A gasket installer wrench provides a grasping collet, which extends out of the remover end and clips onto the small ball end of a valve core. The gasket installer guide or wrench is especially suitable for use with a refrigerant valve or tire valve, or to install a valve depressor.

A method for assembling an annular seal element, formed by a sealing cord which runs around an opening on a seal receptacle which runs around on the outside of a component. The method includes introducing two assembly fingers into the opening of the annular seal element, stretching the annular seal element by moving the assembly fingers apart from one another, with the formation of a cord portion of the sealing cord, the cord portion being freely tensioned between the assembly fingers, placing the freely tensioned cord portion onto the seal receptacle in a contact region, applying the annular seal element, by way of its opening, onto the seal receptacle, and removing the assembly fingers from the annular seal element. The assembly fingers are moved so as to follow the profile of the seal receptacle, to travel around the seal receptacle in opposite directions.

An electric actuator has a housing, an electric motor mounted on the housing, a speed reduction mechanism, and a ball screw mechanism that converts the rotational motion of the electric motor to axial linear motion of a drive shaft. An annular groove is formed on an open end of the blind bore of the housing. The sleeve is axially immovably secured by a annular stopper ring fit into the annular groove. The stopper ring has one notch and a recess formed on its inner circumference near each of its two ends of the stopper ring. A contour of each recess has a circular arc portion and a flat portion. The circular arc portion has a predetermined radius of curvature. The flat portion tangentially extends from the circular arc portion. A width of the opening of the recess is smaller than a diameter of the circular arc portion.

The flexible ring fitting device includes a flexible ring disposition mechanism 10 for disposing a flexible ring R relative to an annular groove G of a workpiece W and flexible ring assembly mechanisms 421 and 422 including an arm portion 424 rotating while pushing the flexible ring R along the outer periphery of the workpiece W. The flexible ring assembly mechanisms 421 and 422 are movable with respect to the workpiece W and include an elastic body 51 urging the arm portion 424 of the flexible ring assembly mechanisms 421 and 422 so as to press the arm portion 424 with respect to the workpiece W.

An end effector has an end effector base portion connected to a robot arm, and an elastic component holding unit provided to the end effector base portion so as to hold an elastic component. The elastic component holding unit has a plurality of elastic component gripping members which releasably grip the elastic component, and a biasing unit for repulsively biasing each distal end portion of the plurality of elastic component gripping members from a releasing position for releasing the elastic component toward a gripping position for gripping the elastic component. An end effector capable of simplifying a fitting work of an elastic component such as the O ring can be provided.

A device, a modular construction system and a method for inserting an elastic ring into an inner groove of a workpiece opening provides that the device the ring is fixed by multiple retainers to specific retaining regions and between the retaining regions said ring acquires a wavy shape or crown shape in an axial direction.

A sealing fin fixing apparatus can fix a sealing fin to a rotor in a shortened period of time to minimize variations of the pullout strength of the sealing fin. In the sealing fin fixing apparatus that fixes the sealing fin in a sealing groove defined in the outer circumference of the rotor of a rotary machine and includes a headstock for setting a rotor thereon, a Z-stage movable along a Z-axis, an X-stage movable along an X-axis, a tool rest supported on the X-stage, and a caulking tool mounted on the tool rest and including a shank and a pressing roller, while the pressing roller is being held against a caulking wire inserted, together with the sealing fin, in the sealing groove in the rotor that is set on the headstock, the headstock is actuated to rotate the rotor, thereby caulking the caulking wire to fix the sealing fin to the rotor.

An object of the present invention is to provide a device for installing a retaining ring on a shaft which can reduce the labor intensity of workers. The device for installing a retaining ring on a shaft comprises an expansion assembly. The expansion assembly includes a shell. A push block is movably fixed in the shell. Two expansion members that are symmetrical left and right are arranged in front of the push block. The expansion members include expansion portions that are located outside the shell and extend outward. Rear ends of the expansion portions are expansion portion first sections. The expansion members comprise a left expansion member on the left side and a right expansion member on the right side. The left end face of the expansion portion first section of the left expansion member is a slope extending leftward from rear to front. The push plate moves in a front-rear direction so that the expansion portions of the two expansion members move left and right, respectively. A loading rod is fixed on the lower side of the shell. A front edge of a front portion of the loading rod extends outward in a circumferential direction to form a limiting bump. A compression spring is sheathed on a rear portion of the loading rod. A front end face of the loading rod is recessed inward to form an evading groove.

An elastic sealing ring expanding apparatus includes a base on which a plurality of posts are disposed, an assembly platform supported on the base by the posts, a plurality of rods movably mounted on the assembly platform, and a driving device mounted on the base. The driving device is configured to drive the rods to move from a center of a rectangle toward a plurality of corners of the rectangle along a plurality of straight paths, expanding an elastic sealing ring sleeved on the rods into a rectangular ring with a predetermined length-width ratio.

An installation tool for installing a seal includes a shaft and a seal-engaging component coupled with the shaft. During an installation of the seal, the seal-engaging component is adapted to couple with the seal. The seal-engaging component includes a first surface and a second surface. The seal-engaging component also includes a first annular ring extending from the first surface and adapted to engage with the seal for coupling the seal with the seal-engaging component. The seal-engaging component further includes a second annular ring extending from the first surface. The installation tool also includes a sliding hammer adapted to slide along a length of the shaft. During the installation of the seal, the sliding hammer is adapted to apply a force to the seal-engaging component for installing the seal at a seal installation location.