74results about How to "Appropriate force" patented technology

The flow of hydraulic fluid induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, thereby generating damping force. By thrust from a solenoid actuator, the valve-opening pressure of the pilot valve is controlled, and the pressure in a pilot chamber is also controlled to control the valve-opening pressure of the main valve. When there is a failure, a valve body of the pilot valve is retracted to abut against a fail-safe disk by spring force of a valve spring. Thus, damping force is generated by the fail-safe disk at the downstream side of the pilot valve, and the valve-opening pressure of the main valve is also controlled by the fail-safe disk to obtain an appropriate damping force.

The present invention provides a grease composition for automobile wheel hub bearings and its preparation method; the grease composition includes 84-89% of base oil, 10-54% of a thickener, 0.5% of an antioxidant and 0.5% of a tackifier; and 0.03% of a metal deactivator which is calculated by taking the total amount of the above components as 100%, is added. According to the grease composition and its preparation method, by adjusting the grease formulation and process, an optimum complex soap fiber structure is obtained, so that the shape and size of soap fiber and acting force among the soap fiber are proper, the grease has good capability to control the bearing temperature rise, the grease has the advantages of excellent high temperature loss resistance, good metal surface adhesion, lubrication and seal performances and the like, and also has good capability to control the temperature rise, the high temperature softening loss and early lubrication failure problems caused by the design and use characteristics can be alleviated, and the grease has the multi-effect and general characteristics of common complex soap base greases, and can better meet the requirements of the automotive wheel hub bearings on lubrication.

An assist grip of the present invention includes a grip body provided at both side base portions thereof with hinge recess portions and a hinge portion rotatably and pivotally supported in each of the hinge recess portions of both sides, and is fixed via the hinge portion to a to-be-fixed portion in an automobile. In a pivot support portion of the hinge portion, an outer support piece and an inner support piece are provided at a distance from each other, and between the inner support piece and the outer support piece, a torsion coil spring stored in a spring case is inserted. One end portion of the torsion coil spring is locked to an inside of the spring case, and the other end portion of the torsion coil spring projects from the spring case and is locked to a part of the grip body.

A damper for a washing machine includes: a cylinder; a piston body having one end inserted into the cylinder; a first friction member interposed in a contact surface between the piston body and the cylinder; an extension bar extended from an inserted portion of the piston body, the extension bar having a circumferential stopper at the extended portion; a friction ring formed between the circumferential stopper and the first friction member; and a second friction member formed on an outer circumferential surface of the friction ring to contact with an inner surface of the cylinder.

A shock absorber includes a cylinder, a piston, and a piston rod. The piston includes a first valve and a second valve. The first valve includes a first leaf valve, a first valve seat portion, a second valve seat portion, and a first oil passage. The second valve includes a second leaf valve and a second oil passage. The first valve and the second valve are arranged in series.

The invention discloses an organic rare earth europium luminescent polypropylene (PP) fiber and a preparation method thereof. The rare earth europium complex Eu(TTA)3DmPPhen luminescent material close to nanoscale is prepared by firstly preparing a phenanthroline neutral ligand and carrying out coordination on the phenanthroline neutral ligand and rare earth Eu (III) in combination with alpha-thenoyltrifluoroacetone and adopting a method of firstly carrying out titration under atmospheric pressure and secondly carrying out reaction under high pressure. The material emits strong pure red light at 615nm in a 10-5mol/L CH2Cl2 solution. The luminescent fiber is prepared by adopting the complex as a luminescent material and carrying out compound melt spinning on the complex and PP. When the content of the rare earth luminescent material in the fiber is 0.05%, the fiber emits stronger pure red light in a 10-5mol/L dimethyl formamide (DMF) solution and the luminescent position is still at 615nm. The luminescent fiber has the advantages of high color purity and better spinnability.

The invention discloses organic rare earth europium luminescent nylon and a preparation method thereof. The rare earth europium complex Eu(TTA)3DmPPhen luminescent material close to nanoscale is prepared by firstly preparing a phenanthroline neutral ligand and carrying out coordination on the phenanthroline neutral ligand and rare earth Eu (III) in combination with alpha-thenoyltrifluoroacetone and adopting a method of firstly carrying out titration under atmospheric pressure and secondly carrying out reaction under high pressure. The material emits strong pure red light at 615nm in a 10-5mol/L CH2Cl2 solution. The luminescent fiber is prepared by adopting the complex as a luminescent material and carrying out compound melt spinning on the complex and PA6 (polyamide 6). When the content of the rare earth luminescent material in the fiber is 0.08%, the fiber emits stronger pure red light in a 10-5mol/L DMF (dimethyl formamide) solution and the luminescent position is still at 615nm. The luminescent fiber has the advantages of high colour purity and better spinnability.

A model for learning dentistry skills and including a shell attachable to a phantom head, through-holes disposed in the shell, teaching teeth individually arranged in the through-holes, and having a carrier plate attachable to the shell, such that a teaching tooth is releasably fixed on the shell and is adapted to be inserted into the model and removed therefrom at least one peg disposed on the carrier plate, and a holding chamber disposed in the peg, wherein a holding element projects from each tooth and passes through a through-hole in the shell and is aligned with a holding chamber and is inserted into the holding chamber, and a holding strip disposed between the shell and the carrier plate and adapted to contours of the carrier plate and the shell and disposed in openings, the holding strip being movable for securing the holding element of the teaching tooth to the carrier plate.

A container composes the refrigerant tank 1 including: a block 13 made of copper, one face of which is exposed inside the refrigerant tank 1, the other face of which is contacted with the heating body 90; and a lamination plate 12 composed of three layer structural material in which a reinforcing material 122 is interposed between skins 121 made of copper, the lamination plate 12 being joined to the block 13. Further, heat can be transferred between the refrigerant and the heating body 90 via a block 13 made of copper, the heat transfer characteristic of which is good. After the completion of the brazing process, the rigidity of the container composing the refrigerant tank can be ensured by a reinforcing member 122, the rigidity of which is higher than that of copper.

A sand wedge and its club head are provided for reducing a striking resistance, and the sand wedge includes a club head coupled to a rod and a weight protrusion of the club head. The club head includes a club head body, an inlay formed on the club head body, and a hollow portion penetrated through the inlay. The weight protrusion is extended to the rear from the bottom of the inlay of the club head body, and provided for adjusting the weight and the center of gravity of the club head, such that when a golfer strikes a golf ball in a sand pit, sands can pass through the inlay to reduce the striking resistance.

The invention concerns a device for operating gripping or movement tools provided at least with a movable member (16, 17) movable alternatively between a first and a second position distanced between them by a cursor (18) susceptible to controlled alter native linear movements starting from an electric actuator. The device comprises a transmission means (27) of the movement connected to the actuator, one towing slide (26) associated with the cursor (18) and susceptible to alternative movements caused by said actuator by means of said transmission means, and at least an elastic member (28) positioned preloaded between said towing slide (26) and said cursor (18) parallel both to their movement direction and to the movement direction of at least a mobile member. The cursor and the towing slide can both move rigidly together as long as the preload of the elastic means remains unchanged, both independently one with the other in reply to the variation of the preload of the elastic means deriving from a resistance against the movement of at least said mobile member.