A locking mechanism is described herein that is attachable to tubing or casing tongs to maintain the engagement of a clamping apparatus of the tubing or casing tongs with a tubular member using only the locking mechanism and the tubing or casing tongs. The tubing or casing tongs can also include a handle for supporting the clamping apparatus that engages the tubular member. The locking mechanism can include a pitman arm rotatably supported by the handle of the tubing or casing tongs. The locking mechanism also includes an adjustable sleeve slidably supported by the pitman arm and a tension arm rotatably supported by the adjustable sleeve to engage with the clamping apparatus.

A truly one-handed operable pipe wrench is provided which includes a handle having a first end and a second end, a fixed jaw disposed at the second end of the handle, and a rotatable jaw pivotally attached to the second end of the handle. The rotatable jaw includes a first engaging end and a second driven end. A lever arm is pivotally attached to the handle. The lever arm includes a handle portion and an actuating portion. When the lever arm rotates relative to the handle, the actuating portion is in contact with the second driven end of the rotatable jaw causing the rotatable jaw to rotate relative to the second end of the handle.

Infiltrated diamond bodies for use in gripping drill rods and other tubulars. One example of such an infiltrated diamond body is a cast diamond roller having a plurality of pads that are separated by channels. Another example of such an infiltrated diamond body is a cast wrench jaw having at least one raised jaw pad.

A pipe wrench structure with a secure positioning function includes a main body, an engaging portion including a pivot point, an upper jaw and a lower jaw for performing an opening/closing operation, a pipe being placed between the upper and lower jaws while clamping the pipe; an elastic restoring member, installed to the upper and lower jaws and configured to be corresponsive to the pivot point, and provided for providing a pressing force to the upper jaw; an auxiliary ratchet surface, disposed at the lower jaw; an arc ratchet surface, disposed on an inner side of the upper jaw opposite to the lower jaw, and being in form of concave arc surface without an included angle, and the curvature of the arc ratchet surface being greater than the external periphery of the pipe.

A self-adjusting pipe wrench tool has a handle, a heel jaw at a distal and of the handle, the heel jaw defining a curved grip face, and an adjustable jaw pivotally coupled to the handle at a pivot point, the adjustable jaw defining a planar proximal grip face and a planar distal grip face at an angle to the proximal pipe face. The self-adjusting pipe wrench tool has particular geometry to maximise the operational gripping diameter range thereof.

A safety handle for use with conventional pipe tongs. The safety handle has a hand grip, as well as upper and lower flange members. The flange members beneficially define a recess for receiving (and protecting) a user's thumb. At least one attachment cavity is provided for receiving, and securely attaching the safety handle to, a tong jaw member.

Various implementations include a surgical screwdriver that comprises a first rotating shaft configured to be rotated about a respective longitudinal axis, a second rotating shaft extending along a respective development axis transverse to the longitudinal axis of the first shaft and having a shaped end tip that can be inserted into the head of a screw, and a transmission member interposed between respective first ends of the shafts to transfer the rotation from the first shaft to the second shaft. The transmission member comprises a pair of hemispherical elements, hinged together about a respective junction axis that is perpendicular to the longitudinal axis of the first shaft, and each hemispherical element is in turn hinged to a first end of one of said shafts.

A pipe wrench includes jaws and a handle portion. The handle portion includes an outer shell disposed outside and an extension body encircled by the outer shell. A first end of the extension body extends into interior of the outer shell. A second end of the extension body is connected to the jaws. The outer shell and the extension body are not rotatable relative to each other. The handle portion further includes a locking element encircling the second end of the extension body.

An adjustable universal pipe fastening tool is configured such that mechanical elements, particularly fastening members such as bolts and nuts and pipes, can be easily fastened and unfastened using a single tool, thereby ensuring a convenient use. Particularly, an adjustable universal pipe fastening tool having a spanner portion is provided, which is configured to rotate, and a wrench portion, which is configured to be able to slide. The adjustable universal pipe fastening tool according to the present invention comprises: a body portion, which has a sliding hole formed on a surface thereof; a spanner portion formed on one side of the body portion so as to manage fastening and unfastening of mechanical elements; and a wrench portion formed on the other side of the body portion so as to manage fastening and unfastening of mechanical elements while sliding inside the sliding hole of the body portion.

A pipe plier structure includes a first body, a second body, a pivot member, and a locking member. The first body is provided with multiple first teeth, an arc line, an axis, a first vertical line, a radius, a first angle, and a second angle. The second body is provided with multiple second teeth, multiple third teeth, a second vertical line, a first connecting line, a second connecting line, a third angle, a fourth angle, a concave face, a fifth angle, a sixth angle, a seventh angle, and an eighth angle. The pivot member is assembled with the first body and the second body. The locking member is assembled with the first body and the second body. The locking member provides an elastically restoring force to the first body and the second body after the second body is extended outward relative to the first body.