A production method for an impeller includes: an impeller molding body forming step of forming an impeller molding body in which a reinforcement portion which reinforces at least one of end portions of the impeller in which an inlet and an outlet of a flow path are formed and the impeller are integrated with each other, by an additive manufacturing method using a metal powder; and a removal step of removing the reinforcement portion from the impeller molding body.

A hands-free dual clamp device includes two clamping units, each having an upper clamping body, a lower clamping body, a mating portion, and a shaft module. The shaft module is spirally inserted through the upper and lower clamping bodies and is rotatable, so as to enable the upper and lower clamping bodies to be adjustable at angles with respect to each other and cooperatively form a clamping space for clamping an external object. A connecting module includes at least a connecting unit having two opposite end portions, which are respectively provided with a first connecting element and a second connecting element. The first connecting element connected to the mating portion of one of the clamping units, and the second connecting element connected to the mating portions of the other of the clamping units, so that the two clamping units are linked together with the connecting module.

A clamp for use with an impact tool; the clamp having a nut for use with impact tools includes a screw on top, a safety handle, and a hole for carabiner clip. In use, a user adjusts the top screw to a length option desired, such that it doesn't slide onto object to be clamped. The clamp further comprises a grip on the safety handle. The clamp provides faster and more efficient use when using an impact tool.

A dog leash supporting clamp system including a clamping member having a threaded aperture for receiving a threaded screw and a 360-degree rotatable swivel clip. The clamping member includes an open-end for securing the clamp assembly to an edge of a flat surfaced item such as a table or chair. The threaded screw is able to be tightened within the threaded aperture via a handle, thereby closing a gap between a top-portion and a bottom-portion of the clamping member to clamp to the edge of the flat surfaced item. The clip is affixed to the threaded screw and may removably receive a pet leash and support the pet leash at an adjustable length.

The present utility model belongs to the field of repair and maintenance of sporting goods, and particularly to a ski holder for waxing and edge trimming which includes a holder body, a fixing member, and a fastening member. The holder body is provided with placement positions for placing a ski and a fixing position for fixing the holder body; the holder body further includes a movable piece, the movable piece is arranged between adjacent placement positions, and the movable piece can move toward the placement positions on both sides thereof. One end of the fixing member passes through the holder body and is exposed at the fixing position, and the fixing member is moved to cooperate with the fixing position to fix the holder body. One end of the fastening member passes through the holder body and is exposed at the first placement position, and the fastening member is moved to cooperate with the placement position to fasten the ski. In the present utility model, the ski in any placement position can be fixed through the short-stroke movement of the fastening member, thereby realizing quick fastening of snowboard and ski. The ski holder provides three placement modes of vertical placement, inclined placement, and horizontal placement, facilitating the maintenance of ski including waxing and edge trimming.

A universal handle attachment for C-clamps. The handle attachment includes a rigid body having a first side to engage a C-clamp, and a second side opposite to engage a rotation tool. In the first side, a first channel and a second channel which are perpendicular with one another each are configured to receive a T-bar of the C-clamp. A center space in the first side at the intersection of the first channel and the second channel is configured to receive a top end of the screw. Each channel includes clip spaces on both sides of the center, and clips situated in the clip spaces. The clips each have an opening to secure the T-bar within the channels.

An anti-pivot and lock mechanism for a clamp including a horizontal post connected and moveable relative to a vertical post. The mechanism engages the vertical post and horizontal post above or below a pivot axis of the horizontal post to prevent or minimize pivoting movement of the horizontal post between changes of consecutive clamped workpieces.

An F-type clamp with an anti-pivot and lock mechanism that engages a side of the first post facing the clamp head below a pivot axis of the guide arm of the clamp; or the anti-pivot axis engages a second side opposite the first side and above the pivot axis of the guide arm.

Disclosed herein is a clamping apparatus that includes an upper jaw structure having a hinge end and a clamp end, a lower jaw structure having a hinge end and a clamp end, and a hinge located at the hinge ends of the upper and lower jaw structures, the hinge providing for rotation of upper jaw structure with respect to the lower jaw structure. The clamping apparatus includes an elongated element threadably attached to the first and second upper jaw structures between the hinge end and the clamp end of each of the first and second upper jaw structures, wherein rotation of the elongated element in a first direction causes the clamp end of the upper jaw structure to move closer to the clamp end of the lower jaw structure. The elongated element includes an end configured to receive a tool configured to facilitate the rotation of the elongated element.

A hands-free dual clamp device includes two clamping units, each having an upper clamping body, a lower clamping body, a mating portion, and a shaft module. The shaft module is spirally inserted through the upper and lower clamping bodies and is rotatable, so as to enable the upper and lower clamping bodies to be adjustable at angles with respect to each other and cooperatively form a clamping space for clamping an external object. A connecting module includes at least a connecting unit having two opposite end portions, which are respectively provided with a first connecting element and a second connecting element. The first connecting element connected to the mating portion of one of the clamping units, and the second connecting element connected to the mating portions of the other of the clamping units, so that the two clamping units are linked together with the connecting module.