Abstract: A piston guiding element, rock drilling machine and method for supporting a front end portion of a percussion piston of a rock drilling machine. The piston guiding element includes a braking recess at its rear end. The element further includes at least one bearing sleeve, which is provided with two axially successive slide bearing sections. Hydraulic fluid is conveyed between the slide bearing sections via a feed system.

Abstract: A rock drilling arrangement includes an impact device having a frame, pressure chambers in the frame, and a piston arranged in the impact device. The arrangement further includes a rear mounting arrangement for attaching the impact device to a carriage, a front mounting arrangement for attaching the impact device to a machine component, at least one fore pressure accumulator arranged on a front side of the rear mounting arrangement in an axial direction of the piston, and at least one rear pressure accumulator arranged on a back side of the rear mounting arrangement. The fore pressure accumulator and the rear pressure accumulator are connected to one of the pressure chambers and arranged to absorb pressure fluctuations in the pressure chambers.

Abstract: According to an example aspect of the present invention, there is provided a liquid handling system for dispensing a liquid sample from a tip. The system comprises a light source configured to project a first beam of light via a first optical path that interacts with the tip or its contents, and further configured to direct a second beam of light via a second optical path that does not interact with the tip and its contents; a first detector configured to detect the first beam of light; a second detector configured to detect the second beam of light; an analysis unit configured to analyse a state of the tip on the basis of signals obtained from the first and second detectors; wherein the second detector is a normalization detector configured to measure intensity of the light source.

Abstract: The invention relates to a crusher for crushing solid material, the crusher comprising a frame; at least one crusher rotor arranged rotatably to the frame and having crusher blades secured to the circumference thereof; a yielding counterblade structure arranged for cooperation with the crusher blades of the rotor for concurrently crushing and cutting said material and for yielding when encountering non-crushable material and when overloaded; and a yielding and downwardly openable set of screens below the crusher rotor, whereby the counterblade structure is linked to the frame of the set of screens and made turnable towards it with respect for the pivoting shaft in a yield situation; and the set of screens is linked to the crusher frame on the opposite side of the crusher rotor with respect to the counterblade structure and its pivoting shaft and made downwardly collapsible about the pivoting shaft of the set of screens.

Abstract: An impact device and a method of dismounting an impact device from a breaking device is disclosed. The impact device includes a bush having a percussion piston disposed therein. The impact device is arranged inside an impact device space formed in a frame of a breaking device. The percussion piston is provided with a pull shoulder allowing a dismounting force in a return direction to be transmitted from the percussion piston to the bush. Thus, the bush is extracted from the frame by means of the percussion piston.

Abstract: The invention relates to a crusher for crushing solid material the crusher comprising a frame; at least one crusher rotor arranged rotatably to the frame and having crusher blades secured to the circumference thereof a yielding counterblade structure arranged for cooperation with the crusher blades of the rotor for concurrently crushing and cutting said material and for yielding when encountering non-crushable material and when overloaded and a yielding and downwardly openable set of screens below the crusher rotor, whereby the counterblade structure is linked to the frame of the set of screens and made turnable towards it with respect for the pivoting shaft in a yield situation; and the set of screens is linked to the crusher frame on the opposite side of the crusher rotor with respect to the counterblade structure and its pivoting shaft and made downwardly collapsible about the pivoting shaft of the set of screens.

Abstract: A system, server, method, and computer program product are disclosed for facilitating the creation of push messages pertaining to context dependent services and managing their delivery to mobile wireless devices having diverse routing, scheduling, and context or event-triggering requirements. A web-based interface is presented on an administrator console for defining profiles specifying content delivery characteristics for a plurality of mobile wireless devices. The profiles can include a recipient characteristic, a message delivery mode characteristic, and a bearer characteristic. A Service Manager is coupled to the web-based interface and to a plurality of access points, for pushing a message via a specified bearer, using a specified delivery mode, to one of the plurality of mobile wireless devices of a specified recipient satisfying one of the defined profiles of content delivery characteristics when the one device is located within a coverage area of one of the plurality of access points.

Abstract: Systems and methods applicable, for instance, in facilitating communications. A wireless node and/or other computer might, for example, have connectivity via a network, and/or might search for networks. The wireless node and/or other computer might, for instance, request that communications be diverted to one or more telephone numbers associated with one or more found networks, and/or might establish connectivity via one or more found networks.

Abstract: A system, server, method, and computer program product are disclosed for facilitating the creation of push messages pertaining to context dependent services and managing their delivery to mobile wireless devices having diverse routing, scheduling, and context or event-triggering requirements. A web-based interface is presented on an administrator console for defining profiles specifying content delivery characteristics for a plurality of mobile wireless devices. The profiles can include a recipient characteristic, a message delivery mode characteristic, and a bearer characteristic. A Service Manager is coupled to the web-based interface and to a plurality of access points, for pushing a message via a specified bearer, using a specified delivery mode, to one of the plurality of mobile wireless devices of a specified recipient satisfying one of the defined profiles of content delivery characteristics when the one device is located within a coverage area of one of the plurality of access points.

Abstract: Methods and arrangements are disclosed for transferring digital data over a limited speed communications link between a client side subarrangement (401) and a server side subarrangement (402). Within the client side subarrangement (401), a client application (411, 502) receives and transmits digital data using a first communications protocol stack (412, 503, 504, 505) and, within the server side subarrangement (402), a server application (426, 572) receives and transmits digital data using the first communications protocol stack (425, 573, 574, 575). Digital data is transferred between the client application (411, 502) and the server application (426, 572) through a client proxy (511) within the client side subarrangement (401) and an access gateway (551) within the server side subarrangement (402).

Abstract: Methods and arrangements are disclosed for transferring digital data over a limited speed communications link between a client side subarrangement (401) and a server side subarrangement (402). Within the client side subarrangement (401) a client application (411, 502) receives and transmits digital data using a first communications protocol stack (412, 503, 504, 505) and within the server side subarrangement (402) a server application (426, 572) receives and transmits digital data using the first communications protocol stack (425, 573, 574, 575). Digital data is transferred between the client application (411, 502) and the server application (426, 572) through a client proxy (511) within the client side subarrangement (401) and an access gateway (551) within the server side subarrangement (402).

Abstract: Methods and arrangements are disclosed for transferring digital data over a limited speed communications link between a client side subarrangement (401) and a server side subarrangement (402). Within the client side subarrangement (401) a client application (411, 502) receives and transmits digital data using a first communications protocol stack (412, 503, 504, 505) and within the server side subarrangement (402) a server application (426, 572) receives and transmits digital data using the first communications protocol stack (425, 573, 574, 575). Digital data is transferred between the client application (411, 502) and the server application (426, 572) through a client proxy (511) within the client side subarrangement (401) and an access gateway (551) within the server side subarrangement (402).

Abstract: The invention relates to a method for the determination of the condition of the insulation of an object (1) made of an electrically conducting material, coated with an electrical insulation (2) and positioned in an electrically conducting medium. According to the invention, the determination of the condition of the insulation is carried out without any electric contact with the object to be monitored in such a way that a first electromagnetic field (6) is created in the conducting medium (3), which field induces eddy currents (7, 8) both in the medium (3) and in the conducting object (1) positioned therein, a second electromagnetic field created by the eddy currents (7, 8) passing both in the conducting medium (3) and in the conducting object (1) is measured in the form of electrical information, essentially excluding the effect of the first electromagnetic field, and said electrical information is analyzed for detecting any changes in the condition of the insulation.