Abstract: A method of expanding tubing comprises locating an expansion device in tubing to be expanded, vibrating one or both of the tubing and the expansion device, and translating the expansion device relative to the tubing, the vibration acting to reduce friction between the tubing and the device.

Abstract: A hydraulic circuit for linearly driving a movable roller-holder slider of a pipe bending machine, comprising a hydraulic cylinder (5) whose piston rod is connected to a slider holding a movable roller, the cylinder being fed with pressurized fluid from a reservoir (16) by a pump (15), through a three-position four-way valve (18), a check valve (12, 13) and an interposed throttling valve (19), that is operated to generate an increased pressure in said low pressure chamber of the hydraulic cylinder (5) in order to slow down the slider holding the upper roller in its primary motion when a programmable interval is reached from said predetermined position for each working pass.

Abstract: An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to ensure that calibration samples are produced at the optimal temperature for such devices. The housing temperature may be controlled by a semi-conductor heating and cooling device. The apparatus also controls the flow rate of the medium that is mixed with the impurities released from the permeation devices, yielding a more accurate, precise, and reliable calibration. The sample can be conveyed to the calibration device/instrument by hooking the apparatus directly to the calibration device. The invention also contemplates a novel method of calibrating apparatuses using a device kept at the optimal temperature, using a constant flow rate that minimizes variations in the calibrations.

Abstract: A flowmeter proving device and method for use in proving a flowmeter in situ under operating conditions comprises a pair of standard Coriolis based mass flowmeters (2, 3) which are connected together in series by a conduit (7) connecting the fluid outlet (23) of the first flowmeter (2) to the fluid inlet (32) of the second flowmeter (3). A valved fluid supply conduit (4) is connected to the fluid inlet (22) of the first flowmeter (2), and a valved fluid return conduit (8) is connected to the fluid outlet (33) of the second flowmeter (3). These supply and return conduits (4 and 8) enable the device to be connected to a fluid flow line containing a flowmeter which is to be proved such that fluid flowing in the flow line will flow in series through the flowmeter to be proved and the two flowmeters (2 and 3) of the proving device.

Abstract: A method and apparatus for controlling fraction collection in an eluent stream flowing from an LC column. A triggering detector recognizes the presence of a target substance according to characteristics of chromatographic peaks in the eluent stream and initiates a delay timer to trigger the fraction collector. A waste stream detector is disposed at any distance from the fraction collector to detect peaks in the waste stream flowing from a fraction collector. The signature of fraction collector actuation is seen by the waste stream detector, permitting the delay time to be adjusted for optimal collection of the target compound. The presence or absence of a peak or the characteristics of a remnant peak detected by the waste stream detector are used to confirm that the target component of the eluent stream was collected as intended by the fraction collector.

Abstract: A test fixture for testing directional pilot valves as used in connection with turbine engine thrust reversers, and an associated method of use. In a particular embodiment, the test fixture has a base and at least one support mounted to the base to support the directional pilot valve. At least one fastener permits attachment of the directional pilot valve to the support. An adjustable actuator is also mounted to the base and is capable of stroking the directional pilot valve to simulate valve positions that may be encountered in operation of the valve. The adjustable actuator is also capable of maintaining a force, as set by a technician, against the directional pilot valve.

Abstract: The present invention is for a simple, reliable and inexpensive method to calibrate a defect signal to determine the size of a defect in a pipe. A first reflected signal is received from the test area of the pipe. After attaching a clamp, a second reflected signal is received from the test area of the pipe. If defects are in the test area, by appropriate calculations using the first reflected signal and the second reflected signal, the size of the defect can be determined.

Abstract: A gas sensor includes a sensor element having a specific function, and a housing containing the sensor element therein and including a thread section, and a sealing surface which forms a sealing section together with an installation section at a position deeper than the thread section in a direction in which the sensor element is inserted. When the housing is screwed into the installation section, the release torque of the housing at 850° C. (1123 K) is 9 N·m or more, and an estimated value of a gap formed between the sealing surface and the installation section at 850° C. (1123 K) that is calculated according to a specific equation is 31 &mgr;m or less.

Abstract: The invention generally relates to a system and method for integrated gas delivery and leak detection to one or more applications. The system includes at least one application site, a process conduit extending from a process gas source site to the application site, a first and second process flow control at the process conduit, and a first pressure sensor.

Abstract: The present invention relates to physical chemistry and can be used for a quality test of liquids, in particular, multi-component liquid products, to ascertain the conformity of various process liquids, pharmaceutical preparations, foodstuffs, biological liquids to standard in pharmacology, food processing and chemical industries, and in medical diagnostics. The method of invention enables determining of the mechanical impedance within a drop (1) of test liquid having a specified volume, in the preferred embodiment, 5 mcl, placed on the surface of a piezoelectric resonator (3) of ultrasound frequencies, which provides for excitation of shear modes within drop (1) while it is drying up. The obtained time dependence of the mechanical impedance of drop (1) is used as the information parameter.

Abstract: An analyzing instrument (2) according to the present invention includes a capillary (6), a sample liquid inlet (42), and a liquid introduction controller for a controlled pattern of introduction of the sample liquid into the capillary. The capillary (6) preferably includes a common passage (60) and a plurality of individual passages (61-63) connecting to the common passage. In this arrangement, the liquid introduction controller selects for each of the individual passages (61-63) whether or not the sample liquid is introduced therein. The liquid introduction controller includes, for example, one or more through-holes (51-53) each communicating with e.g. the individual passages (61-63). The liquid introduction controller preferably selects for each of the individual passages (61-63) whether or not the sample liquid is introduced therein, by a selection whether or not the corresponding one of the through-holes (61-63) is opened or closed.

Abstract: An improved method is provided for performing nanomanipulations using an atomic force microscope. The method includes: performing a nanomanipulation operation on a sample surface using an atomic force microscope; determining force data for forces that are being applied to the tip of the cantilever during the nanomanipulation operation, where the force data is derived along at least two perpendicularly arranged axis; and updating a model which represents the topography of the sample surface using the force data.

Abstract: The invention is directed to a scanned probe microscope including one plate allowing for tip scanning and the other allowing for sample scanning, with the optical axis of the scanned probe microscope being free to permit incorporation into standard optical microscopes. The top plate can be hinged onto the bottom plate, or the top plate can simply be placed on the bottom plate and a rough approach is caused by a dc motor or other mechanism which will enable the two flat plate scanners to have a large z range. In another embodiment, the microscope includes three plates which allow sample scanning, tip scanning and two tips to be operational at the same time.

Abstract: A method and a device are provided for diagnosing operation of an internal combustion engine having a compressor for compressing air supplied to the internal combustion engine, which method and device permit diagnosis of as many error patterns in the compressor operation as possible without the use of additional sensors. An actual pressure ratio across the compressor is measured for a compression diagnosis. The measured actual pressure ratio is compared with a predetermined reference value, and an error is detected as a function of the result of the comparison.

Abstract: System for monitoring the deformations of a moving tyre (1) fitted on a rim (2) associated with a vehicle, comprising a moving station (20) placed in a predetermined position on the said rim (2), capable of measuring in at least one predetermined direction the distance between the said predetermined position and the inner surface of the tyre (111), and a fixed station (30) placed in the said vehicle and capable of receiving the said measurement from the said moving station. The fixed station (30) is capable of activating the measurement made by the moving station (20) at a particular moment of the tyre rotation cycle.

Abstract: The present invention provides an apparatus and method for continuously monitoring the integrity of a pressurized well bore fluid sample collected downhole in an earth boring or well bore. The CDR continuous by measures the temperature and pressure for the down hole sample. Near infrared, mid infrared and visible light analysis is also performed on the small amount of sample to provide an on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation a flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is overpressured or supercharged to obviate adverse pressure drop or other effects of diverting a small sample to the CDR.

Abstract: In a fuel tank level sensor 1 for measuring a remaining amount of fuel in accordance with a resistance value which is varied by moving a rheostat 1a utilizing a float 1c that vertically moves according to increase and decrease of the fuel in a fuel tank 2, change in resistance value of the rheostat 1a includes a linear range in which the resistance value linearly varies with the increase and decrease of the fuel, and a non-linear range in which the resistance value discontinuously varies under full-tank conditions where the fuel tank is substantially filled up with the fuel. Even upon undesirable increase of the resistance value of the rheostat 1a as a result of deposition of sulfides, the sensor 1 can always detect accurately that the fuel tank 2 is filled up.

Abstract: The invention relates to measuring devices used in the measurement of acceleration and, more specifically, to capacitive acceleration sensors. The capacitive acceleration sensor according to the present invention contains a movable electrode (5) of the acceleration sensor supported at an axis of rotation (7). Several pairs of electrodes are utilized in the acceleration sensor according to the present invention. Advantages of symmetry are achieved with the acceleration sensor structure according to the present invention, and it enables reliable and efficient measuring of acceleration, in particular in small capacitive acceleration sensor designs.

Abstract: Methods for determining a vibratory excitation spectrum are tailored to physical characteristics of a structure having critical elements located thereon to be subjected to vibration testing, such as a PCB to which connectors, resistors, capacitors, inductances, Integrated Circuits (IC) or Ball Grid Array components (BGA) are mounted. The physical characteristics includes a frequency response function corresponding to a testing environment temperature and defined in term of power spectral density amplitude over a global excitation frequency range for the vibratory excitation spectrum and characterized by a plurality of power spectral density amplitude peaks corresponding to a plurality of natural resonance frequencies, each being associated with respective mode shape and damping factor.

Abstract: Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector 2 that detects vibration in the radial direction, and the sound detector 3 that detects vibration in the circumferential direction are fitted on cylindrical motor casing 6, which contains the motor of a reactor internal pump. The dimension of both signals of a vibration waveform signal detected by the vibration detector 2, and a sound waveform signal detected by the sound detector 3 are matched in vibration calculating device 15, to thereby obtain an axial torsion vibration of a motor from the difference of both signals.

Abstract: A pressure and temperature sensor system, the system comprising one or more microstructure temperature-sensing elements formed on a substrate within a hermetically sealed area thereof, wherein such microstructure temperature-sensing elements comprise SAW temperature-sensing elements. Additionally, one or more microstructure pressure-sensing elements can be located above a sensor diaphragm on the substrate, such that the microstructure pressure-sensing element is formed from a SAW pressure-sensing element. One or more contacts can also be provided, which assist in maintaining the hermetically sealed area and which protrude through the substrate for support and electrical interconnection of the pressure and temperature sensor system.

Abstract: A heat loss gauge for measuring gas pressure in an environment includes a resistive sensing element and a resistive compensating element. The resistive compensating element is in circuit with the sensing element and is exposed to a substantially matching environment. An electrical source is connected to the sensing element and the compensating element for applying current through the elements. The current through the sensing element is substantially greater than the current through the compensating element. Measuring circuitry is connected to the sensing element and the compensating element for determining gas pressure in the environment to which the sensing element and compensating element are exposed based on electrical response of the sensing element and the compensating element.

Abstract: A heat loss gauge for measuring gas pressure in an environment includes a resistive sensing element and a resistive compensating element. The resistive compensating element is in circuit with the sensing element and is exposed to a substantially matching environment. An electrical source is connected to the sensing element and the compensating element for applying current through the elements. The current through the sensing element is substantially greater than the current through the compensating element. Measuring circuitry is connected to the sensing element and the compensating element for determining gas pressure in the environment to which the sensing element and compensating element are exposed based on electrical response of the sensing element and the compensating element.

Abstract: A strain sensor includes a metal plate, a first glass layer on the metal plate, a second glass layer provided on the first glass layer and having a color different from that of the first glass layer, an electrode on the second glass layer, a strain-sensitive resistor on the second glass layer, a circuit pattern on the second glass layer for connecting the electrode to the strain-sensitive resistor, and an overcoat glass layer for covering the strain-sensitive resistor and the circuit pattern. The strain sensor allows the layers to be identified while being manufactured, hence being controlled easily in its manufacturing processes.

Abstract: An apparatus and method for measuring the fatigue strength and fatigue damage of structures and predicting the service life remaining in the structure being tested. The apparatus is a specially designed fatigue gauge that contains breakable ligaments of either variable length to measure fatigue strength or fatigue damage of metallic, polymeric and composite materials or the same length but different composition to measure the fatigue strength and fatigue damage of certain composite materials.

Abstract: A device for determining the position of a tool and/or a load-bearing machine component of a machine tool or production machine includes a primary crossbeam arranged between two movable support elements and supporting the tool or the machine component, and a rigid secondary crossbeam which is also supported between the support elements. A contactless measuring unit is connected with the crossbeam and constructed to measure a deflection of the primary crossbeam relative to the secondary crossbeam. The deflection is hereby commensurate with a position of the tool and/or a load-bearing machine component and may depend on the acceleration force, weight and/or processing force exerted on the tool or the machine component.

Abstract: The vortex flow sensor is designed to measure the mass flow rate, the volumetric flow rate, or the flow velocity of a fluid flowing in a flow tube having a tube wall, and has two temperature sensors arranged in such a way that the vortex flow sensor may also be used with fluids which would corrode the temperature sensors. A bluff body in the flow tube sheds vortices and thus causes pressure fluctuations. A vortex sensor device responsive thereto is fitted downstream of the bluff body in a hole provided in the wall of the flow tube. The vortex sensor device comprises a sensor vane extending into the fluid. The temperature sensors are disposed in a blind hole of the sensor vane. Alternatively, the temperature sensor may be disposed in blind hole of the bluff body.

Abstract: There is provided a torsion shaft for the electronic power-assisted steering (“EPAS”) system of a vehicle. The torsion shaft designed for the EPAS system is made up of a shaft, where a first portion of the shaft is magnetized, and a second portion of the shaft is non-magnetized. The torsion shaft further includes a torsion cap attached to the shaft. Also provided is a torsion shaft for an EPAS system made up of a discreet first shaft portion and a discreet second shaft portion operatively joined together, where the first shaft portion is magnetized, and a second shaft portion is non-magnetized. The torsion shaft further includes a torsion cap attached to the shaft. Further provided is a method for making a torsion shaft where at least two portions of a torsion shaft are provided. At least one portion is magnetized, and at least one portion is left free of magnetization. The portions are then joined.

Abstract: A sensor device having a magnetostrictive force sensor is provided. To detect a force, the sensor device contains a TMR force sensor element having a magnetic detection layer of material having a magnetostriction coefficient &lgr;≧|5·10−6|, a magnetically harder reference layer, and a tunnel barrier disposed between these layers. Established in the detection layer is a starting magnetization that relative to the magnetization of the reference layer, which is directed in the direction of force, forms an angle of other than 0° and thus is rotated out of its starting position under the effect of the force.

Abstract: A test facility is provided for testing materials under high temperature, pressure, and mechanical loads. The facility provides a physically scaled system that simulates conditions in hot sections of gas turbine engines. A test article is coated with a test material and exposed to a hot combusting flow in a test section housing. The article may be a pipe or conduit member oriented at any direction to the flow. A second cooler flow of fluid is channeled through the test article to create a sharp temperature gradient in the test article and through the test material. A liquid-cooled sleeve is disposed about the test article to create an annular channel of combusting flow over the test article. The downstream end of the second cooler flow is connected to the upstream end of the main hot flow at the combustion chamber.

Abstract: Handler for testing a semiconductor device including a carrier unit for detachably holding, and carrying a plurality of devices, a test board having a plurality of test sockets for respectively coming into contact with the devices held at the carrier unit for testing the devices, a press unit for respectively pressing, and bringing the devices on the carrier unit into contact with the test sockets on the test board when the carrier unit is aligned with the test board, a spray unit for directly, and selectively spraying a high or low temperature gas to surfaces of the devices in contact with the test sockets from a position in a neighborhood of the devices of the carrier unit, to heat or cool the devices to a preset temperature, a gas supply unit for selectively supplying the high or low temperature gas to the spray unit, and a control unit for controlling the gas supply to the spray unit from the gas supply unit, thereby directly spraying high or low temperature gas to a surface of the device without an enclo

Abstract: A method for testing devices produced in front end lots involving loading a plurality of front end lots into a tester without requiring the tester to complete tests on a previous front end lot. A secondary lot of devices is unloaded from the tester, the secondary lot containing devices from a plurality of front end lots. The plurality of front-end lots may form a batch. In this case, a plurality of secondary lots unloaded from the tester could correspond to the front-end lots, and could be considered to be part of the same batch. All secondary lots of the batch, except for the last secondary lot of the batch, may contain only pass devices, such that all fail devices from the batch are unloaded and then tested together, in the last secondary lot. The loading of the front-end lots may be asynchronous with the unloading of the secondary lots.

Abstract: A precessional device having independent control of the output torque generated by the device and the oscillation rate of the device is disclosed. The device comprises a rotor supported by an axle wherein the ends of the axle are supported by a circular race. The circular race is rotatable, and may be driven by a motor or other means, thereby controlling the oscillation rate of the device independently of the output torque arising from the rotation rate of the rotor. The motor may be controlled by a control program that adjusts the rotation rate of the circular race to modify the shape of the resistance curve.

Abstract: In a transmission for a working vehicle, a PTO input shaft is located with its rotational axis extending in a vehicle lengthwise direction substantially at a widthwise center of a transmission case along a vehicle width direction. A running power input shaft is located with its rotational axis extending in the vehicle lengthwise direction substantially at the same position as that of the PTO input shaft along the vehicle width direction and at a lower side of the PTO input shaft. The transmission case provides an accommodation space for accommodating a differential gear unit, which space is displaced to a first lateral side of the vehicle along the vehicle width direction. A running power transmission shaft is located on the front side of the space with its axis extending in the vehicle lengthwise direction, and the running power input shaft, the running power transmission shaft and the differential gear unit are interlocked to each other via a running power gear train.

Abstract: Disclosed is a torus crank mechanism including a housing assembly (100) providing sealed chambers (145 to 148), a core (200) centrally arranged in the housing assembly while having a vertical shaft (215 or 216) protruded from one or each of upper and lower surfaces of the core, and horizontal shafts (211 to 214), a rotor (300) adapted to rotate in a reciprocating fashion around the core while having rotating vanes (311 to 314) arranged in respective chambers, and guide slots (315 to 318), bevel gears (410 to 440) rotatably supported by respective horizontal shafts while having respective eccentric sliders (411, 421, 431, and 441) rotatably and slidably received in the guide slots, and an output gear (500 or 600) rotatably supported by the vertical shaft. A multiple torus crank mechanism is configured by coaxially connecting torus crank mechanisms each having the above described configuration.

Abstract: An operator suitable for opening and closing casement windows includes a housing (e.g., a base and a cover), and an operator arm subassembly driven by a worm. The operator arm subassembly may include at least one operator arm pivotally disposed in the housing via a flanged bearing. The operator arm may define a gear. If a plurality of operator arms are present, a sun gear may be used. The flanged bearing properly aligns the components to reduce stresses encountered during use. The flanged bearing may have a base portion, a middle portion, and an upper portion in a stepped configuration. The base may engage the base of the housing. The upper portion of the bearing may engage a cover of the housing. A middle portion of the bearing pivotally joins the arm and/or sun gear. The instant flanged bearing provides a smoother, more efficient operation and increases the useful life of the operator.

Abstract: A mechanism for simultaneous angle adjustment of support elements (4), particularly for setting up a mold structure for the steps of a straight staircase, has a casing (9) in which at least two interdependent shafts (6) are arranged. Each of the shafts (6) extends into the next shaft in a nested configuration where the successive intervals between the shafts are adjustable. Each shaft has a threaded portion (6a) traversing an internally threaded block (11) that is located in the casing and holds one of the support elements (4). A shaft (12), running parallel to the two or more shafts (6), passes through the blocks and is equipped with eccentrics (13), where each of the eccentrics (13) is respectively associated with one of the blocks (11).

Abstract: Pressed shape steel forms a frame and long grooves. Guide rails are hardened. Thereafter, outer surfaces of the guide rails are ground. The hardened guide rails are integrally joined into the long grooves of the frame. Ball-rolling grooves are formed on the guide rails. Thus, a guide-equipped frame of an actuator is completed.

Abstract: A clutch assembly has a driving assembly and a transmission assembly. The driving assembly has an input axle and at least one driving gear. The transmission assembly is connected to the driving assembly and has an output axle, at least one driven gear, an inner axle and a unidirectional transmitting device. The driven gear is rotatably mounted on the output axle and engages with the driving gear. The inner axle is slidably mounted in the output axle and is engaged with the output axle to rotate with the output axle. The unidirectional transmitting device is mounted in the output to make the inner axle being driven by the at least one driven gear rotate in a unidirectional manner and to provide a clutching effect when the inner axle slides relative to the output axle.

Abstract: A compound gear assembly includes two gears, each gear respectively including interlocking features, which may be complimentary arcuate sections, for transferring torque between the gears. A clearance between the respective arcuate sections permits the gears to move radially relative to one another, which ensures that the gears mesh in a desired manner with the gears to which they are coupled. A snap ring is inserted into an annular groove located circumferentially about the respective arcuate sections, which secures one gear to another.

Abstract: A shift device, which sends a command signal to an electric actuator for shifting a plurality of gear ranges of a transmission of a vehicle by the electric actuator. The gear ranges include a plurality of drive ranges and a parking range. A shift lever is arranged to move between a neutral position and a plurality of manipulation positions located about the neutral position. A restoration mechanism restores the shift lever to the neutral position. A first sensor electrically detects a manipulation performed to select one of the drive ranges. A second sensor electrically detects a manipulation performed to select the parking range. The first sensor detects toward which of the manipulation positions the shift lever is manipulated.

Abstract: A shift device, which sends a command signal to an electric actuator for shifting a plurality of gear ranges of a transmission of a vehicle by the electric actuator. The gear ranges include a plurality of drive ranges and a parking range. A shift lever is arranged to move between a neutral position and a plurality of manipulation positions located about the neutral position. A restoration mechanism restores the shift lever to the neutral position. A first sensor electrically detects a manipulation performed to select one of the drive ranges. A second sensor electrically detects a manipulation performed to select the parking range. The first sensor detects toward which of the manipulation positions the shift lever is manipulated.

Abstract: The invention relates to a rack and pinion steering device having a rack (1) which is arranged in a housing (4) and is connected at both ends to the steerable wheels via track rods (6) and steering arms, and having a pinion (2) which engages continuously in the rack (1) and is connected to the manual steering wheel via a steering column, and having stop means (10; 11; 12) which are integrated at both ends between the housing (4) and axially movable parts of the rack and pinion steering device and limit the axial movement of the rack (1) in both steering directions, the stop means (10; 11; 12) comprising elastically compliant material (12) which is completely enclosed in nonelastic parts (10; 11) of the stop means (10; 11; 12) which can move axially with respect to one another.

Abstract: A shift device, which sends a command signal to an electric actuator for shifting a plurality of gear ranges of a transmission of a vehicle by the electric actuator. The gear ranges include a plurality of drive ranges and a parking range. A shift lever is arranged to move between a neutral position and a plurality of manipulation positions located about the neutral position. A restoration mechanism restores the shift lever to the neutral position. A first sensor electrically detects a manipulation performed to select one of the drive ranges. A second sensor electrically detects a manipulation performed to select the parking range. The first sensor detects toward which of the manipulation positions the shift lever is manipulated.

Abstract: An electronic throttle device 10 for motorcycles is mounted on a handlebar. A twist grip 16 may be rotated from an idle position to the full-throttle position. A rotation-position sensor 104 with a rotor unit and a stator unit is either mounted along the rotation axis of the twist-throttle control element 16 or outside of it. In the former case, an intermediary coupling unit 50 is provided that is fixed both to the twist-throttle control element 16 and to the rotor unit 46, 74 to rotate with them. In the latter case, an engagement element 92 is provided for coupling with a first toothed area 94 that engages with a toothed element 96 with a second toothed area 98. A Hall-effect rotation sensor or inductive rotation sensor is preferably used as a rotation-position sensor, whereby in the former case a rotor unit 46, 106 may be moved across from a stator unit 44, 108 with two stator partial elements 58a, 58b.

Abstract: The invention relates to a steering wheel with at least one device for the fastening of build-on parts, the steering wheel having a steering wheel skeleton surrounded by foam. According to the invention, there is provision for the device provided for the fastening of build-on parts to be, on the steering wheel skeleton, a holding part which is fixed by the steering wheel foam surround and which projects out of the steering wheel foam surround for the fastening of at least one build-on part.

Abstract: A hub for mounting a steering wheel on a shaft includes a plastic injection molded frustum-shaped body having a generally planar upper surface of a predetermined first diameter and an opposed generally planar lower surface of a predetermined second diameter larger than the first diameter. The upper surface is adapted to receive a plurality of fasteners for attaching the steering wheel thereto. A mounting bore extends through the body between the upper surface and the lower surface, and defines an inner surface that is adapted to receive an end of the steering shaft.

Abstract: The invention relates to a hollow shaft. The aim of the invention is to mount, with as little complication as possible, a component (2) head-on on the peripheral surface of a shaft that is at least sectionally configured as a hollow shaft (1) and to leave as much space as possible for hydraulics channels passing through the shaft. According to the invention, the shaft is mechanically flared by means of an axially movable device and a support (4) for said axially movable device is mounted within the hollow shaft (1) or the hollow section of the shaft in a radially positive or non-positive manner.

Abstract: By blocking off a partial passage opening in a lubricating oil supply passage of a transmission gear mechanism by attaching a transmission holder, an operation to block off the passage opening is omitted. Supply of lubricating oil to a main shaft and a counter shaft of a transmission gear mechanism is carried out using branched passages from a main gallery, and the branched passage constitutes a lubricating oil supply passage to the main shaft while the branched passage constitutes a lubricating oil supply passage to the counter shaft. A partial passage opening of the branched passage is then blocked up at the time of attaching a transmission holder to the transmission case, and in this way a lubricating oil supply passage to the counter shaft is formed.

Abstract: A gear case forming a lower part of a marine propulsion machine is provided with a gear chamber for housing a bevel gear mechanism used for transmitting power from a drive shaft to a propeller shaft. The gear chamber is connected to the bottom of a vertical drive shaft receiving bore formed in the gear case to receive a drive shaft. The gear case is provided with a vertical shift rod receiving bore parallel to the drive shaft receiving bore and having an open upper end. A connecting hole is formed in the gear case to connect respective upper parts of the drive shaft receiving bore and the shift rod receiving bore. A covering member covers the upper open upper end of the shift rod receiving bore. A shift rod is passed through the covering member into the shift rod receiving bore. The covering member has upward bulging walls defining pressure-compensating chambers.