Abstract: A gear suspension system is disclosed that permits movement of a gear, such as a spiral bevel or hypoid gear relative to its pinion with six degrees of freedom. The gear suspension system includes a support structure with a moveable carriage mounted thereon. The carriage is supported by six actuators interconnected together to form three connection joints to the support structure and three connection joints to the gear carriage. The gear is mounted to the carriage for rotation about a central axis. The actuators allow the gear mounting distance, the shaft angle, the H position and the V position to be adjusted. In addition, the actuators further allow the gear carriage to be rotated about the central axis and to be rotated about an axis that is parallel to an axis of a pinion and passing through the central axis.

Abstract: A device is disclosed to measure the level of material within containers, in particular containers in which free-flowing materials having different dielectric constants, for example water and oil, are collected. The device includes a sensor, which is arranged electrically nonconductively fashion on an outer side of the container and forms part of an electric capacitor, and an electrically conducting complementary plate, which is arranged on the inside of container opposite the sensor and spaced therefrom, which, forms another part of an electric capacitor.

Abstract: An aircraft fuel gauging system has three or more optical pressure sensors 1 and 3 mounted in a tank 10. One sensor 1 is mounted on the floor 14 of the tank, the other sensors 2 and 3 being displaced from the first sensors and from each other in the x, y and z directions. The output of each sensor 1 to 3 is representative of the mass of fuel above the sensor and is supplied to a processor 20. The processor 20 is also connected to an three-axis accelerometer system 21, a pressure sensor 24 above the liquid and a density sensor 25. Utilizing these inputs the processor 20 computes the location of the fuel surface and, from information in the store 22 of tank shape, calculates the mass of fuel.

Abstract: A method and device for measuring higher mode vibrational energy is provi. The device includes a plurality of sensors placed with uniform spacing around the circumference of a structure and a processing unit. The sensor placement may be either on the inside or the outside of a structure depending on the structure and on the experiment. In operation, signals from individual sensors, preamplified if required, are fed to processing equipment. The processing equipment performs a double Fast Fourier Transform. The first transform is done on temporal data thereby providing an output representing a frequency spectrum. The second transform is performed on simultaneous data readings from all sensor locations thereby providing an output representing a spectrum of mode numbers. The combining of these outputs provides a three-dimensional plot of amplitude versus frequency and mode number.

Abstract: A two-wire ultrasonic transmitter senses level of a material and controls current of power supplied thereto to a magnitude representing sensed level The transmitter comprises a transducer mounted in proximity to a material, the level of which is being sensed. A power supply circuit receives power for operating the instrument. A drive circuit is connected to the transducer and the power supply circuit and periodically energizes the transducer to transmit an energy pulse to be reflected off of a surface of the sensed material. An amplifier circuit is connected to the transducer and develops an analog signal having a magnitude corresponding to reflected energy received by the transducer.

Abstract: A semiconductor pressure sensor is manufactured by integrally encapsulating a semiconductor pressure, sensor chip, a pedestal, leads, wires and a die pad in an outer package except for the surface of a diaphragm of the semiconductor pressure sensor chip and the reverse side of the die pad. The ratio of the thickness of the pedestal to the thickness of the semiconductor pressure sensor chip is 7.5 or less, while the ratio of the diameter of an opening formed in the outer package at the surface of the diaphragm and the diameter of the diaphragm is 1 or more. The thermal stress generated in the semiconductor pressure sensor chip can freely be reduced to a desired value, and a semiconductor pressure sensor exhibiting a desired accuracy can therefore be obtained. Furthermore, since the semiconductor pressure sensor can be manufactured by an ordinary IC manufacturing process, a semiconductor pressure sensor with reduced cost and having high quality can be produced.

Abstract: A capacitive pressure sensor suitable for making highly sensitive, low pressure measurements is disclosed. The sensor may be mounted into a 0.5 mm OD catheter suitable for multipoint pressure measurements from within the coronary artery of the heart. The sensor employs a transducer which consists of a rectangular bulk silicon microdiaphragm several hundred microns on a side by two microns thick, surrounded by a supporting bulk silicon rim about 12 microns thick. Both the diaphragm and the rim are defined by a double diffusion etch-stop technique. The transducer fabrication process features a batch wafer-to-glass electrostatic seal followed by a silicon etch, which eliminates handling of individual small diaphragm structures until die separation and final packaging. An addressable read-out interface circuit may be used with the sensor to provide a high-level output signal, and allows the sensor to be compatible for use on a multisite catheter having only two electrical leads.

Abstract: A formation test tool is set forth in the present disclosure and has a snorkel on one side and upper and lower diametrically opposite back-up pistons on the opposite side. The back-up pistons are constructed with a back-up plate on the end of the back-up piston encircling and centered around a formation punch. The formation punch has a small diameter and specified length so that, during operation, the punch contacts the sidewall of the well borehole, and pressure is increased thereafter to force the punch into the formation until fracture failure occurs evidenced by a change in hydraulic pressure and a lurching movement of the back-up piston as the punch penetrates the formation. By knowing the diameter of the punch and by observing the hydraulic pressure necessary to obtain failure of the formation at the point of contact with the punch, data can be obtained which is indicative of the compressive strength of the formation.

Abstract: An apparatus in which a magnetic field is generated by an excitation coil provided in the outside of a conduit and electromotive force generated in electrodes attached on the conduit is detected to thereby measure a flow rate of a fluid flowing in the conduit, in which the conduit is made thinner in a manner so that a ratio of the axial length of the conduit to the inside diameter of the conduit is set to a value within a range of from 0.2 to 1.0, and in which correction data previously analyzed in accordance with magnetic permeability and inside surface conductivity of a mate piping to which the conduit is to be connected are stored so that a detection signal from the electrodes is corrected on the basis of the correction data to thereby measure the flow rate of the fluid flowing in the conduit.

Abstract: An optical fiber (22) is tested for payout properties by supporting it on a payout support (24 ), preferably in the form of a hollow frustum of a cone, and attaching an unsupported end (26 ) of the optical fiber (22) to a projectile (42) that is thereafter propelled rapidly by expanding gas. The expanding gas is preferably generated explosively or by pressurizing the rearward end of the stationary projectile (42) and then releasing the projectile (42). A pneumatic gun (40) suitable for such testing has a barrel (44) sufficiently large to receive the projectile (42), a latching mechanism (60) that releasably engages the projectile (42), a closure (50) at the rearward end of the barrel (44) with a bore (58) therethrough concentric with the axis of the barrel (44) through which the optical fiber (22) passes and is drawn. The pneumatic gun (40) further includes a gas reservoir (48) that supplies a pressurized gas to the back side of the projectile (42).

Abstract: A method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of an accelerometer in close proximity to the restriction orifice controlling the gas flow, or determining the Power Spectral Density from the output of a pressure transducer in contact with the gas flow on the down stream side of the restriction orifice. The liquid flow can then be obtained from a predetermined correlation between the RMS Vibrational Signal and the mass or liquid flow rate.

Abstract: A transducer (30) for sensing tension loading of a conveyor chain (12) of the type including single and dual links (14,16) pivotally connected in an alternating relationship includes a transducer link (40) having opposite ends (42,44) for connection along the chain and also includes a transducer member (46) mounted by the transducer link (40) between its ends. The transducer member (46) includes an opening (48) and at least one strain gauge (50) mounted thereon. A clamp (52) of the transducer compresses the transducer member (46) as tension loading is applied between the opposite ends of the transducer link to provide a strain gauge indication of the extent of the tension loading. The clamp (52) includes a clamp member (54) that opposes a clamping seat (56) on the transducer link (40) with the transducer member (46) clamped therebetween by a connector (58) that extends to one end (42) of the transducer link.

Abstract: A sample injector is provided, which enables changing of the volume of the sample chamber between a very small volume and larger volumes. The injector includes a housing, a stator (16, FIG. 3) mounted in the housing, and a rotor(26) pivotally mounted in the housing, with the stator and rotor having facewise adjacent faces extending perpendicular to the pivot axis. First and second stators are alternately mountable in the housing, with the first stator having a disc element (44, FIG. 3) that includes a storage channel (62) in one of its faces to form an internal storage chamber of small volume. The other, alternate stator has at least one disc element (44X, FIG. 5) that includes a pair of through passages (52X, 56X) therein that are constructed to connect to sample ports (52, 56) of a disc element that hold the opposite ends of an external sample loop (90) to enable the injector to be used with a larger storage volume.

Abstract: A suspension device is provided for simulating the free-free boundary conditions of space for a low frequency structure. A support cable is connected at one end to the test structure and is vertically guided by a guiding ring. The other end of the cable is connected to a cam having an outer circumference which supports the cable. A drive axle passes through the cam center of rotation and is rotatably journalled in a suitable manner to a rigid structure. Two torsion springs are provided about the drive axle. One end of each spring is connected to a respective face of the cam and the other end is connected to the fixed support. The cam is shaped and the torsion springs selected such that Wr.sub.(t) =T.sub.s(t), wherein W is the weight of the test structure; r.sub.(t) is the instantaneous moment arm defined as the perpendicular distance from the rotational center of the cam to the cable at time t, and T.sub.s(t) is the total spring torque exerted by the two springs on the cam at time t.

Abstract: The present invention discloses an apparatus for the rotation of, for example, workpieces to be machined, on a carrier which can be set in rotation by a pinion shaft with toothed strips via a rack, the rack being arranged perpendicularly to an axis of the pinion shaft in a cylinder bore of a housing slidably between covers closing the cylinder bore, pistons provided on the rack at each end forming with a respective cover a chamber which can be subjected to pressure medium, and the toothed strips of the pinion shaft meshing with the toothing of the rack between the two pistons, wherein the spacing of the toothing and pinion shaft or toothed strips is variable.

Abstract: Cast iron gears, such as those used as cam gears on engines and as used for fuel injection gear pumps, which have a hub and a rim that are thick in comparison to the relatively thin web used to interconnect the hub with the rim and a process by which such iron gears can be cast, especially in a vertical orientation. To eliminate porosity problems, single flow channel of substantial thickness is incorporated into the mold cavity which forms a flow rib that runs radially between the hub and rim of the gear being formed. To compensate for both the added weight of the rib that is produced on the web of the resultant gear, as well as to counterbalance the effect caused by the presence of a single rib, at least one opening is formed in the web at each side of the rib.

Abstract: A sleeve which may be used to align a reciprocable member with operations performed in structurally discrete abutting members. The sleeve has coaxial axially extending diametral portions each having different diameters. The juncture of the diametral portions forms an annular face which abuts the outer face of one member when a first diametral portion of the sleeve is placed in a respectively sized bore formed therein. The second abutting member may then be aligned with the first member by locating the respective structure such that a bore formed in the second member receives the second diametral portion of the sleeve. A bore formed in the sleeve may be used to slidingly support a first translatable member. In this manner the respective positions of the abutting structures are established and respectively aligned with a translatable member interacting therebetween.

Abstract: A pretensioned cable transmits power along a first support member (link) from a rotary actuator to a rotating output joint, typically an output pulley fixed to a second link arm but rotatable in a coupling between the first and second links. A reducer, typically two sets of coupled idler pulleys of different diameter, is mounted at a point removed from the actuator, and preferably as close as possible to the output joint. An axially split spool mounted on the actuator output wraps the outgoing and returning cable sections on different halves of the spool in opposite directions to provide pretensioning of the cable in the entire cable circuit at one point. To form a differential, a pretensioned cable carried on paired pulleys having smooth outer surfaces parallel to the axis of rotation couples the pulleys. The pulleys have axes of rotation that can intersect and their cable carrying surfaces are closely spaced, preferably by less than half the width of the cable.

Abstract: An X-Y drive apparatus suitable for use in positioning an electronic component or the like at a desired position, such as a mounting position of a printed circuit board, is provided. Each of X and Y table units includes an elongated housing provided with a pair of stationary pulleys at its opposite ends and a table provided with a pair of moving pulleys. A pair of brackets is also mounted on the housing, each located between one of the stationary pulleys and a corresponding one of the moving pulleys. A belt, having its one end fixedly attached to one of the brackets, extends first around one of the moving pulleys, then around each of the stationary pulleys, and then around the remaining moving pulleys with its remaining end fixedly attached to the remaining bracket.

Abstract: A core length adjuster mechanism provides adjustment for a push-pull cable system having a core disposed within a conduit. The core and the conduit are flexible for much of their length, with the core being a rigid rod at the ends. An end of one of the rods is slidably disposed within a body of the adjuster mechanism. The body has generally rectangular shape, elongated in an axial direction. The body has a means of swivelable attachment integrated into it. The body has a rectangular opening through perpendicular to the axis from a top to a bottom. There are teeth transverse to the axis in the opening on sides paralleling the axis. A clip is disposed in the opening. The clip can be manually moved from an adjust position to an engaged position It has teeth complementary to the teeth in the opening that engage those teeth when the clip is in an engaged position by pressing it into the body. When the clip is in the adjust position, the teeth are not engaged.

Abstract: The invention relates to a sliding regulator, having a sliding slot which is closed without leaks against dust, etc., even in the immediate surrounding of the sliding member. According to the invention, this is achieved by a rubbery-elastic sealing lip associated with the sliding slot, which consists of a string of aligned lamellae attached to each other so as to form a flexible barrier against penetration of unwanted matter. The lamellae barrier deforms as the sliding member slides through it, so that the interface between the two remains substantially constantly sealed.

Abstract: An improved pedal shaft core is characterized in that the contact surfaces of both shaft core and shaft bearing are designed to be oblique and conical to enable the bearing to comprise roller nest bearing and a casing of circular and conical arc so as to enhance the rotational stability of the pedal shaft core. The toothed cup of the shaft core comprises grease filling apparatus of an inclined type located on the external surface of one end thereof. The improved pedal shaft core further comprises of a pair of W-shaped non-return washers of waterproof and oil-proof nature.

Abstract: A pedal mechanism for a human propulsion vehicle such as a bicycle wherein the length of each of the pedal arm is increased during the power stroke and decreased during the return stroke of the rotation cycle. It comprises a pair of sun gears rigidly attached to the frame of the vehicle, each meshed to an adjacent planetary gear of identical diameter. A lever, radially projecting from each of the planetary gears, generate the alternative movement of the corresponding pedal arm. The levers also change the angular orientation of the pedal arms by moving them toward the power stroke zone, forcing the pedals arm to stay as long as possible in power stroke, thus giving the pedal mechanism no dead point. This pedal mechanism is very suitable for bicycle, especially mountain bicycles and racing bicycles where high power and efficiency are crucial.

Abstract: A tubular shaft has a portion of reduced inner diameter at a location where joining to an apertured member is desired. The aperture in the member is lobed with splines in the lobes and has an undercut groove, or groove and is hardened. The shaft is inserted in the aperture and the reduced inner diameter portion is expanded to force the shaft material into the lobes and groove and around the splines to form a connection which resists torque and axial separation. The tube expansion is effected by forcing a series of balls through the reduced diameter portion, each ball being slightly larger than the reduced diameter and larger than the previous ball but smaller than the remainder of the shaft I.D. A crankshaft is assembled with this method wherein counterweights have lobed apertures to receive end portions of crank pins and main journals having reduced I.D.'s.

Abstract: A gear case comprises three parts: upper and lower sections of heavy duty castings or fabricated steel, the lower section having an open bottom, and a light gauge sheet metal pan enclosing the bottom of the lower section. Alternatively, the upper and lower sections comprise a one piece rigid housing open at the bottom. The pan is wider than the upper and lower sections to afford extra lubricant capacity. A molded baffle resides in the pan to separate active from reserve volumes of lubricant. The heavy duty sections have machined openings to receive seals and afford dimensional stability. The sheet metal pan is collapsible to take the consequences of impact in case of minor derailment and is easily repaired or replaced.

Abstract: According to a shift control, a release element is released in such a manner as to allow an increase in the input shaft speed within a predetermined degree for a period of time, and subsequently an apply element is engaged during the period of time.

Abstract: The invention relates to an electrohydraulic control for an automatic transmission of a motor vehicle. In order to be able to utilize, in the coasting operation of the motor vehicle in the driving position D of the automatic transmission, also the first gear, a one-way clutch, which transmits only driving torques but is required for the shifting operation, when the first gear is engaged, is bridged by a brake so that the transmission can transmit not only driving but also coasting torques and can therefore transmit the engine braking torque.

Abstract: A floor mounted shift control mechanism for a vehicle wherein adjustment of each of the cables from the transmission and the key cylinder can be made inside the vehicle within the shift control mechanism. The shift control mechanism also includes provisions for locking the shift lever in its Park position when the key cylinder is in its Lock or Accessory positions; and for preventing the ignition key from being removed from the key cylinder unless the shift lever is in its Park position. There are also included provisions for requiring a high force to override the Locked-in Park condition, while operationally subjecting the cable from the key cylinder to reduced loads; and for an assured detent feeling for the driver while shifting through the various shift positions.

Abstract: A new, novel device for holding a container while applying torque specifically to the closure in the direction of opening. This device is readily adaptable for use with an electric motor or ratchet to provide hands free operation The device may be made small enough to serve as a counter-top appliance for home use. In addition, the device is self sizing to serve a wide array of container closures.

Abstract: A generally "L" shaped tool of rigid construction includes a first planar leg plate orthogonally mounted to a second arcuate leg plate, wherein the first leg plate includes a first leg plate bifurcated free end defining a first leg plate notch, and wherein the second leg plate includes a convex leg plate surface oriented in confronting relationship relative to the first leg plate free end. The second leg plate includes a second leg plate free end formed with a first medial notch and respective second and third lateral notches positioned adjacent the free end relative to opposing first and second sides of the second leg plate to provide for multiple access to various nails and the like in removal of shingles and shakes without damage to underlying felt. A modification of the invention includes a support mount for the tool of the invention.

Abstract: A fastener support apparatus for facilitating the installation of individual screws into a work surface including means for driving individual screws into the work surface; a support member borne on the driving means; a screw support assembly borne on the support member and defining a screw receiving station which is operable to receive the head of the screw; a locking assembly borne on the screw support assembly and operable for travel from a first, partially occluding position relative to the screw receiving station to a second, substantially nonoccluding position; and an actuating assembly borne on the screw support assembly and which positions the locking assembly in the first or second positions.

Abstract: A tong, preferably a power tong, with one or more floating jaws which are releasably retained on and selectively movable with a rotary device; in one aspect the jaws having a compound jaw camming surface with a primary cam action surface, a rest surface, and a fixed positioning surface; and in one aspect such a tong with a releasably jaw urging system for releasably urging the jaws against camming jaw rollers.

Abstract: An adjustable wrench having a housing with a handle and having a plurality of jaws that extend out the bottom of the housing and move radially with respect to one another. The housing contains a control disk which may be locked to the housing to prevent the jaws from turning with respect to the housing. A jaw adjusting disk is disposed beneath the control disk and extends out the bottom of the housing. The adjusting disk contains cams that open and close the jaws depending upon the direction of rotation of the adjusting disk.

Abstract: A ratchet wrench includes an expandible fastener engaging socket which may be positioned over a conventional fastener and which may then be decreased in diameter to effect a gripping attachment. A locking lever is attached to the ratchet wrench and is usable to both decrease the diameter of the expandable socket and to lock the socket in attachment with the fastener. The lever operates in the manner of a conventional lockable plier so as to provide the ratchet socket wrench with a plier-like function.

Abstract: An oil filter removal tool for removing an oil filter contained within the oil pan of an internal combustion engine is disclosed. The tool has a pair of outwardly engaging jaws, a rotatable central socket drive element, means for connecting the outwardly engaging jaws to cooperatively engage the central socket drive element, and means for outwardly biasing the jaws. The outwardly engaging jaws each have a substantially semicircular outer wall which has means for engaging an oil pan filter cap. The outwardly engaging jaws each further have an inner wall which has a central polygonal surface and retaining means for retaining the central socket drive element within the jaws. The central socket drive element has an upper portion and a lower polygonal base which has a plurality of drive walls.

Abstract: There is disclosed a torque transmitting or coupling arrangement for a fastener drive system or the like, wherein the respective externally configured and internally configured components are provided with a series of mating, elliptically curved flutes and lobes. In both the externally and internally configured components, the flutes and lobes are defined by a first series of elliptically curved surfaces which alternate with a second series of elliptically curved surfaces, with the respective surfaces merging smoothly and generally tangentially to define the alternating flutes and lobes on each said component. One of the components, either the externally configured or the internally configured component will preferably have the flutes and lobes thereon generated from ellipses of substantially equal dimension. The other component, of necessity, will have the flutes and lobes generated from ellipses of differing dimensions.

Abstract: The feeding apparatus has a holding plate (15) which is provided with passage bores (18) for the accommodation and mounting of the rear end of the guide tubes (12) of the turning machine. The holding plate (15) is mounted on a supporting frame (16) for rotation about the central axis of the spindle drum of the turning machine. On the side of the holding plate (15) facing away from the spindle drum there is a cover plate (26) which is coupled non-rotatably to the supporting frame (16) and which is sealed against the holding plate (15). Between the holding plate (15) and the cover plate (26) is a distribution passage (38) with which on the one hand the openings of the guide tubes (12) are in communication and to which on the other hand a damping fluid feed line is connected.

Abstract: An automatic precision lathe is provided with a rotating main spindle movable in its axial directions, a slide movable in directions perpendicular to the axial directions of the main spindle, and a first subspindle and a second subspindle provided on the surface of the slide which faces the main spindle. The first and the second spindle are moved together with the slide to be alternately aligned with the main spindle to held the tip portion and the largest intermediate portion of the workpiece, respectively. The automatic precision lathe machines a workpiece having an intermediate portion with the largest diameter very accurately at a high rotational speed and at a large feed.

Abstract: A multispindle lathe is disclosed which has an indexable drum including a plurality of main spindles. A secondary spindle opposes the main spindles so that it is coaxial with one of the main spindles at an indexed position. The secondary spindle is rotatable on a fixed axis and can be moved axially towards the main spindle. The rotation of the secondary spindle can be synchronized with the rotation of the main spindle so that both spindles can hold a workpiece. A cut off tool moves transversely to the spindles to cut the workpiece from bar stock which has been fed into the main spindle. After cut off, the secondary spindle moves away from the main spindle and a secondary tool moves transversely to the secondary spindle to machine the end of the workpiece which has just been cut off. Movement of the secondary tool and secondary spindle can be coordinated to form curves and tapered threads.

Abstract: A machining unit, in particular in a numerically controlled lathe, has a rotary head equipped with four pivoting tools for machining parts which pass axially through this head without rotating. Each tool is mounted on a respective pivoting support (6a-6d) provided with a helicoidal guiding surface (26a-26d) the axis of which coincides with the pivoting axis (7a-7d) of the support. The four tools are controlled by means of two concentric annular sockets (30, 42) controlled in translation. The inner socket (30) has two outer surfaces which rest against the guiding surfaces (26a, 26b) of two of the supports. The guiding surfaces are helixes of opposite pitch, and therefore one of the corresponding tools moves toward the part as the second tool moves away from it. The outer socket (42) controls the other two tools in the same manner.

Abstract: A dicing device for potatoes and the like adapted to be rested upon the top edge of a pail and having cutting wire portions through which a soft boiled potato is first sliced into horizontally sliced layers while passing onto a grated area and thereafter pushing the sliced layers through grated meshed cutting wires of a horizontal portion to form diced cubes of the potato as they are delivered to the underlying pail. The device generally comprises a horizontal frame portion having mesh cutting wire lengths and a raised portion extending upwardly from the forward end of the horizontal portion with layer cutting wire lengths and through which the full potato is passed to deposit the sliced layers upon the horizontal mesh grating portion. All cutting wires are a solitary wire threaded between opposite sides and ends of the frame portions and wound upon a tightening screw.

Abstract: Upper and lower drums each with a blade are separated from each other by a hydraulic cylinder until a rotating velocity of the drums are accelerated to a predetermined level. Then, the drums are relatively approached by the cylinder so that gears each fitted to a shaft of the corresponding drum are engaged with each other to keep constant a gap between the blades. The blades are approached to a feed line of a strip to cut off the strip.

Abstract: A machine for cutting pin headers of a desired length from lengths of pin header stock is disclosed. A mechanism is provided for adjusting the width of the track opening that receives the pin header stock so that stock of various widths may be accommodated in the machine. A portion of the track is continuously movable, that is, it is never rigidly clamped in a stationary position, but rather, its position relative to a stationary portion may be adjusted by a single control element.

Abstract: A cloth cutter knife permeable bed formed from a plurality of elongate support members, preferably plastic extrusions, provides a permeable support surface in a cloth cutting machine upon which a lay-up is supported for cutting by a cutter head. The extrusions are cut up by the reciprocated knife of the cutter head to form a multiplicity of bristles which after subsequent cutting operations of the lay-up create a dense knife permeable bristle bed for supporting the layup in a generally flat manner.

Abstract: A desk-top cutting machine generally comprises a base, a turntable mounted on a base to be rotatable, a work support fence mounted to the turntable for guiding a workpiece to be cut, a cutter disposed swingably with respect to the workpiece put on the turntable, and a turntable positioning device for positioning the turntable to a predetermined position for a workpiece cutting operation. The turntable positioning device comprises a lock mechanism secured to a side end of the turntable and adapted to be engageable with the base, a positioning engaging assembly disposed on one of the turntable and the base, and an engaging receive member formed on the other of the turntable and the base to be engageable with the positioning engaging assembly.

Abstract: A diaphragm for a brake booster having an annular inner bead with first and second radial surfaces separated by an apex. The second radial surface has a plurality of indentations that extend from the apex. In response to a positive pressure differential created by vacuum in a first chamber and air in a second chamber, an output force is developed to effect a brake application corresponding to an input force. This positive pressure differential act on the annular bead to urge said first radial face into engagement with a wall to prevent communication between the first and second chambers during a brake application. In the absence of the presence of vacuum in the first chamber, the input force acts on the wall to develop an operational pressure in the first chamber to develop a negative pressure differential between the first and second chambers.

Abstract: A pneumatic operated fastener driving device having a trigger valve and an improved main valve with a flexible membrane that controls the flow of compressed air to and from the cylinder. The flexible membrane maintains the main valve close no matter when the tool is connected or disconnect to an air supply line. Further, the main valve including the flexible membrane are designed and constructed to undergo a high number of tool cycles to provide long wear and low maintenance.

Abstract: A swashplate leveling device has a reciprocative leveling follower movable along a fixed axial pin. The cam is biased into engagement with a swashplate of an axial piston variable displacement hydraulic unit to position the swashplate in a zero displacement orientation when there is no control input to the hydraulic unit. The leveling device has a pair of contact points, one positioned on each side of the swashplate tilt axis in a manner that both contact points engage the swashplate when it is leveled to its zero displacement orientation.

Abstract: This invention relates to a work cylinder having damping stops for limiting movement of the piston within the cylinder, the cylinder having cylinder covers for closing the ends of the cylinder, whereby the damping stops are positioned and retained substantially between the cylinder covers and the cylinder walls when the cylinder covers are fastened to the cylinder.

Abstract: A working cylinder which operates without a piston rod, comprising a cylinder tube, a piston which is displaceable therein and is provided with a pulling means, and a force transmission element which is connected with the pulling means and guided in axial displacement on the cylinder tube. In order to minimize the mounting work for the external attachment of the pulling means and at the same time increase the dependability of operation, the pulling means (1) is provided on the ends thereof connected to the force transmission element (2) with clamping pieces (3) which are provided with a toothed surface (5) on at least one outer side (4) and the force transmission element (2) is provided with a correspondingly toothed surface (6) against which the side (4) of the corresponding clamping piece (3) having the toothed surface (5) can be pressed via a pressing element (7). The corresponding toothed surface of the force transmission element (2) is longer than the clamping pieces (3) to allow for adjustment.