Abstract: An adjustable damping force hydraulic shock absorber includes a cylinder, a piston slidably disposed in the cylinder, two partitioned chambers communicating with each through a plurality of passages, a damping force generating mechanism for generating a damping force by controlling a flow of hydraulic fluid through the passages, and a valve for adjusting the damping force by selectively opening and closing one of the passages. The shock absorber is set in a hard mode where a relatively large damping force is generated when the one passage is closed and is set in a soft mode where a relatively small damping force is generated when the one passage is open. The valve includes a valve body axially movable to seat on and to be raised from a valve seat formed in the one passage, a spring for biasing the valve body away from the valve seat, a plunger of magnetic material connected to the valve body at one end thereof, and a solenoid into which the plunger is inserted.

Abstract: A multistage compressor includes a lower pressure side compression part, a higher pressure side compression part, an intermediate conduit placing the lower and higher side compression parts in communication, and a cooler disposed midway of the intermediate conduit for allowing gas to flow from the lower pressure side compression part to the higher pressure side compression part and for cooling the flowing gas. The cooler includes a drain outlet port. The compressor further includes an electromagnetic valve disposed at the drain outlet port and a controller for controlling the valve. The valve is opened when the compressor is started or re-started after a pause, is kept open during a predetermined period of time, and is then closed.

Abstract: This invention relates to an apparatus: to determine the concentration of vehicular fuel vapor contained in a fuel tank of a vehicle; to examine the difference between the measured fuel vapor concentration and an internal reference standard based on the concentration of ambient vapors; to issue a warning to report an abnormality in the system if an unusual deviation, from the predetermined allowable range of differences, is detected therein; and to shut off the fuelling operation until the cause of the abnormality has been rectified.

Abstract: An air compressor comprises a cylinder, a suction valve body operatively combined with the cylinder, wherein the suction valve body is in a form of a band plate having a shape of V-letter with a round bottom, both ends of the suction valve body being arranged outside a projection space of the cylinder and a portion of the suction valve body other than the both ends being arranged inside the projection space of the cylinder, and wherein the air compressor comprises a suction valve plate receptor which can overlap the suction valve body when the suction valve body is in suction stroke and which has a rigidity enough to restrict an amount of lift of the suction valve body.

Abstract: A disc brake for use in a vehicle, such as an automobile, includes a carrier, a rotating disc having inner and outer braking surfaces, inner and outer pads, and a caliper supported in a floating condition by the carrier. The caliper has a cylinder member housing a piston for forcing the inner pad against the inner braking surface of the disc, and a claw member having a disc-passing portion straddling the disc and a claw portion for abutting against the outer pad. The cylinder member defines a through-hole extending therethrough in the axial direction of the disc. The disc-passing portion has an inner surface facing the disc and a tapped hole. A bolt member of the caliper secures the cylinder and claw members together. The tapped portion of the tapped hole is formed such that the end of the tapped portion which is remote from the cylinder member is located on the side of the cylinder member with respect to the inner braking surface.

Abstract: A scroll type fluid apparatus includes a casing having a flange member defining an annular recess therein, a drive shaft journalled on the casing and having a crank shaft formed at an inner end of the drive shaft extending in the casing, an orbiting scroll member rotatably mounted on the crank shaft and having a mirror-finished plate and a scroll wrap extending upright on the plate, a stationary scroll member mounted on the casing and including a mirror-finished plate having scroll wrap extending upright thereon and engaged with the scroll wrap of the orbiting scroll member, a suction port communicating with the interior of the annular recess of the annular flange member, a discharge port, and a sealing member disposed in the annular recess of the annular flange member for sealing a compression chamber within the annular recess from the interior of a body of the casing.

Abstract: A position detection device applicable to robots and other equipment used in automated assembly line manufacturing processes is disclosed. The device of the present invention provides a position detection device having a simplified construction which can rapidly and accurately establish the orientation and location of workpieces within a work space, and which is suitable for workpieces having at least two straight line edges which are not parallel with respect to one another.

Abstract: A scroll type fluid apparatus, such as a scroll vacuum pump or a scroll compressor, does not require lubrication by an external lubricating device. The scroll type fluid apparatus includes a casing, a stationary scroll member fixed to the casing, an orbiting scroll member cooperating with the stationary scroll member to form sealed chambers therebetween, and a restraining mechanism for restraining the orbiting scroll member from rotating about its own axis. The restraining mechanism employs prelubricated sealed bearings which support its component parts so that the component parts are in rolling contact with the corresponding portions of the orbiting scroll member, so that the component parts and the corresponding portions of the orbiting scroll member are not radially abraded, and portions of the scroll type fluid apparatus exposed to the fluid need not be lubricated by an external lubricating device.

Abstract: A turbine flowmeter includes an impeller rotatably provided within a flow passage through which a fluid to be measured flows and comprising a rotary shaft which rotates together with the impeller, a pair of bearing part having bearing surfaces for axially supporting the rotary shaft, a holding part for holding the bearing part and provided on the flow passage, an oil accumulating space defined by an end portion of the rotary shaft and bearing surfaces facing respective sides of the end portion, an oil accumulating part provided on the holding part and filled with the lubricating oil to be supplied to the oil accumulating space, an oil supplying part for supplying oil to the oil accumulating space which part comprises a capillary part connected on one end direct to the oil accumulating part and communicated on the other end to the space, wherein the lubricating oil is supplied to the space via the oil supplying part from the oil accumulating part by capillarity introduced in the oil accumulating part and the s

Abstract: A disc brake prevents the generation of brake noise by chamfering a pair of friction pads which are disposed at both sides, respectively, of a rotating disc. Each pad includes a backing plate and a lining that is rigidly secured to the backing plate, the lining having a friction surface that is to be pressed against the disc. Both side portions of the lining extend outwardly beyond the outer side surfaces of the corresponding claw portions of a caliper in the widthwise direction. The lining is chamfered at each side portion from a position whose distance from the outer side surface of the corresponding claw portion is in the range of from one third to one fourth of the width of the claw portion.

Abstract: A drum brake includes a pair of brake shoes which are provided such that when expanded, they are forced against a brake drum to generate a braking force, a strut which is received in notches formed in the respective webs of the brake shoes so as to extend therebetween, a parking lever which is rotatably supported on either one of the brake shoes such that when rotated, it engages the strut to expand the brake shoes, and a coil spring which is loaded between the strut and the notch formed in the web of the other brake shoe to bias the strut toward the first brake shoe. The notch in the web that is engaged with the strut includes a first notch portion that is formed by cutting the outer peripheral portion of the web and a second notch portion that is formed by further cutting the web at the bottom of the first notch portion at the approximately central portion thereof in the direction of the width of the notch.

Abstract: Important performances of a robot of articulated type include a wide range of operation and an easy maintenance. In order to improve the performances, it is extremely advantageous to arrange an arm in a cantilever manner, in a point where components are difficult to interfere with each other, a point where confined portions of joints are brought to a single location, and so on. Conventionally, however, the following various drawbacks occur. That is, if the arm is arranged in a cantilever manner, moment loads applied to a plurality of bearings forming respectively the rotational joints increase, and an offset occurs between axes of the respective rotational joints so that computation for control becomes complicated. For this reason, the conventional robot, in which the arm is arranged in a cantilever manner, deteriorates in performance as compared with a robot in which an arm is arranged in a straddle manner, in a service life of the robot, easiness in computation of a control device, and so on.

Abstract: A friction pad for use in a disc brake includes a backing plate and a lining member secured to the front surface of the backing plate. The backing plate includes a cavity formed in the front surface of the backing plate for receiving therein a portion of the lining member, and a protrusion on the back surface of the backing plate located at a position corresponding to the cavity and projecting outwardly from the back surface of the backing plate. The cavity includes a first recess formed in the front surface of the backing plate in a depressed manner and defined by a side wall, and a second recess formed at the bottom wall of the first recess and defined by a side wall. The bottom of the side wall defining the first recess and the side wall of the second recess are interconnected by a convex surface protruding into the cavity.

Abstract: A conveyor has a pair of conveyor rails and a conveyor belt supported on and guided by the conveyor rails. At least one of the conveyor rails includes an upper surface and opposite side surfaces. The at least one conveyor rail further includes a guide portion for guiding an outer side edge and the lower surface of at least a work conveying portion of the conveyor belt on which workpieces are supported to be conveyed. The upper surface and at least one of the side surfaces of at least one conveyor rail are provided with respective longitudinal T-grooves formed therein, extending along the length of the conveyor rail and having a cross section resembling the letter T.

Abstract: In the present invention, the conditions necessary for the change from the reducing-pressure mode to the holding pressure mode are changed based on the length of the period of instability from the beginning of wheel slippage to the stopping of this slippage, and the length of the period of continued severe locking in which the slip ratio of the wheel exceeds a certain fixed value. Therefore, even when there is a disturbance in the form of roughnesses in the road surface or the like, this is determined to be a temporary phenomenon and the switching of the setting from the reducing-pressure mode to the holding pressure mode can take place in a reliable manner, and the usual, stable braking power can be achieved in correspondence with the relationship between the road surface and the tires.

Abstract: A disc brake includes a rotating disc, a friction pad having a backing plate and a lining fixedly attached to one surface of the backing plate, and a wear sensor for sensing a limit of wear of the lining. The wear sensor is a bent elongate metal plate mounted on the backing plate with one end thereof projecting beyond the front surface of the backing plate. The disc brake is further provided with structure for preventing excessive deflection of the sensor.

Abstract: A pneumatic booster for use, for example, in a brake system of a vehicle, and designed so that the overall axial length is reduced without interfering with the operation thereof. The booster comprises a valve body which is movable back and forth between first and second positions in a housing that is divided by a diaphragm with a power piston into front and rear chambers communicated with respective pressure sources, a valve which allows at least one of the front and rear chambers to selectively communicate with the pressure sources which differ from each other in the level of pressure, and a guide which slidably fits on the outer periphery of the valve body. The valve body has a passage one end of which opens on the outer periphery thereof to connect one of the front and rear chambers to the associated pressure source, the opening of the passage being positioned in the axial direction of the valve body so that the guide overlaps the opening when the valve body is at either the first or second position.

Abstract: A suspension system includes a shock absorber body, a piston rod that projects upwardly from the upper end of the shock absorber body, and a mount that is provided on the projecting end portion of the piston rod to attach the projecting end portion to a vehicle body. The mount includes a first mounting member that is attached to the piston rod, a second mounting member that is attached to the vehicle body, and a rubber mount member that is provided between the first and second mounting members. The rubber mount member has a pair of thick- and thin-walled diametrically opposing portions. The suspension system further includes engagement members to which a retainer is disengageably attached to retain the thick-walled portion of the rubber mount member in a compressed state.

Abstract: A drum brake including a backing plate adapted to be mounted on a non-rotatable member of a vehicle, the backing plate having a shaft hole formed therethrough at the center thereof for accommodating a shaft of the vehicle, a drum adapted to be mounted on a rotatable member of the vehicle, a pair of brake shoes mounted on the backing plate and arranged to be expandable in the radial direction of the drum, a connector connecting respective ends of each of the brake shoes together, an anchor with which the other end of each of the brake shoes are engageable, and mounting bolts for mounting the backing plate on the non-rotatable member of the vehicle. The mounting bolts are located outwardly of the shaft hole and close to each other. The anchor is also fixed to the non-rotatable member of the vehicle by the mounting bolts.

Abstract: A magnetic disk storage device includes a magnetic disk having an annular data area for recording data, a drive for rotating the magnetic disk about the axis of the magnetic disk, a magnetic head for reading and writing data to and from the data area of the magnetic disk, and a transfer motor for moving the magnetic head when actuated. The magnetic disk further comprises an urging member and a locking member. The urging member forces the magnetic head, so as to move the magnetic head outside the data area. The locking member prevents the urging member from jarring the magnetic head when the transfer motor is actuated.