Abstract: A wheel lifting device comprising a base structure with support means for being supported by a ground surface and a lifting frame with at least one wheel support member and a frame leg which extends upwardly at an angle to the ground surface. A link mechanism is connected to the base structure and to the lifting frame and a pivotal manoeuvring lever is connected to the link mechanism for lifting the lifting frame relative to the base structure. The blocking device for locking the manoeuvring lever at any desired pivotal position comprises a weight which is slidable along the frame leg and arranged to intersect the pivotal movement path of the manoeuvring lever and to be brought into frictional engagement with the frame leg when influenced by a force generated by the manoeuvring lever in order to block the lifting frame from downward movement relative to the base structure.

Abstract: A wheel lifting device comprising a base structure with support means for being supported by a ground surface and a lifting frame with at least one wheel support member and a frame leg which extends upwardly at an angle to the ground surface. A link mechanism is connected to the base structure and to the lifting frame and a pivotal manoeuvring lever is connected to the link mechanism for lifting the lifting frame relative to the base structure. The blocking device for locking the manoeuvring lever at any desired pivotal position comprises a weight which is slidable along the frame leg and arranged to intersect the pivotal movement path of the manoeuvring lever and to be brought into frictional engagement with the frame leg when influenced by a force generated by the manoeuvring lever in order to block the lifting frame from downward movement relative to the base structure.

Abstract: A wheel lifting device comprising a frame, a wheel support which is fixed to the frame and a manually manoeuvrable jack. The frame comprises guiding means which are arranged to receive at least two vertical bars of a two-wheeled tiltable hand cart and to guide the frame rectilinearly along said bars during vertical displacement of the frame relative to the handcart. The jack comprises an eccentric which is rotationally fixed to the frame or arranged to be rotationally fixed to the hand cart and which exhibits a peripheral support surface which is arranged to bear against hand cart or the frame respectively.

Abstract: Arrangement for securing a hearing protector to a helmet, which arrangement comprises a cap holder piece (102) and a helmet piece (101). The cap holder piece contains a rotary plate (103), a bistable element (104) and a cap holder element (105), which is secured by means of the bistable element to the rotary plate to allow a hearing protection, secured to the cap holder element, to take up a tilted out and a tilted in position relative to the rotary plate. The helmet piece comprises means (112, 112?) of attachment to a helmet and a receiving piece (111), in which the rotary plate is secured, able to turn about an axis of rotation, which receiving piece includes a resilient tongue (113) essentially parallel to the axis of rotation and a first stop piece (116) which, under the action of the resilient tongue and in cooperation with a second stop piece (132) arranged on the rotary plate, releasably maintains the rotary plate in a first rotational position relative to the receiving piece.

Abstract: Tool for injection-molding a hearing protection cup which includes a curved shell with an opening for receiving an ear, and a washer which extends around the opening and is connected to the edge thereof. The washer projects inward across the opening along at least two opposite sides thereof and is intended to support a sealing and comfort ring which is intended to rest against the head. The tool includes a common mold cavity intended to produce the shell and the washer in one piece, and an insert which can be introduced into this mold cavity for forming the inner surfaces of the shell and of the washer. The insert is divided into at least three portions by means of dividing planes which extend in the same principal direction as the opposite sides of the opening. The invention also relates to a method for producing a hearing protection cup, and to a hearing protection cup produced using the method.

Abstract: Ear defenders comprising an elastic headband (1) and an ear muff (4) arranged on the inside of each leg (2) of the headband. The ear muffs (4) are arranged displaceably along the insides of the legs (2) from the end positions of the legs and so far along the legs that the free ends (7) of the latter can be bent towards and connected to one another, so that the legs completely surround the ear muffs (4). This means that the ear defenders can be compressed before storage in, for example, a pocket.

Abstract: A handle for hand-held tools, particularly files, that have an end portion (3) for insertion into the handle (1). The handle includes at least two parts (4, 5) which are separated in the insertion direction of the end portion of the tool and includes end-portion guides (6). One guide has the form of a hole (6) in one handle part (4). A surface on the guide in the other handle part (5) intended for coaction with the end portion (3) of the tool is displaced laterally in relation to a corresponding surface in the hole (6). The two handle parts (4, 5) are resiliently movable relative to one another, to permit reduction in the displacement between the surfaces in conjunction with inserting the end portion (3) of the tool into the handle (1). The end portion of the tool is automatically clamped firmly in the handle as the handle parts tend to spring back to their original positions.