.010 mm. Parts (20,23) of the skirt portion are left between the cavities for providing a reduced area, in comparison with the full |
| 4759266 |
Multiple part oil-control ring for piston |
July 26, 1988 |
| An oil control ring for a piston in an i.c. engine comprising an expander ring and two lamellar rails which scrape the oil from the cylinder wall. The expander ring has two series of lugs arranged alternately on each side, which support the rails and two series of dimples arranged al |
| 4755952 |
Measurement and machining of engineering components |
July 5, 1988 |
| A method and apparatus are described for the automatic gauging of engineering components. The apparatus includes a clamp for holding a component to be gauged, probes for scanning a surface of the component, drives to provide relative motion between the component and the probes in thr |
| 4752995 |
Manufacture of pistons |
June 28, 1988 |
| A method is disclosed of manufacturing a piston having a skirt on which are formed a plurality of bearing surfaces, each bearing surface being at a predetermined axial position on the skirt, being spaced outwardly of the skirt to a required radial dimension and extending around the skirt |
| 4737913 |
Automatic speed control systems |
April 12, 1988 |
| A vehicle speed control system comprises a memory which stores a signal Vr representing desired road speed which is compared in a comparator with a signal Vs representing actual speed. An actuator responds to any error by adjusting the engine to bring the vehicle to the correct speed. Un |
| 4730547 |
Pistons and piston castings |
March 15, 1988 |
| A piston casting for forming a piston for an internal combustion engine or compressor comprises a generally cylindrical crown (10) having a ring belt (11) extending around the crown for the formation therein of one or more piston ring grooves. A gudgeon pin bore (14) extends through the |
| 4727795 |
Pistons |
March 1, 1988 |
| The height of a piston for an internal combustion engine is reduced by the provision of gudgeon pin bores which intersect or at least partly intersect a ring band extending around the crown. This allows the mass of the piston to be reduced and allows improved visibility from the vehicle |
| 4715491 |
High inertia load drives and controls therefor |
December 29, 1987 |
| A drive system is described for driving high-inertia loads such as, for example, conveyor belts for carrying minerals in mines, quarries, etc. The drive system for a high inertia load comprises a prime mover, a brake for holding the load stationary, reaction sensing means for indicating |
| 4715422 |
Reinforcement of articles of cast metal or metal alloy |
December 29, 1987 |
| Milled silica or alumina fibres or whiskers are formed into a reinforcement for a squeeze cast article such as a piston for an internal combustion engine. The problem of handling the milled fibres or whiskers while they are formed into the reinforcement is mitigated or overcome by the us |
| 4715267 |
Bearing surface for internal combustion engine piston skirt |
December 29, 1987 |
| A piston for an internal combustion engine is provided with two separate skirt portions on either side of the gudgeon pin bore. Each skirt portion is the shape of a sector of a cylinder and is cantilevered on a pair of struts connected to the skirt members at points intermediate their to |
| 4712443 |
Mechanical over-ride linkages |
December 15, 1987 |
| An override mechanism is disclosed for connection between the accelerator pedal of a vehicle and the fuel supply for normally enabling the driver to adjust the fuel supply but which can be overriden by speed limiting means. The throttle pedal is connected to move a lever to increase the |
| 4708104 |
Reinforced pistons |
November 24, 1987 |
| A piston is manufactured by incorporating a reinforcement which is formed at least in part by a fibre material and which is so non-uniform as to provide differing characteristics in the cast piston in predetermined differing regions of the piston. For example, the volumetric density of |
| 4707194 |
Process for the production of bearing materials |
November 17, 1987 |
| Bearing materials and a process for the manufacture thereof are described. The bearing alloys are aluminium-based and comprise the following compositions expressed in weight percent; 8 to 35 tin, 1 to 3 copper, 2 to 10 silicon and remainder aluminium apart from incidental impurities. The |
| 4702151 |
Pistons |
October 27, 1987 |
| A piston comprises a crown (10) and a ring band (11) carried on two gudgeon pin bosses (12a, 12b) by two supports (20). There are upper and lower pairs of struts (21a, 21b, 21c, 21d) on each side of the gudgeon pin bosses, one strut of each pair projecting from one gudgeon pin boss and |
| 4696867 |
Aluminum based bearing alloys |
September 29, 1987 |
| An alloy for use as a bearing lining on a metal backing comprising, by weight, 1 to 11% silicon, 8 to 35% tin, and 0.2 to 3% copper, the balance being aluminum. The lining is first cast as a billet annealed, cold rolled, annealed and cold rolled a second time and then bonded to the m |
| 4695169 |
Structural bearing |
September 22, 1987 |
| A structural bearing assembly in which a center plate is located upon a support 11. The support comprises an elastomeric core and a reinforcing outer layer 13 made up of a spirally wound cord of KEVLAR material embedded in a matrix of an elastomeric material which may or may not be t |
| 4679493 |
Reinforced pistons |
July 14, 1987 |
| A reinforced piston is provided for an internal combustion engine. The uppermost piston ring groove is as close as possible to the crown of the piston. At least the lower surface of the groove is defined by an en-cast insert and overlying this is a portion of the crown reinforced by fibr |
| 4677900 |
Pistons for internal combustion engines |
July 7, 1987 |
| A piston carries on its skirt surface a number of separate strips of a plastics material, such as a polyetheretherketone alloy, so that the strips are hydrodynamically lubricated and transmit lateral thrust from the piston to an associated cylinder or liner. The strips are just proud |
| 4674399 |
Pistons for internal combustion engines |
June 23, 1987 |
| A piston for an internal combustion engine has the conventional skirt replaced by top and bottom bearing surfaces spaced apart by a substantial gap of constant width. The top bearing surfaces are connected to the piston crown through the ring band whereas the bottom surfaces are atta |
| 4669369 |
Piston and piston ring assemblies |
June 2, 1987 |
| A two ring piston and piston ring assembly has an upper thin steel compression ring and a lower ring which is thicker than the compression ring and which acts both as a compression ring and an oil control ring. The lower piston ring is made of a material which is more conformable than |
