Abstract: An apparatus and method for forming grooves in a pipe for receiving mechanical pipe clamps are disclosed. The apparatus includes a holding fixture for securing the pipe and a carriage rotatably mounted on the holding fixture. Two arms are pivotably mounted on the carriage and extend on opposite sides of the pipe. Each arm has a grooving roller rotatably mounted thereon. An actuator connects the arms and forces the grooving rollers into engagement with the pipe. The carriage, arms, actuator and grooving rollers are rotated about the pipe in an orbit to form the circumferential groove. The method steps include forcing the grooving roller into the surface of the pipe at a fixed rate per revolution of the grooving rollers about the pipe in the orbit.

Abstract: A rotary drive apparatus for a rotary body for rotating a rotary body through extension and extraction of the piston rod of the cylinder accurately determines a rotation start and a rotation termination position, and performs intrusive forming with the rotary cam being accurately positioned. As such, high-quality work processing can be implemented; and furthermore, shocks of a cylinder are absorbed, and are not transferred to the rotary body.

Abstract: A method of producing metal rod of a blind consists of a number of processing steps wherein a metal board is first roller pressed with a pattern-surfaced roller to produce decoration patterns thereon, the metal board with decoration patterns disposed thereon is then further pressed and bent to have a multiple of equidistant folding lines defined thereon, and, finally, the metal board is bent via the folding lines and soldered up at both lateral edges thereof to obtain a polygonal metal rod with decoration patterns disposed thereon. The folding lines and decoration patterns thereof are arranged alternately without intersection thereof so that the decoration patterns will not be disfigured when said metal board is rolled up by the folding lines thereof, and the folding lines, distributing evenly the pressing force applied onto the metal board, will keep the polygonal metal rod of a blind into a straight line.

Abstract: A hand tool for expanding hollow bodies contains a casing (2) having a laterally extending first hand lever (3). A second hand lever, (7) which consists of steel and is joined to the casing so as to pivot on a shaft (5), bears a pinion sector (6) surrounding the shaft (5). The two hand levers (3, 7) form a pliers In the casing (2) a bore is disposed for guiding a rack consisting of steel, one end of which cooperates within the bore with the pinion sector (6) such that an expansion wedge can be displaced outwardly by a closing movement of the two hand levers (3, 7). The casing has means by which an expansion head with radially moving expander jaws can be placed coaxially onto the outwardly tapered end of the spreading wedge. To reduce both the weight and the force required for operation, the casing (2) and its hand lever (3) consist of a light material from the plastic and light metal group. The casing (2) thus forms together with the rack a low-friction combination of light material and steel.

Abstract: An automated sample collection workstation comprises a motor actuated sealing assembly having upper (23) and lower (25) clamping plates and fixtures to which particle-containing components of a particle testing unit such as an inertial impactor are mounted. The workstation also includes a sampling module (SM) including a plurality of sampling needles (SN) movable along two axes, and a solvent flow-through system. The solvent flow-through system includes a pump and multi-position valve arrangement communicating with the sealing assembly and the sampling module. The workstation can also include a pump calibration system communicating with the solvent flow-through system.

Abstract: In one embodiment, the invention is a pressure sensor calibration system comprising a pressure chamber in fluid communication with a pressure sensor to be calibrated, the chamber is pressurized to a static pressure level. An oscillating surface on a wall of the chamber imparts a rapid pressure fluctuation in the static pressure level of the chamber. These rapid pressure fluctuations in a high-static pressure level chamber are used to calibrate the pressure sensor.

Abstract: Method and apparatus for measuring the green-speed of a putting green including a golf ball rolling ramp. The ramp is supported by adjustable length legs above a green surface at a selected angle. A level vial attached to the apparatus is used to determine when the ramp is at the selected angle. A plurality of parallel grooves extend the entire length of the rolling ramp and allow for sequentially rolling a plurality of golf balls onto a putting green surface. Located at the upper end of each groove is a trigger mechanism for each of said grooves, including a trigger support block and a trigger arm pivotally movable thereon for releasing the golf balls into the grooves and down the ramp. The forward or release end of the ramp is curved for releasing the balls parallel to the local horizontal relative to the putting green surface.

Abstract: The invention relates to a process and to an apparatus for providing gas for isotopic ratio analysis. According to the invention, a gas is generated from an eluate of a liquid chromatograph (LC). Subsequently, the gas is separated from the eluate. Finally, the gas is fed to an instrument (IRMS) for isotopic ratio analysis.

Abstract: The current invention provides a process and apparatus for determining the density of a flowing fluid without requiring knowledge of the fluid's Theological properties. The process of the current invention is capable of providing continuous “real time” analysis of fluid density. The apparatus of the current invention comprises at least two pressure assessment zones fitted with fluid pressure sensing points. Pressure sensing devices connected to the pressure sensing points provide the data necessary to enable the calculation of fluid density.

Abstract: A method of measuring a water effect on an underground non-water well includes the steps of assembling a history of water cut (WC) measurements for the well over an extended period of time, determining a water cut rate of change (R) for the well based upon the history of water cut measurements, wherein the water cut rate of change is defined as follows: 1 ⅆ ( WC ) ⅆ ( t ) = R ,

Abstract: A directional coupler sensor is provided for measuring the moisture content of a substrate, such as hair. The sensor incorporates a high frequency directional coupler having a pair of generally parallel plates defining a coupling gap therebetween. A high frequency signal generator generates an electromagnetic field across the gap with the substrate placed across the coupling gap. The coupled power relates to the moisture content of the substrate. A pressure sensor is provided to ensure that the desired compactness of the substrate across the coupling gap is achieved to obtain accurate, reliable and consistent results.

Abstract: An exhaust gas recirculation (EGR) valve coil temperature is estimated non-intrusively using only existing sensors. In one embodiment an EGR valve coil temperature estimator running on a powertrain control module estimates the EGR valve coil temperature as a linear function of estimated charge temperature, inlet air temperature, coolant temperature, and vehicle speed. Coefficients of the mathematical function, which describe the degree of association between the inputs and EGR valve coil temperature, are calculated by measuring the actual EGR valve coil temperature over wide operating conditions. The powertrain control module uses the EGR valve temperature estimated in this manner to vary the drive signal to the EGR valve coil to open the EGR valve a desired amount.

Abstract: A diagnostic system and method identifies fuel injector failure in a fuel cell system including a fuel processor and a fuel source. A fuel injector supplies fuel from the fuel source to the fuel processor. A pressure sensor generates a pressure signal based on pressure between the fuel source and the fuel injector. A fuel injector diagnostic identifies fuel injector failure based on the pressure signal. The fuel injector diagnostic includes a moving window tracker that tracks the pressure signal over a moving window. The fuel injector diagnostic further includes a standard deviation or variance calculator that generates a standard deviation or variance based on the pressure signal in the moving window.

Abstract: An air pressure gauge assembly mounted to the valve stem of a tire for continuous monitoring of the tire inflation pressure without interfering with the common function of a valve stem, and an air pressure gauge assembly permanently mounted to the rim of a wheel for continuous monitoring of the tire inflation pressure. The valve stem mountable, flow-through air pressure gauge assembly offers the convenience of being mounted to an existing valve stem and still allowing inflation or deflation of the tire therethrough while continuously displaying the air pressure. The air pressure gauge assembly mountable through the wheel rim of an inflatable tire allows the continuous monitoring of the air pressure without interfering with the operation of a tire valve stem and replacement of a tire or a valve stem. Both types of air pressure gauge assemblies are designed to withstand substantial impact and to seal the tire in case the gauge body is accidentally broken off or fractured.

Abstract: The present invention provides methods and apparatus for determining the precise makeup of atomic and molecular structures, as well as providing the capability of modifying said structures. The invention uses induced resonant frequency wave effects to define and modify the electromagnetic, electrical, radioactive, atomic weight, and co-valent bonding characteristics of matter. One embodiment of the present invention may produce directionally controllable magnetic fields in gaseous media that interact with magnetically polarized vehicle surfaces to allow high-speed, highly energy efficient inter-planetary space travel. Another embodiment of the invention may neutralize waste products remaining from nuclear fission power production.

Abstract: An improved method and apparatus for non-destructive cleanliness evaluation in sputter targets using radio frequency waveform phase change and amplitude detection is disclosed. The apparatus acquires phase change and amplitude for a plurality of data points. The method disclosed for characterizing the sputter target material (52) employs the phase change and amplitude magnitude data for calculating cleanliness factors and generating pareto histograms.

Abstract: A tension sensing assembly for a seat restraint system in a vehicle includes a sensor plate adapted to be fixed relative to vehicle structure and a movable anchor plate adapted to be connected to belt webbing and movable relative to the sensor plate. The tension sensing assembly also includes a housing mounted to the sensor plate and a movable actuator disposed in the housing. The tension sensing assembly includes at least one spring disposed between the housing and the actuator. The tension sensing assembly further includes at least one magnet and a Hall effect sensor mounted to either one of the housing and the actuator. The anchor plate has a tab portion extending through the housing and cooperable with the actuator to move the actuator to deflect the at least one spring.

Abstract: An apparatus for testing stiffness characteristics such as modulus of elasticity E of an article such as a piece of lumber moving in a conveying direction transverse to the testing axis, comprises a bearing unit capable of contacting the piece of lumber at two spaced apart portions thereof. There is provided a first deflecting unit including a first working element being normally disposed in a first static position relative to the conveying path for applying a first thrust against a loaded area on the article at an intermediary portion thereof located between the spaced apart portions, to produce an article deflection of a first magnitude. Each working element defines a loading surface extending substantially parallel to the article-conveying path.

Abstract: A flow meter for measuring the volume of fluid flowing through the meter includes an inner cylindrical tube through which the fluid flows and an outer cylindrical tube tending over the inner cylindrical tube. The outer cylindrical tube is radially spaced from the cylindrical inner tube to provide an annular cylindrical space between the inner cylindrical tube and the outer cylindrical tube. A seal between said inner cylindrical tube and the outer cylindrical tube closes the annular cylindrical space adjacent ends of the annular cylindrical space. The inner cylindrical tube further defines at least one opening in a wall of the inner cylindrical tube to balance the fluid pressure in the annular cylindrical space with the pressure in the inner cylindrical tube. A flow restriction member is mounted to an inner surface of said inner cylindrical tube for restricting the flow of fluid through the inner cylindrical tube and produces a pressure drop in the fluid as it flows past the flow restriction member.

Abstract: A flow-indicating device is provided, comprising a tubular body adapted to direct a flow therethrough. The body has opposed ends, with one end being a downstream end, and has a flow element disposed therein. A shaping block is operably engaged with the body so as to form a constricted portion between the ends, the constricted portion of the body defining a constricted orifice having a downstream side. The constricted orifice is configured to prevent the flow element from passing therethrough. The flow element is disposed on the downstream side of the constricted portion and is configured to engage the constricted orifice when the flow is below a flow rate and to move toward the downstream end of the body as the flow increases over the flow rate to thereby indicate the flow through the body.

Abstract: A float-type flowmeter measures the rate of a fluid flowing upwardly through a tube based on the position of a float movably disposed in the tube and including a magnetic material. A coil is wound around the tube such that the intervals gradually decrease in an axial direction. The coil is excited by an alternating current supplied from an inductance change detector. The inductance change detector detects a change in the inductance of the coil which is caused when the float moves in the axial direction, and generates a voltage. A voltage-to-position (flow rate) converter determines a flow rate from the voltage corresponding to the position of the float.

Abstract: A reading device for torque tool includes a plurality of reading windows connected to the shank of the tool, and a plurality of marks are located on an outer surface of the handle. Each mark is composed of a notch defined in the outer surface of the handle and each notch has a mark piece 1 received therein.

Abstract: A lever is adapted to rotate about a first pivot at a first location responsive to a tension load from a webbing applied to an attachment pivoted or arcuately slotted about a second location. Tension load is reacted by a spring against a reaction element, and is sensed by either a displacement sensor or a force sensor. The sensed load range can be limited by a stop that engages the lever. The anchor bolt can be utilized as a stop in cooperation with a slot in the lever, wherein the lever is adapted to rotate about a stud depending from the reaction element. A tang portion of the lever engages a slot of a slide, and the displacement of the slide caused by a rotation of the tang reacted by springs at the ends of the slide is measured by a magnetic field sensor on the reaction element in cooperation with a pair of magnets on the slide.

Abstract: A model (1) is obtained by dividing a golf ball into meshes. The model (1) comprises a large number of elements (3). An outermost layer of the model is wholly formed by fine elements (3a) . The outermost layer is wholly formed by a fine element region. A number (Na) of divisions in the fine element region is larger than a number (Nb) of divisions on an inner layer in the fine element region. A ratio (Na/Nb) is 1.1 to 15.0. The fine element (3a) and an element (3b) on the inside of the fine element (3a) are tied to each other. A physical property value of the golf ball is analyzed by a finite element method using the model (1).

Abstract: Pressure is measured inside of a high pressure vehicle. A substance is compressed at a first pressure to create a preform having a first density. The preform is placed inside of a high pressure vessel and subjected to a second pressure, greater than the first pressure. The preform therefore changes in density to a second density, greater than the first density, whereby the second pressure can be determined. The method may also be used in determining the pressure inside of a food product during food processing and a high pressure vessel.

Abstract: An apparatus and method for mounting a device to a pipe. The apparatus is particularly useful for the installation and/or replacement of retrofit sensors and injectors to the piping of engine exhaust systems and emission control systems, and is designed to be used on pipes of different dimensions.

Abstract: A reciprocal force outputting mechanism comprised of a body having a slide slot that contains a slide block, thereby providing for the linear, reciprocal movement of the slide block within the slide slot. The slide block has an elongated opening formed centrally and a row of teeth are disposed along each of the two facing sides the said elongated opening, with a stem extending from one end of the said slide block inserted through a guide hole of the body. A fan-shaped gear is secured onto a power output shaft that rotates it. When the fan-shaped gear revolves and its teeth are respectively enmeshed with a row of teeth, the slide block is brought into reciprocal motion, causing the reciprocal movement of the stem which serves as a means of outputting force.

Abstract: A parallel shaft reduction gear with a backstop mechanism superior in replacement and maintenance operations is provided. The parallel shaft reduction gear that is used in combination with a motor and equipped in a gear case with primary-stage shafts which are disposed axially parallel to an output shaft. The output shaft and the primary-stage shaft are rotatably supported by bearings on the motor side and on the opposite side of the motor side with respect to the gear case, respectively. The backstop mechanism that prevents reverse rotation of the output shaft is installed in any one of the output shaft and the primary-stage shaft on the axially outside of the corresponding opposite motor side bearing (lower side in the figure).

Abstract: An over-running clutch assembly for an automotive transmission comprises an outer race having a cylindrical inner surface and an inner race engaged with a drop shaft of the transmission and having a cammed outer surface coaxial with the cylindrical inner surface and defining a gap therebetween and a roller clutch disposed within the gap; a biasing element to bias the roller clutch to a disengaged position; and an actuator to selectively overcome the biasing element to engage the roller clutch and lock the outer race and inner race and prevent relative rotation between the outer race and inner race, thereby preventing rotation of the drop shaft and movement of the automobile.

Abstract: A control apparatus (64) for a transmission.

Abstract: An interactive energy absorbing system including a steering column housing that is moveable along a collapse stroke corresponding to a force of impact by an operator. The interactive energy absorbing system includes an energy absorbing component that exerts a resistant force for resisting the movement of the steering column housing along its collapse stroke. The energy absorbing component includes a deformable strap that engages a stationary reaction member and a moveable reaction member, The stationary and moveable reaction members have an adjustable total active surface area for engaging the deformable strap and generating the resistance force. The moveable reaction member moves to adjust the total active surface area due to mechanical translation corresponding to the force of impact by the operator.

Abstract: This invention is an additional throttle control which is easily installed on an All Terrain Vehicle. This additional throttle control is a twist handle throttle control which operates in addition to the original thumb throttle control used on all A.T.V.'s. This invention allows the operator a choice of two types of throttle control. The purpose of this invention is to give the operator an alternate throttle control when hand fatigue is caused by the original thumb throttle control during long distance travel. The new twist handle throttle control is much easier to use for long distance travel and does not cause hand fatigue. A locking device is provided for the new twist handle throttle control when safety concerns are required and the original thumb throttle control should be used solely.

Abstract: An accelerator device includes an accelerator arm 12 provided with an accelerator pedal 11, a support case 13 internally holding and supporting an arm base part 12a through a support shaft 14, a return spring 16 and 17 for urging the arm 12 to rotate in a returning direction to return the pedal 11 to an initial position, and an accelerator sensor 15 for detecting a rotation amount of the arm 12 as an accelerator opening degree. A hysteresis producing mechanism includes friction pieces 20 and 21 attached to the arm base part 12a. A curved contact surface 20a of the friction piece 20 is held in contact with a contacted surface 19a of a friction part 19 of the support case 13. One end of the return spring 16 and 17 is hooked in one end of the friction piece 20 and 21, and the other end of the spring 16 and 17 is connected to the arm base part 12a in order to press the contact surface 20a and 21a of the friction piece 20 and 21 against the contacted surface 19a of the friction part 19.

Abstract: A bicycle handlebar is provided that has a center portion, a first end portion and a second end portion. The first end portion is located on a first lateral side of the center portion. The second end portion is located on a second lateral side of the center portion. The center portion, the first end portion and the second end portion are formed together as a one-piece, unitary tubular member. At least one the center portion, the first end portion and the second end portion includes a tubular attachment portion having an exterior cross sectional surface with at least one flat alignment surface. The flat alignment surface facilitates in mounting components and/or accessories, such as hand grips, shifters, brake levers, mirrors, displays, etc., to the handlebar.

Abstract: A shock absorbing handle bar grip to surround the opposite ends of metal handle bars of the kind that are found on a conventional bicycle. The handle bar grip includes inner and outer elastomeric layers that are bonded together along an irregular boundary region. The inner elastomeric layer of the grip is denser than the outer elastomeric layer. The irregular boundary region includes successive V-shaped pairs of faces, where each V-shaped pair of faces are aligned to make an angle of approximately 60 degrees. By bonding the inner and outer elastomeric layers of the handle bar grip to one another along an angled boundary region, some of the shock waves that are transmitted from the metal handle bars will be reflected at the boundary region to be absorbed within the inner elastomeric layer of the grip. By controlling the direction of the reflected shock waves the rider's hands will feel less of the vibrations that are generated when the wheels of his bicycle travel over a rough or bumpy terrain.

Abstract: A hollow crank arm for a bicycle comprising a body of elongated shape, at the ends of which are formed, respectively, an area for connection of the bottom bracket spindle and an area for connection of the pedal. The body includes a cavity of elongated shape and two solid end portions which are the aforesaid connection areas for the bottom bracket spindle and for the pedal. The crank arm is preferably formed through a forging process.

Abstract: A nanostructured tungsten carbide bulk material, sintered from tungsten carbide and metal such as cobalt nano-powders, comprises a tungsten carbide and a metallic binder such as cobalt phases. The tungsten carbide phase has nanostructures comprising a plurality of dislocations, twins, stacking faults, dislocation cells, nano-subgrains with preferred orientation or texture, or a combination thereof.

Abstract: A method is provided for removing a coating from a coated magnesium alloy product. The method includes a first treatment step of immersing the coated magnesium alloy product in a first alkaline solution, and a second treatment step of immersing the magnesium alloy product, which has undergone the first treatment step, in a second alkaline solution or in an acid solution. The second alkaline solution is different from the first alkaline solution.

Abstract: The invention provides a holding device for cylindrical objects such as containers, bottles, jars, and vials. The device has a platform having at least one notch therein; a first jaw disposed along a first portion of the notch, the first jaw including a textured surface; a jaw guide disposed along a second portion of the notch; a second jaw rotatably disposed within the notch, the second jaw including a textured surface, and the second jaw movable along the jaw guide to an open position allowing a container to be received between the first jaw and the second jaw; and a member coupled with the second jaw to force the second jaw toward the first jaw with sufficient force to stably hold the container during opening of the container.

Abstract: A device is suggested for processing cable-shaped conductors, particularly multicore cables, having at least one transport means (126) having a drive means (132) for transport supply and/or for lengthwise transport of cable-shaped conductor material (200), a cutting means (170) for cutting through cable-shaped conductor material, at least one first means (170) for processing the cut, cable-shaped conductor material, at least one guide means (130) for lengthwise guiding of the cable-shaped conductor material, the guide means (130) being implemented so that the free end of the cable-shaped conductor material may be pivoted out of its lengthwise direction, and at least one plate (110), implemented essentially perpendicularly to the cable direction, on which at least some of the means (126, 128, 130) of the device are positioned on one side.

Abstract: A multiple spindle tool has a single input drive motor and a plurality of output spindles. A gear arrangement including a central gear and three planet gears and three slip clutches are positioned between the drive motor and the output spindles. Each of the slip clutches drives a respective output spindle until a predetermined torque, set at respective clutches, is reached. Each of the slip clutches receives input rotation and torque from respective ones of the planet gears.

Abstract: A hex wrench assembly includes a tubular body having a reinforcement protrusion extending radially outward from a mediate portion of the body. A plurality of passages are defined in the body and a plurality of recesses are defined radially in an outer periphery of the body. Each recess shares a common axis of respective one of the passages. The head of a hex wrench is inserted in the passage and the handle of the wrench extends out from the recess.

Abstract: A tool comprising first and second elongated members which are pivotably connected at a joint. On one side of the joint there are first and second jaw portions and on the other side of the joint there are first and second handles. There is at least one retaining element disposed near a free end of each of the first and second handles. First and second cushioned sleeves respectively receive the first and second handles. At least one engaging element is formed within each of the first and second sleeves so as to engage the retaining element and retain the sleeve on the handle. The retaining element may be in the form of a notch and the engaging element may be in the form of a projection. The notch is defined by an interior surface which is curved about a center which is located within the handle. At least one barb is disposed at the periphery of the notch.

Abstract: A hand grip of a screwdriver for bits has a grip member having a first end and a second end. The first end has a tool holder for the bits. The second end has a stationary core with a round magazine having bit compartments extending in the longitudinal direction of the grip member and a closure device rotatable relative to the round magazine. The closure device has a sleeve providing an ergonomic outer shape of the second end of the grip member. The sleeve is rotatably supported on the stationary core and has a longitudinal access opening which passes externally across the bit compartments when the sleeve is rotated relative to the stationary core. The access opening can be aligned with the bit compartments for removal or insertion of the bit. The sleeve has a longitudinal length such that the upper end and the lower end form a closed ring, respectively.

Abstract: A perforation forming apparatus for a web fed paper processor generally comprising a perforator cylinder and an anvil cylinder. The rotatable perforator has at least a blade protruding radially from the cylinder. The rotatable anvil cylinder is adjacent the perforator cylinder and is contiguously engageable therewith. One of the perforator cylinder and the anvil cylinder is supported by eccentric bearing assemblies, comprising fluid cooled bearings eccentrically mounted in bearing housings and therefore adapted for rotation such that the eccentrically mounted cylinder can be pivotally displaced between a first and second position. Whereby pivoting to the second position during operation temporarily suspends perforation of the paper web, and returning to the first position during operation resumes perforation of the paper web.

Abstract: An apparatus for manufacturing a plurality of cores from a workpiece. In one embodiment, the apparatus includes a support structure for supporting the workpiece. A cutting assembly includes an arbor with a plurality of cutting blades spaced equidistant apart. Either one, or both, of the support structure and the cutting assembly may be move toward the other such that the cutting assembly engages the workpiece. As the cutting assembly engages the workpiece to cut the workpiece, the workpiece is rotated so that the blades of the cutting assembly cut the workpiece into the plurality of cores.

Abstract: A glass product cutting line includes a CNC cutting table, a sheet feeding device for feeding glass sheets to the glass cutting table, a plurality of harp racks, a sorting device and a dynamic cutting line control system. The control system optimizes the workpiece layout on the individual sheets with a biasing favoring individual workpieces assigned to a leading harp rack. The bias tends to cut workpieces of the leading harp rack on leading sheets fill the leading harp rack in a minimum time. The system allows for removal of a filled leading harp rack, by designating a new leading harp rack for the control system, which then dynamically adjusts the bias and associated cutting scheduling.

Abstract: In an apparatus and a method for the manufacture of perforated plaster boards, provision is made for the operations of punching and cutting the sides to take place one directly after the other with the boards being held in position by grabbing and conveying equipments during the entire working time.

Abstract: Slitting knife arrangement in a slitter is controlled by a controller by use of a fixed common program without changing the program when a new setting of slitting knife arrangement is specified. To derive a series of signals to move slitting knives in the slitter, the controller requires input of a next slitting width and the number of slitting knives to be used next. In addition to the two input parameters, additional parameters of current positions of the slitting knives and the number of slitting knives currently used can be acquired from memory in the controller for deriving the series of signals.

Abstract: Slide compound saws (1, 100, 150) may include a table (3b) defining a table surface. A saw unit (20) may be pivotable relative to the table surface. A first slide bar (31, 51, 251, 351) may be slidably coupled to the table and may be disposed substantially in parallel with the table surface. The first slide bar may define a first sliding distance (S1) of the saw unit in a direction substantially parallel to the table surface. A sliding device (24, 33, 52, 61, 62, 252, 352) may slidably couple the first slide bar to the saw unit. The sliding device may define a second sliding distance (S2) of the saw unit in the direction substantially parallel to the table surface. Preferably, the saw unit can slide up to a distance S1 plus S2 in the direction substantially parallel to the table surface.