73results about How to "Reduce tightening force" patented technology

A fitting space having an annular opening, in which an elastic ring whose diameter of a section is D is to be fitted, is formed between a pin-press-fit hole of a link and an exposed end portion of a pin. A link inner wall face and a pin outer peripheral face in the fitting space are formed with tapered faces whose diameters decrease as they go toward an inmost of the fitting space at angles alpha and beta (alpha>beta) with respect to the axial line of the pin, respectively. The elastic ring contacts with the respective tapered faces in the fitting space at the angles alpha and beta with respect to a perpendicular passing a center of its section. Dimensions d1 and d2 between contact points at the respective tapered faces and a horizontal line passing the center of the section of the elastic ring, the diameter D of the section of the elastic ring, and the angles alpha and beta have a relation of alpha>beta, D>d1+d2 (where d1=D / 2.cos alpha, d2=D / 2.cos beta). Therefore, the links and the pin can be connected to each other securely and firmly with a sufficient holding force to the pin in the axial direction. Thus, assembly of the links and the pin can be carried out easily at a low cost.

A mobile phone is provided. The mobile phone includes a first case, a frame defining a space for elements of the mobile phone, the frame together with the first case dividing the space into a plurality of chambers, and a seal interposed between the frame and the first case for independently sealing more than one of the plurality of chambers.

A resin composite fuel hose of a multilayer construction includes a resin layer as a barrier layer having a fuel permeation resistance, an inner rubber layer as an inner surface layer laminated on an inner side of the resin layer and an outer rubber layer laminated on an outer side of the resin layer. The outer rubber layer has a rubber hardness degree equal to or greater than that of the inner rubber layer, and the inner rubber layer has a permanent elongation equal to or less than 90%.

A connector casing E required to have a sealing property includes a cover 2. The cover 2 has a cover main body 10 provided with a large vent hole H0 passing through the connector casing E in an inward and outward direction and having a predetermined inner diameter size. A permeable sheet S, which permits permeation of a gas and prevents permeation of a liquid and a solid, is integrally joined to an outside peripheral part of the large vent hole H0 so as to cover the large vent hole H0 from its outside. A cover insert member C is disposed outside the permeable sheet S to cover the permeable sheet from the outside, and a ring-shaped protrusion 22 is hermetically joined to the casing main body 10. The cover insert member C1 is provided with a small vent hole H1 which has an inner diameter smaller than the large vent hole H0 and communicates with the large vent hole H0 through the permeable sheet S.

A suture sleeve for securing a medical implantable lead in position in relation to a human or animal body, has a tubular body of a resilient material defining a through bore in the longitudinal direction of the suture sleeve and being formed with one or more longitudinal spaced, circumferential suture grooves on the outside and two or more grip enhancing projections around the inner circumference of the through bore in at least an area radially inward of a suture groove. The suture sleeve is formed with two or more stiffening protuberances in the bottom along the circumference of the suture groove such that the bottom of the suture groove deviates from circular as seen in cross section. The, stiffening protuberances are positioned radially outside of the respective grip enhancing projections on the inside. A method for manufacturing such a suture sleeve is also described.

A resin composite fuel hose of a multilayer construction includes a resin layer as a barrier layer having a fuel permeation resistance, an inner rubber layer as an inner surface layer laminated on an inner side of the resin layer and an outer rubber layer laminated on an outer side of the resin layer. The outer rubber layer has a rubber hardness degree equal to or greater than that of the inner rubber layer, and the inner rubber layer has a permanent elongation equal to or less than 90%.

Internally threaded device 10 includes a main body 11 having an internal thread portion 13 and a ring-like seat portion 12 disposed between the main body 11 and a member to be fastened 30. The main body 11 has a convex portion 15 and the ring-like seat portion 12 has a concave portion 16, the convex portion 15 and the concave portion 16 have a spherical zone with a center on an axis line. The radius of the spherical shape is set to allow the convex portion 15 and the concave portion 16 to slide earlier than the internal thread portion 13 when a load is applied between the main part 11 and the member 30 in a direction crossing the axial line L. Externally threaded device 40 and washer device 50 in similar structures prevent loosening of the engaged portion easily.

Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.

A mounting feature for a cable tie is provided in which the mounting feature has at least one divided retention component. The center-most edges of the at least one divided retention component contact a mating article on the edge of the mating article, such as the threaded portion, decreasing the amount of fastening force required to affix the mounting feature of the cable tie to a mating article while not compromising the optimal amount of required extraction force. A method for affixing the mounting feature to a mating article is also provided.

An attachment structure for a pressure detector that is such that the pressure detector is attached in an airtight manner within an insertion hole of an attachment tool main body attached to a mechanical device or pipelines, with a pipe, a gasket presser, a gasket, a split ring, and a bonnet. The configuration is such that the gasket presser and the split ring are inserted into the insertion hole of the attachment tool main body, the bonnet is inserted into the insertion hole, the bonnet is fastened to the attachment tool main body side, the gasket presser and the gasket are pressed by the split ring, and sealing portions are formed between the bottom surface of the insertion hole and one end surface of the gasket and between the tip end surface of the gasket restraint and the other end surface of the gasket.

The object of the present invention is to suppress the generation of abnormal noise from a transmission system that occurs when a vehicle is turning. A front wheel output shaft is directly linked with the transmission system, and a rear wheel output shaft is linked to the transmission system via a transfer clutch. When the front wheel output shaft rpm Nf and the rear wheel output shaft rpm Nr separate from each other beyond a specified value (α2) while turning a corner, and then the accelerator pedal is released and the engine rpm Ne and turbine rpm Nt approach each other beyond a specified value (β2), and then if vibration at a specified vibration frequency appears in the front wheel output shaft rpm Nf (γ2), the duty ratio Rd of the clutch pressure control valve 52 is decreased (δ2). Next, as the duty ratio Rd decreases, when it is determined that vibration in the front wheel output shaft rpm Nf has been eliminated (ε2), normal slip control is restored, and control is performed so that the duty ratio Rd is increased again (ζ2). By doing this, it is possible to suppress vibration of the front wheel output shaft, and thus suppress the generation of abnormal noise from the transmission system.

An attachment structure for a pressure detector that is such that the pressure detector is attached in an airtight manner within an insertion hole of an attachment tool main body attached to a mechanical device or pipelines, with a pipe, a gasket presser, a gasket, a split ring, and a bonnet. The configuration is such that the gasket presser and the split ring are inserted into the insertion hole of the attachment tool main body, the bonnet is inserted into the insertion hole, the bonnet is fastened to the attachment tool main body side, the gasket presser and the gasket are pressed by the split ring, and sealing portions are formed between the bottom surface of the insertion hole and one end surface of the gasket and between the tip end surface of the gasket restraint and the other end surface of the gasket.

The invention discloses a circumcision device. The circumcision device includes a fastening device and a glans ferrule, wherein: the fastening device has an opening, and the two ends of the opening are provided with mutually corresponding upper half knife-edge joints At the joint with the lower half of the knife edge, the edges of the joint of the upper half of the knife edge and the joint of the lower half of the knife edge are provided with rounded corners. Because the joint of the two halves of the fixed ring of the existing circumcision device is a right-angle structure, when the two halves are combined to tighten the penis, the joint of the two halves of the circumcision can easily clamp the foreskin, which makes the patient very painful. The rounded structure of the present invention can avoid clamping the foreskin during the operation, make the operation more smoothly, and avoid the pain of the patient.

A handle switch wherein chattering after mounting of the handle switch to a handlebar can be restrained while maintaining assembleability of switch cases of bisection structure. The handle switch includes a first case and a second case of bisection structure formed with clamp surfaces making contact with the outer circumference of the handlebar of a motorcycle, the first case and the second case being coupled together, with the handlebar clamped between the clamp surfaces, to thereby fix the handle switch to the handlebar. At least one of the clamp surface formed in the first case and the clamp surface formed in the second case is formed with a rib serving as a fastening allowance in coupling the first case and the second case together. The width B of the rib is set to be smaller than the width A of the clamp surfaces.

The present invention aims to provide a gasket which reduces the clamping force required to fit a plunger rod into the gasket, while maintaining a tight fit therebetween. The present invention relates to a medical gasket including a female screw portion to fit a plunger, on the side opposite to a drug contact surface, the female screw portion having roots or crests which gradually increase in diameter from the drug contact surface side toward the opposite plunger side.

The present invention provides a metal gasket to be fitted between a cylinder head and a cylinder block to seal a gap between the surfaces thereof, which comprises: a thin metal plate with an opening formed at a position corresponding to a bore portion of the cylinder block, the opening having a diameter larger than that of the bore portion; and a pair of elastic metal substrates each having: an opening which substantially agrees with the bore portion of the cylinder block; an annular convex portion formed concentrically with the opening at a position apart from an edge portion of the opening by a specified distance; and an annular holding portion for holding a peripheral portion of the opening of the thin metal plate, horizontally extending out from an outer edge portion of the convex portion, wherein the pair of the elastic metal substrates are disposed so that top portions of the respective convex portions face each other and that the holding portions overlap with the thin metal plate, and engaged to the thin metal plate at a plurality of positions.

The invention discloses a change tool for an ultra-high-voltage strain insulator string. The change tool comprises a hanging board connecting fitting, a yoke plate clamping fitting, a pulley assembly and a tightener, wherein the hanging board connecting fitting is used for connecting two strain regulating hanging board mounted on a tower body, the yoke plate clamping fitting is clamped on a strain yoke plate mounted on a circuit, the pulley assembly is connected between the hanging board connecting fitting and the yoke plate clamping fitting, and the tightener provides tightening force for the pulley assembly. The invention further discloses a change technology for the ultra-high-voltage strain insulator string. The technology comprises the following steps: connecting the two strain regulating hanging board mounted on the tower body by the hanging board connecting fitting to provide a first pivot; clamping the yoke plate clamping fitting on the strain yoke plate mounted on the circuit to provide a second pivot; mounting the pulley assembly between the first pivot and the second pivot through the tightener and a rope so as to reduce tightening force. The change tool and the change technology are suitable for changing the insulator string.

A flexible section (56) is provided between a small-diameter tube section (32) and a bellows section (42) of a boot (28) for a joint, and the flexible section (56) has a greater flexibility than the small-diameter tube section (32). When a spline shaft (24) is displaced so as to incline relative to a constant velocity joint (3), deformation stress acting in the boot (28) is relaxed by allowing the flexible section (56) to deflect (bend). This inhibits the inner wall surface of the small-diameter tube section (32) from separating from the sidewall surface of the spline shaft (24).

Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.