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Ahola, FI
Erkki Ahola, Kangasala FI
| Patent application number | Description | Published |
|---|---|---|
| 20090025948 | Percussion Device - The invention relates to a method for controlling the operation of a pressure fluid operated percussion device and to a pressure fluid operated percussion device. The method comprises influencing the shape of a stress wave by setting a suitable clearance between a transmission piston and a tool. The percussion device is provided with means for setting the clearance between the transmission piston and the tool. | 01-29-2009 |
| 20090065256 | Method and Rock Drilling Rig for Hole Drilling - The invention relates to a method and a rock drilling rig for drilling a hole in a rock. In the method the hole is drilled with a so-called top-hammer rock drilling rig including a drill rod and a cone roller bit at the end of the drill rod. During drilling with the percussion device, stress pulses of low amplitude are produced at a high frequency of at least 200 Hz. In the rock drilling rig, the cone roller bit ( | 03-12-2009 |
| 20090188686 | Method for controlling percussion device, software production, and percussion device - A method and software product for controlling a percussion device belonging to a rock-drilling machine, and a percussion device. The impact frequency of the percussion device is set so that the percussion device forms a new compression stress wave to the tool always when reflected waves from the previous compression stress waves reach a first end of the tool. This requires that the impact frequency be set proportional to the propagation time of the stress wave, whereby the length of the used tool and the propagation velocity of the stress wave in the tool material are to be noted. | 07-30-2009 |
| 20090266568 | Method for Controlling Pressure Fluid Operated Percussion Device, and Percussion Device - The invention relates to a method for controlling a pressure fluid operated percussion device comprising a working chamber for pressure fluid and in the working chamber a transmission piston installed movably with respect thereto so as to enable a tool installed in the percussion device to be pressed against a material to be broken in order to generate a stress pulse, and to a percussion device. | 10-29-2009 |
| 20100270076 | METHOD AND EQUIPMENT FOR SMALL-CHARGE BLASTING - A method for small-charge blasting, and a rock drilling unit used therein. By means of a rock drilling machine of the rock drilling unit, a drill hole is first drilled into material to be excavated, after which one or more cartridges comprising a propellant charge are fed through a drilling tool onto the bottom of the drill hole. The drilling unit comprises a cartridge feed station, which is separate from the rock drilling machine and from which the cartridges may be fed into a longitudinal channel in the drilling tool. | 10-28-2010 |
| 20100275801 | METHOD AND APPARATUS FOR SMALL-CHARGE BLASTING - A method of small-charge blasting, a rock drilling unit and a front guide to be used therein. By means of a rock drill machine provided in the rock drilling unit, a hole is first drilled into a material to be excavated and, subsequently, a drilling tool is pulled out of the hole. Next, one or more propellants comprising a propellant charge are fed to the bottom of the hole through a propellant feed channel provided in connection with a feed beam. Then, the hole is sealed and the propellant is ignited, whereupon a high gas pressure is generated, which causes fractioning in the material to be excavated. During the feeding and ignition of the propellant, the rock drill machine is kept in a parallel direction with respect to the hole. | 11-04-2010 |
Jero Ahola, Lappeenranta FI
| Patent application number | Description | Published |
|---|---|---|
| 20100143157 | METHOD AND SYSTEM FOR DETECTING CAVITATION OF PUMP AND FREQUENCY CONVERTER - A method and a system are disclosed in accordance with a pump controlled with a frequency converter. An exemplary method includes controlling the pump with a frequency converter, the frequency converter feeding a motor connected to drive the pump, providing a torque estimate (T | 06-10-2010 |
Juhana Ahola, Vantaa FI
| Patent application number | Description | Published |
|---|---|---|
| 20090291023 | Chemistry for Effective Microbe Control with Reduced Gas Phase Corrosiveness in Pulp & Paper Processing Systems - Processes for biofilm or microorganism growth control in an aqueous system such as a pulp, paper or board manufacturing system are described in which a halogenated hydantoin is added to the aqueous system in combination with haloamine, chlorine dioxide or a combination thereof. The halogenated hydantoin is preferably a fully or partially halogenated dialkyl hydantoin, and more preferably 5,5-dimethyl hydantoin or 5-methyl-5-ethyl hydantoin. The haloamine is preferably a monohaloamine, dihaloamine, trihaloamine, or a combination thereof, and more preferably monochloramine, monobromamine, bromochloroamine or a combination thereof. The halogenated hydantoin is preferably added to the aqueous system in portions of the system susceptible to gas phase corrosion, such as the short loop of the system, and the haloamine and chlorine dioxide are preferably added to other portions of the system. The halogenated hydantoin and haloamine and/or chlorine dioxide maintain good compatibility with each other in the absence of excess free chlorine. | 11-26-2009 |
Kimmo Ahola, Koivisto FI
| Patent application number | Description | Published |
|---|---|---|
| 20100326338 | Device for Gasification and Combustion of Solid Fuel - A partition divides an enclosure into an upper space and a lower space, the partition having a hole which provides essentially the only passage for gas to flow from the lower space to the upper space. A reactor tube having open ends is supported by the partition over the hole, and a grate spaced below the hole. A primary air inlet arrangement feeds air into the lower space for gasification of solid fuel on the grate, and a secondary air inlet directs a jet of air toward the inlet end of combustion tube communicating with the upper space and having an open exhaust end outside the enclosure. Product gas formed by gasification of solid fuel on the grate and passing through the reactor tube into the upper space will be drawn into the combustion tube to create a sub-atmospheric pressure in the upper space. | 12-30-2010 |
Manja Ahola, Plikklo FI
| Patent application number | Description | Published |
|---|---|---|
| 20110146693 | INTRAUTERINE DELIVERY SYSTEM FOR CONTRACEPTION - The invention relates to a method for contraception and for reducing menstrual problems and inducing amenorrhea, wherein an intrauterine delivery device is used for the controlled release of a combination of progestogen or a drug having a progestogenic activity and at least one therapeutically active substance capable of preventing or suppressing abnormal and/or irregular endometrial bleeding over a prolonged period of time. | 06-23-2011 |
Manja Ahola, Piikkio FI
| Patent application number | Description | Published |
|---|---|---|
| 20090104245 | BIODEGRADABLE CARRIER AND METHOD FOR PREPARATION THEREOF - A biodegradable carrier is produced for preservation and/or controlled delivery of biologically active agents where said biodegradable carrier is a silica xerogel which is made from water and silane by using acid or base as a catalyst, and biologically active agents in said biodegradable carrier are infecting and/or transfecting viruses. Silica xerogel material can be pharmaceutically acceptable and it can be used as a medicine. | 04-23-2009 |
Pirjo Ahola, Espoo FI
| Patent application number | Description | Published |
|---|---|---|
| 20100324160 | Composite Containing Modified Hybride Resin Based on Natural Fatty Acids - The invention relates to natural fatty acid based hybride resin, modified with reactive monomers, and to a method for preparing it. The invention also relates to the use of the modified natural fatty acid based hybride resin as binding agent especially in water based coatings, glues and composites, and as environmentally friendly wood impregnating agent. The modified natural fatty acid based hybride resin comprises the condensation product of natural fatty acid or natural fatty acid ester, modified with di- or oligo-carboxylic acid or anhydride or half ester, and natural fatty acid based alkyd resin. | 12-23-2010 |
Tarja Ahola, Turku FI
| Patent application number | Description | Published |
|---|---|---|
| 20100304412 | METHODS FOR DETERMINING THE RISK OF PRENATAL COMPLICATIONS - The disclosure relates to methods, medical profiles, kits and apparatus for use in determining the risk that a pregnant individual has for developing pre-eclampsia based on amounts of certain biochemical markers in a biological sample from the individual and biophysical markers. The disclosure also relates to methods, medical profiles, kits and apparatus for use in determining the risk that a pregnant individual is carrying a fetus having a chromosomal abnormality based on amounts of certain biochemical markers in a biological sample from the individual and biophysical markers. | 12-02-2010 |
Tom Ahola, Helsinki FI
| Patent application number | Description | Published |
|---|---|---|
| 20090179628 | Detection of lightning - A lightning detector for lightning detection and a lightning detection method, wherein the lightning detector uses at least two separate channels or frequency bands for lightning detection, and wherein the lightning detector is a mobile RF device provided with radio interfaces for at least two communication channels or frequency bands, whereby at least one of which is normally a telecom channel/frequency range and wherein these channels/ranges are used in lightning detection. | 07-16-2009 |
| 20100285849 | Method and Apparatus For Staged Approach Transient RF Detection And Sensor Power Saving - A method includes receiving a first signal from an antenna of a device and at least one internal device signal in a low-energy consumption path, detecting a peak in at least one of the first signal and the at least one internal device signal, and activating a higher energy consumption path to analyze the first signal when the detected peak is not in one of the at least one internal device signal. | 11-11-2010 |
Tom Mikael Ahola, Helsinki FI
| Patent application number | Description | Published |
|---|---|---|
| 20100121834 | Method and Apparatus for Quality Ranking of Media - In accordance with an example embodiment of the present invention, an apparatus comprises a processor configured to determine at least one quality parameter for a media, assign a value to each quality parameter of the media, calculate a quality score for the media based at least in part on the value for each quality parameter, receive a search request, and transmit search results based at least in part on the quality score of the media. | 05-13-2010 |
| 20110066717 | METHOD AND APPARATUS FOR TIME ADAPTATION OF ONLINE SERVICES TO USER BEHAVIOR - An approach is provided for time adaption of online services. Timing information relating to usage by a user of one or more online services is retrieved. A pattern of consistent usage is determined from the timing information. Scheduling information is generated for transmission of a message based on the determined pattern. | 03-17-2011 |