Abstract: A hydraulic pump includes a pump housing block, a rotary drive shaft and plural pumping assemblies extending radially from the rotary drive shaft. Each pumping assembly includes a reciprocating piston, a cylinder lining, and a piston return spring mounted between the piston and the lining. The cylinder linings are inserted into the pump block from the outside and a detachable latching device secures the linings to the block. The cylinder lining, the piston and the piston return spring can be easily removed and replaced after the latching device, for instance a locking ring, has been removed.

Abstract: A tool head comprising a fixed jaw (20), a movable jaw (21) journalled for movement towards and away from the fixed jaw, a pressure plunger-cylinder means (12-18) for driving the movable jaw, an electric control circuit (36-38, 40, 41, 51) for operating the plunger-cylinder means, and connecting means (52-55, 57) for connecting the plunger-cylinder means (12-18) and the control circuit to an electrical power and pressure-medium supply source separate from the tool head through the medium of a flexible conduit. The movable jaw (21) is guided for movement relative to the plunger-cylinder means (12-18) and is spring-biassed (22) from a retracted position in which it supports against the plunger-cylinder means towards an outwardly projected position in which it is located adjacent the fixed jaw (20).

Abstract: An independent, portable hydraulic unit (80) for powering a hydraulic tool (C), and a method for operating the tool (c) with the aid of the unit. The unit includes a hydraulic circuit (1) having a pump (19) and a power source (17) and a pump motor (18). The pump (19) is intended to pressurize the tool (C) to a first pressure level (P2). The hydraulic circuit charges the hydraulic accumulator (22) to a maximum second pressure level (P1) which is at most equal to the first pressure level (P2). A check valve (31) isolates the hydraulic accumulator (22) from the pump pressure when this pressure exceeds the second pressure level (P1). A closure valve (12) and check valve (21) are provided for enabling the charged accumulator (22) to be connected to the tool upon activation of the unit so as to power the tool. A microprocessor (70) causes the pump (19) to charge the accumulator to the second pressure level while the tool is relieved of pressure, after emptying the accumulator (22).

Abstract: A tool is provided with two jaws (16, 17) which are movable between an open position and a closed position, means (19, 20, 22) for transmitting movement to the jaws, and a marking device (3-8, 10) for the indication of a completed jaw movement and/or the prevention of a premature interruption of an initiated jaw movement. The marking device includes a cam (3) and a cam follower (7) which are carried by an associated movement transmitting means or an associated jaw. The cam follower (7) projects outwardly of and is mounted for movement along a U-shaped or V-shaped slot (10) which is arranged in an associated movement transmitting means or jaw adjacent the cam and the legs of which extend obliquely away from the cam (3) and the base-part of which is at least partially covered by the cam when the jaws are in a position between the open position and the closed position. The cam surface (6) is arcuate and smooth or toothed.

Abstract: A crimping tool includes first and second jaws (1, 2) which are journalled at a first pivot point (5) for pivotal movement relative to one another. A forward end of a first handle (6) is rigidly connected to the first jaw (1), while a forward end of a second handle (7) is pivotally connected to the second jaw (2) at a second pivot point (8). A linkage construction (9) extends obliquely rearwards from a third pivot point (10) located on the second handle (7) rearwardly of the second pivot point (8), up to a fourth pivot point (11) on the first handle (6). The distance (D) between the first and the second pivot points (5, 8) is 0.30-0.35 times the distance (A) between the first and the fourth pivot points (5, 11), the distance (C) between the second and the third pivot points (8, 10) is 0.20-0.25 times the distance (A) between the first and the fourth pivot points (5, 11), and the distance (B) between the third and the fourth pivot points (10, 11) is 0.62-0.

Abstract: A cable stripping tool is set forth of the kind that includes a first and a second leg, the first leg is provided with a fitting for at least one cutter, optionally fitted in a removable cutter cassette, and of which the second leg is provided opposite the fitting with a seating for receiving a cable from which insulation is to be removed and for supporting the cable in a position at right angles to said cutter, the legs being pivotable relative to one another in a longitudinally extending central plane containing both of the legs against the action of a resiliently flexible or bendable spring device which mutually connects said legs and which is operative to resiliently bias the legs towards a working position in which a cable positioned in the seating is resiliently pressed against the cutter or cutters in the fitting.

Abstract: A tool for crimping a connector onto a cable includes a crimping device which is mounted on a forward end of an axially movable piston, and a localizing device for detachably holding a cable and a connector in position for coaction with the crimping device while crimping the connector onto the cable. The piston is journalled in a hollow spindle and is driven reciprocatingly at a pre-determined length of stroke by means of a drive mechanism. The tool further has a distance setting means, including an external screw thread on the spindle and a nut surrounding the spindle and engaging the screw thread thereof, for continuous setting of the distance between the crimping device, when the piston is located in its retracted position, and the localizing device.

Abstract: A tool for stripping insulation from electric cables has two jaws. The jaws are mounted at one end on a pin and can be swung towards each other and latched in their swung-together position. The jaws are provided with a cable support means and a countersupport means or bed, for receiving a cable to be stripped. In their swung-together position, the jaws can be moved apart at one end thereof to a limited extent against the bias of a spring means which endeavors to hold the jaws together.

Abstract: A crimping tool includes at least three crimping jaws guided for displacement in a tool body. The jaws present first, second and third straight jaw surfaces, wherewith the first jaw surfaces together define a crimping opening. The first jaw surface on each jaw is constantly in slidable abutment with the second jaw surface of an adjacent jaw. The third jaw surfaces abut against and are movable along a respective straight guide surface formed in the tool body. These guide surfaces or extensions thereof define, when projected onto a plane extending at right angles to all guide surfaces, a polygon having the same number of sides as there are jaws present. The first, second and third jaw surfaces of each jaw or their extensions define a triangle, when projected onto said plane.

Abstract: A tool for stripping surface layers from elongate objects includes an elongate frame, a jaw means which extends along the frame and which is pivotally mounted in the frame and a leg which also extends along the frame and which is pivotally mounted in the frame. When the leg is pivoted towards the frame, the leg is arranged to swing the jaw means towards the frame, via a camming arrangement, against the action of a restoring means. At one end of the tool, the frame and the jaw means have mutually facing clamping surfaces, and a stripping knife means which is arranged between the frame and the jaw means for movement therealong from a starting position adjacent the clamping surfaces. The stripping knife means includes two carriers for a respective one of two stripping knives which are arranged to be brought together by means of the jaw means and which extend transversely relative to the frame.