Abstract: To prevent an erroneous operation of a buzzer upon fall of a source voltage, a buzzer driving device connectable with a direct current source (1) comprises a charging/discharging circuit (3) which is connected with the direct-current source (1) via a switch (2) and performs the charging and discharging at a predetermined time constant (CR) when the switch (2) is turned on and off, respectively, a hysteresis circuit (25) to which an output voltage of the charging/discharging circuit (3) is input and which operates until the output voltage rises to or above an operation threshold value (V.sub.T) after the start of the charging of the charging/discharging circuit (3) and thereafter remains inoperative unless the output voltage falls to or below a stop threshold value (V.sub.S) which is smaller than the operation threshold value (V.sub.

Abstract: A compact pair of electrical connectors are provided with a cover that os automatically openable. The connectors include housings (1, 21). When the connection of the housings (1, 21) is started, a pushed-up portion (61) is moved along a guide surface (65) of a push-up plate (64), thereby gradually opening a cover (51), and then is moved onto a lock arm (15). The lock arm (15) is elastically deformed upward by lock projections (17) moving onto locking projections (46) and the cover (51) is further opened according to this elastic deformation. When the lock arm (15) is elastically deformed to its maximum degree, a push-in portion (16) is lifted to a position immediately before upper beams (18A) of a jam preventing frame (18) and the pushed-up portion (61) is moved upward along tapered surfaces (68) of the upper beams (18A), moving over the upper beams (18A).

Abstract: A connector is provided to prevent gelatinous seal members from being adhered to terminal fittings and improve the insertion operability of the terminal fittings. The connector includes a housing 11 with a rear surface that is held watertight since clearances between a cover 23 and the housing 11 and between the cover 23 and wires 15 are sealed by gelatinous seal members 40. Thus, female terminal fittings 14 are not brought into contact with the gelatinous seal members 40 while being inserted. Therefore, there is no likelihood that the gelatinous seal members 40 are adhered to the female terminal fittings 40 and that the viscosity resistance thereof acts on the female terminal fittings 14.

Abstract: A temporomandibular joint prosthesis is provided. The prosthesis includes the condyle component for attachment to the ramus of a temporomandibular joint to replace the natural condylar head. The condyle component is attached to the natural ramus by a fixation system that may include plasma-sprayed pegs or plasma-sprayed double screws. The prosthesis further includes a fossa component assembly having a metallic bone attachment member and a plastic bearing. The plastic bearing is disposed and configured for articular bearing engagement with the condyle component of the prosthesis.

Abstract: A construction is provided for preventing an erroneous assembly of a connector housing and a cover. The construction includes a pair of locking portions (8) that project at the top and bottom of each of left and right side portions of a two-contact connector (1). On the other hand, cover-side projections (35, 36) project from upper and lower walls of a five-contact cover (32). If the connector housing (1) is inserted into a mount opening (34) of the cover (32), the locking portions (8) shown at the shown right side come into contact with the cover-side projections (35, 36) of the cover (32). Thus, even if an attempt is made to forcibly insert the connector housing (1) into the cover (32), this cannot be done by the mutual interference of the locking portions (8) and the projections (35, 36). In this way, an error assembling of the connector housing (1) and the cover (32) can be prevented.

Abstract: To prevent deformation of lock portions and make a block connector smaller a dovetail-shaped lock groove 21 is formed at a front end of the upper surface of the lower housing 2 over the entire width, and a dovetail-shaped lock rib 22 which can be pressed into the lock groove 21 is formed on the lower surface of the upper housing 1. The lock rib 22 is divided into three divided ribs with clearances therebetween, and the projecting heights of the divided ribs differ. The lock groove 21 is formed to have a stepped shape. Recesses 32 which form jig insertion holes are so formed as to conform to the clearances of the lock rib 22. A rear locking mechanism is such that lock projections 30 are fitted into lock holes 29, and is relatively easily unlockable by rotating the front end of the upper housing 1.

Abstract: An inspection equipment is provided by which the endodontic file is examined and judged as to if it reaches to its critical strength. When an appropriately selected endodontic file out of the endodontic files 11, 12, 13 in the kit case 1 is set at the file sample holding portion 5 in the kit case 1 and data corresponding to the endodontic file is input from the data input portion 22, the electric resistance value on the file portion of the endodontic file measured by the resistance measuring portion 20 and the resistance value on the critical strength with correspondence to the data on the file read-out from the RAM 23 are brought together and compared by the inspection unit 30. If the calculating judgement portion 25 makes a judgement to the file to reach its critical level of strength in the cumulative damage, the alarm 19 issues an alarm sound, so that an endodontist or dental assistant knows that the file is not usable any more and should be discarded.

Abstract: A temperature sensitive fluid type fan coupling apparatus is provided which can prevent "an accompanying rotation" phenomenon from being generated so as to reduce fan sound and improve fuel consumption. The fan coupling apparatus comprises a sealing device box including a cover and a case which is separated into an oil reserving chamber and a torque transmission chamber by a partition plate. A drive disc is fixed to a rotary shaft body and is disposed inside the torque transmission chamber to support the sealing device box. A circulating flow passage delivers oil from the torque transmission chamber to the oil reserving chamber. A valve member for opening and closing a supply hole communicating between the torque transmission chamber and the oil reserving chamber is provided so as to increase and reduce an effective contact area for the oil in the drive disc and torque transmission gap portion, thereby controlling a torque transmission to the side of the sealing device box driven by the rotary shaft body.

Abstract: A common rail includes a generally cylindrical peripheral wall having a communication passage extending axially therethrough. At least one branch hole extends through the peripheral wall and is aligned perpendicular to the axis of the common rail. The intersection of the branch hole with the outer surface of the main pipe rail defines an outwardly flared pressure receiving seat for receiving the connection head portion of a branch pipe. A sleeve nipple is welded or brazed to the outer surface of the main pipe rail and surrounds the branch hole. Inner surface regions of the peripheral wall surrounding the branch hole have a compression residual stress imparted thereto. The creation of the compression residual stress may cause a portion of the inner surface of the main pipe rail surrounding the branch hole to assume a non-cylindrical configuration.

Abstract: A horizontal plane frictional coefficient testing apparatus and methods are provided which include a substantially horizontal planar platen having two spaced, parallel movable rails. The rails are actuated by a motor adapted for reversibly raising and lowering the rails relative to the platen. A sled of predetermined weight is also provided having a central body and two pairs of outwardly extending axles, with each pair of axles being of equal length and formed with a wheel at the end thereof. The wheels of the sled are formed for engagement with the rails and engagement of the wheels with the rails locates the sled generally parallel to the rails. In operation, a sample of sheet material is fixed to the sled and the sled is placed on the rails, with the rails being in a raised position. Subsequently, the rails are lowered to gently place the sled onto the platen or a test medium fixed to the platen.

Abstract: A busbar 24 and a printed circuit board 23 having electronic devices mounted thereon are provided as internal circuits in a casing of an electrical connection box. Terminals 24a provided in the busbar 24 are inserted through the printed circuit board 23 to be secured to a conductive portion by solder 30 for a direct electrical connection.

Abstract: A horizontal plane frictional coefficient testing apparatus and methods are provided which include a substantially horizontal planar platen having two spaced, parallel movable rails. The rails are actuated by a motor adapted for reversibly raising and lowering the rails relative to the platen. A sled of predetermined weight is also provided having a central body and two pairs of outwardly extending axles, with each pair of axles being of equal length and formed with a wheel at the end thereof. The wheels of the sled are formed for engagement with the rails and engagement of the wheels with the rails locates the sled generally parallel to the rails. In operation, a sample of sheet material is fixed to the sled and the sled is placed on the rails, with the rails being in a raised position. Subsequently, the rails are lowered to gently place the sled onto the platen or a test medium fixed to the platen.

Abstract: A connector is provided to ensure the strength of a tubular engaging portion and to prevent a breakage of a locking portion during connection with a mating connector. The connector includes a terminal fitting 20 that is inserted to a proper position in a tubular engaging portion 11 of a housing. Locking portions 33 are formed on the outer surfaces of the terminal fitting 20 and are engaged with lock recesses 18 formed in the inner surfaces of the engaging portion 11. As a result the terminal fitting 20 is held so as not to come out. The locking recesses 18 are formed by recessing small portions of the inner surfaces of the engaging portion 11 sufficient to be engaged with the leading ends of the locking portions 33 and, accordingly, do not bring about a reduction in the strength of the engaging portion 11.

Abstract: A molded coil is provided for preventing the entrance of water, oil and the like into the inside a coil. The molded coil 1 is comprised of a coil 2 provided therein and having the outer surfaces thereof covered by a resin material, and a molded element 17 formed by curing the resin material. Bulging portions 6 are provided at the opposite ends of a shaft 5 of a bobbin 3 of the coil 2. The molded element 17 is so formed as to cover the coil 2 from the outer surfaces of the two bulging portions 6 over the outer circumferential surface of the wound wire 4. On the outer surface of the lower bulging portion 6 is provided an embossed engaging portion in the form of a closed ring along the entire circumference of the bulging portion 6. Thus, even if water, oil or the like enters through mold detaching holes 18, it will not reach the inside of the coil 2.

Abstract: A modular truss shoring system for forming concrete barriers in situ has truss members formed of upper and lower chord members are connected by diagonal struts. The struts being adjustable between chords to thereby allow for variation of height between the upper and lower chord. Tube truss legs are attached to and extend between the upper and lower chord with extension legs passing through the tube truss legs. The extension legs being adjustable with respect to the tube truss legs so as to allow for overall height adjustment of the truss members. Screw jacks are provided at the base of the extension legs allowing for adjustment of the truss members elevation with respect to a bearing surface. Cross bracing members are provided between adjacent truss members to stabilize the truss shoring system.

Abstract: A connecting structure of an externally resin-coated small-diameter metallic pipe having an excellent corrosion-resistant property with respect to a mating member is provided. According to the present invention, a resin-uncovered portion of the metallic pipe provided for applying an end processing thereon is completely covered with a protective pipe made of a resin material so that the processed pipe can be connected with the mating member without spoiling its anti-chipping property and an anti-splashing property of the metallic pipe over the entire length thereof. With the exception of the end of the metallic pipe corresponding to the margin at least required for applying an end processing on the pipe, the pipe is covered with an extrusion-moldable thick film-like resin and is connected with a mating member by means of a clamp nut assembled to the pipe end so as to be screw-fitted with the mating member.

Abstract: A connector is provided with a retainer which can prevent a retainer insertion hole from being exposed to the outside and which has a strong force for retaining terminal fittings. The retainer includes a pair of insertion portions 41, 42 having different lengths extend in parallel from a base portion 43 of a retainer 40, and tapered surfaces 32, 33 for guiding the respective insertion portions 41, 42 in a direction oblique to the insertion direction of terminal fittings 20 are provided at the back of a pair of insertion holes 30, 31 formed in a housing 10 in conformity with the insertion portions 41, 42. When the retainer 40 is guided in the oblique direction, lock projections 45 provided on the retainer 40 directly lock the terminal fittings 20. Since the terminal fittings 20 are directly locked by the retainer 40 in this connector, they can be retained with a strong force.