A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The first jaw comprises a first engagement section and the second jaw comprises a second engagement section. The press ring comprises a first and a second receiving section for receiving the first and the second engagement section of the press jaws, respectively. A first and a second surface of the first and the second receiving section, respectively, contact the first and the second engagement section, respectively. Each comprise a planar surface. The first and the second contact surface oppose each other for applying a press force F. The first contact surface and the second contact surface each comprise at least one convex surface.

A hydraulically operated handheld device and a method of operating same are provided. The device includes a hydraulic pump, a moving part, a fixed part and a return valve with an associated valve seat. The moving part is moved into a working position due to the buildup of a hydraulic pressure by filling a hydraulic chamber with hydraulic medium from a reservoir with the aid of the hydraulic pump. The moving part can be automatically moved back from the working position into an end position upon reaching a predefined working pressure by opening the return valve. The hydraulic pressure acting upon the return valve is increased by a separately triggerable pressure increase, which results in opening of the return valve, in a hydraulic medium volume located upstream of the return valve in a flow direction of the hydraulic medium during the movement into the end position.

A hydraulically operated handheld device and a method of operating same are provided. The device includes a hydraulic pump, a moving part, a fixed part and a return valve with an associated valve seat. The moving part is moved into a working position due to the buildup of a hydraulic pressure by filling a hydraulic chamber with hydraulic medium from a reservoir with the aid of the hydraulic pump. The moving part can be automatically moved back from the working position into an end position upon reaching a predefined working pressure by opening the return valve. The hydraulic pressure acting upon the return valve is increased by a separately triggerable pressure increase, which results in opening of the return valve, in a hydraulic medium volume located upstream of the return valve in a flow direction of the hydraulic medium during the movement into the end position.

Power tool for performing work on an object such as crimping or cutting the object, the tool having vents in the tool housing for enabling airflow, wherein such vents have a partition member extending across them for restricting liquid water and dust ingress, and method of assembly. Power tool for performing work on an object, the tool having a switch, wherein the switch is provided on a support that is clamped between opposing tool housing portions for forming a seal to restrict the ingress of liquid water into the tool housing interior via the switch, and method of assembly. Power tool for performing work on an object, the tool having an arrangement of light emitting elements directed towards an operative part of the tool for indicating operational information to a user without requiring the user to remove their gaze from the operative part of the tool in use.

Power tool for performing work on an object such as crimping or cutting the object, the tool having vents in the tool housing for enabling airflow, wherein such vents have a partition member extending across them for restricting liquid water and dust ingress, and method of assembly. Power tool for performing work on an object, the tool having a switch, wherein the switch is provided on a support that is clamped between opposing tool housing portions for forming a seal to restrict the ingress of liquid water into the tool housing interior via the switch, and method of assembly. Power tool for performing work on an object, the tool having an arrangement of light emitting elements directed towards an operative part of the tool for indicating operational information to a user without requiring the user to remove their gaze from the operative part of the tool in use.

A clamping plier head is provided, which is used in cooperation with a first fitting and a second fitting. The second fitting is matched with the first fitting, and the clamping plier head includes an upper head, a lower head and an elastic clamping piece. The upper head and the plier head are matched to form an accommodating cavity for accommodating the first fitting and the second fitting, and at least one of the first fitting and the second fitting is detachably clamped on an inner wall of the accommodating cavity. The elastic clamping piece, with its own resilience, fixes the fittings detachably clamped on the inner wall to the inner wall.

A clamping plier head is provided, which is used in cooperation with a first fitting and a second fitting. The second fitting is matched with the first fitting, and the clamping plier head includes an upper head, a lower head and an elastic clamping piece. The upper head and the plier head are matched to form an accommodating cavity for accommodating the first fitting and the second fitting, and at least one of the first fitting and the second fitting is detachably clamped on an inner wall of the accommodating cavity. The elastic clamping piece, with its own resilience, fixes the fittings detachably clamped on the inner wall to the inner wall.

Embodiments of the invention provide a ram guide for a crimping tool. The crimping tool includes a crimping head and a ram head. The ram guide includes a track and slot. The ram guide is configured to guide the ram head within a crimp portion of the crimping head to axially align the ram head with the crimping head.

Embodiments of the invention provide a ram guide for a crimping tool. The crimping tool includes a crimping head and a ram head. The ram guide includes a track and slot. The ram guide is configured to guide the ram head within a crimp portion of the crimping head to axially align the ram head with the crimping head.

A working head (1) for a compression or cutting tool (100) comprises a connecting portion (3) for a removable connection of the working head (1) with an actuation part (2) of the tool (100), two jaws (4) movable between an open position and a closed position to perform the compression or cutting, and a local storage (6) configured for storing one or more cumulative data representative of a stress history of the jaws (4), wherein the local storage (6) is fixed to the working head (1).