The present invention provides a holding mechanism capable of well preventing misalignment of a workpiece even if the outer diameter of the workpiece is changed when the workpiece is supported at three points by a flat face and a V-shaped groove. Additionally, the present invention provides a holding mechanism of a transfer device capable of stably detecting a chucking error of holding claws for a workpiece.

A puller for pulling an element, such as a pulley or seal, from an assembly to which it is fitted. The puller generally includes a central body having a longitudinal axis, an adjustment ring threaded on the body for moving longitudinally with rotation, slide followers coupled to the ring and moving longitudinally with ring rotation, a plurality of leg assemblies, each including a foot and two legs pivotly attaching the foot to the body so as to form a parallelogram, and a arm pivotly connecting each slide follower to a leg assembly for expanding or contracting the leg assembly. Each foot has one or more foot flanges, each with an engagement surface for engaging with the element to be pulled; the orientation of the engagement surfaces being predetermined so as to not disengage from the element and to provide uniform pull and minimum pressure.

A chuck mechanism enables downsizing of the device with a simple structure, has a wide open/close width of clamps, and hardly causes a dent or scar on pipes. The chuck mechanism includes a horizontally arranged shaft, a frame, a pair of dog leg shaped link members, parallel link members, a pair of clamp members, and a swing drive mechanism.

The present invention provides a holding mechanism capable of well preventing misalignment of a workpiece even if the outer diameter of the workpiece is changed when the workpiece is supported at three points by a flat face and a V-shaped groove. Additionally, the present invention provides a holding mechanism of a transfer device capable of stably detecting a chucking error of holding claws for a workpiece.

A snap ring insertion apparatus is provided and configured to install a snap ring on a structural member. The snap ring insertion apparatus includes a pneumatic cylinder assembly configured to receive compressed gas and transfer a power of an expansion of the compressed gas to linear movement of a rod. An insertion assembly is coupled to the rod. The insertion assembly has an expander pin and a plurality of fingers pivotably coupled to a finger support member. The finger support member is coupled to the rod in a manner such that linear movement of the rod provides linear movement of the expander pin and pivoting movement of the fingers. Pivoting movement of the fingers results in engagement of the fingers with a snap ring and further pivoting of the fingers results in an expansion of the snap ring in a radial direction.

A snap ring insertion apparatus is provided and configured to install a snap ring on a structural member. The snap ring insertion apparatus includes a pneumatic cylinder assembly configured to receive compressed gas and transfer a power of an expansion of the compressed gas to linear movement of a rod. An insertion assembly is coupled to the rod. The insertion assembly has an expander pin and a plurality of fingers pivotably coupled to a finger support member. The finger support member is coupled to the rod in a manner such that linear movement of the rod provides linear movement of the expander pin and pivoting movement of the fingers. Pivoting movement of the fingers results in engagement of the fingers with a snap ring and further pivoting of the fingers results in an expansion of the snap ring in a radial direction.

Improved wheel removal tools may include a frame, one or more removal members movably coupled to the frame and one or more connection members coupled to a respective removal member. In operation, the frame may be attached to the wheel, such as at one or more wheel studs or bolts, and the connection members may be attached to the wheel, such as by engaging apertures in the wheel. The base may be configured to leverage the wheel studsrather than the axle hubduring the wheel removal process. Once engaged with the wheel, the removal members may be moved away from the wheel by an operator so that the connection members pull the wheel to dislodge the seized wheel from the vehicle.

A chuck mechanism enables downsizing of the device with a simple structure, has a wide open/close width of clamps, and hardly causes a dent or scar on pipes. The chuck mechanism includes a horizontally arranged shaft, a frame, a pair of dog leg shaped link members, parallel link members, a pair of clamp members, and a swing drive mechanism.

A plug removal device for removing a plug from an access port located below a deck includes retracting means and a framework supporting the retracting means at an elevated position with respect to the deck. The framework is rigid and has a central axis. The retracting means produces a retracting force along a retracting axis. In response to the retracting means producing the retracting force, the framework moves along the deck to align the retracting axis with the central axis.