A pin assist device that eliminates the need to use a separate tool to insert and/or extract a cotter, or other fastening, pin. The pin assist device allows the user to easily insert or extract a pin in locations that are difficult to reach, in all types of weather and virtually all conditions. Related pin assist devices, hitch pins, and hitch pin assemblies are also disclosed.

A plier assembly for retaining rings comprises first and second handle assemblies and a drive assembly. Operation of the drive assembly pivots the first handle assembly relative to the second handle assembly. As the first handle assembly pivots relative to the second handle assembly, a first support block of the first handle assembly pivots relative to the first handle assembly and a second support block of the second handle assembly pivots relative to the second handle assembly such that a first support block longitudinal axis is substantially parallel to a second support block longitudinal axis.

A pushbutton plier device and a method for converting a plier tool is provided. The pushbutton plier device includes a locking assembly. The locking assembly has a pushbutton and a housing. The pushbutton has a pushbutton body. The pushbutton body has at least one blocking member recess. The housing has a housing body. The housing body is configured to selectively contain a blocking member. The pushbutton plier device has a first plier handle and a second plier handle. The first plier handle has at least one first plier handle aperture. The second plier handle has at least one second plier handle aperture. When the first plier handle, the second plier handle, and the locking assembly are selectively joined together in a predetermined position, the locking assembly, located within the first plier handle aperture and the second plier aperture, secures the first plier handle to the second plier handle.

A tool for removing/installing a heavy duty snap ring that is otherwise difficult to access with standard snap ring pliers. The pliers have end configurations that provide additional clearance for the operational use of the tool within confined areas. The tool also includes a locking mechanism to hold the snap ring in an open configuration for removal/installation to the axle shaft.

A pin assist device that eliminates the need to use a separate tool to insert and/or extract a cotter, or other fastening, pin. The pin assist device allows the user to easily insert or extract a pin in locations that are difficult to reach, in all types of weather and virtually all conditions. The pin assists device may be removably attachable to the pin. Related pin assist devices, hitch pins, and hitch pin assemblies are also disclosed.

A plug for retaining a filter screen in a fluid port of a servovalve, comprises an annular body, the annular body comprising: opposed first and second axial end surfaces, a radially inner surface extending between the first and second axial end surfaces, a radially outer surface extending between the first and second axial end surfaces and at least one recess formed in the radially inner surface for receiving a tool for removing the plug from the port. A tool for removing the plug comprises a pair of handles pivotally mounted to one another about a pivot, each handle having a plug gripping portion extending therefrom beyond the pivot, each plug gripping portion comprising an outwardly projecting tooth for engaging in the recess of the plug when the plug gripping portions are moved apart by operation of the handles.

Circlip pliers comprise a first plier and a second plier. The first plier is provided with an external connection portion, an internal connection portion, and a pivot portion located between the external connection portion and the internal connection portion. The second plier is provided with an external connection portion, an internal connection portion, and a second pivot portion located between the second external connection portion and the second internal connection portion. The external connection portions are adapted to insert into grip holes in an external circlip. The internal connection portions are adapted to insert into grip holes in an internal circlip. The first and second pivot portions are pivotally connected with each other.

A plug for retaining a filter screen in a fluid port of a servovalve, comprises an annular body, the annular body comprising: opposed first and second axial end surfaces, a radially inner surface extending between the first and second axial end surfaces, a radially outer surface extending between the first and second axial end surfaces and at least one recess formed in the radially inner surface for receiving a tool for removing the plug from the port. A tool for removing the plug comprises a pair of handles pivotally mounted to one another about a pivot, each handle having a plug gripping portion extending therefrom beyond the pivot, each plug gripping portion comprising an outwardly projecting tooth for engaging in the recess of the plug when the plug gripping portions are moved apart by operation of the handles.

A push button pin for coupling together two halves of pliers. The pin can include one or more balls elastically biased in a radially-outward direction to couple the pin to a retainer. The balls are normally pushed outward by an engagement portion, but a push button head can be pressed axially downward and cause the balls to align with a receiving portion, which allows the balls to descend into the interior of the pin. The push button is also integral with the receiving and engagement portions to better facilitate the movement of the balls and the removability of the pin. A user can therefore quickly adjust the jaw width of a pair of pliers and better utilize the pliers in the process.

A pin assist device that eliminates the need to use a separate tool to insert and/or extract a cotter, or other fastening, pin. The pin assist device allows the user to easily insert or extract a pin in locations that are difficult to reach, in all types of weather and virtually all conditions. Related pin assist devices, hitch pins, and hitch pin assemblies are also disclosed.