Alpo
Alpo Hypponen, Viiala FI
Patent application number | Description | Published |
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20090044431 | Ventilated Shoe or Insole - A ventilated shoe or insole having a uniform and continuous air channel extending from the heel portion of the sole portion or insole to the toe portion and opening, at the rear end thereof, into the air space outside the shoe or outside the insole, and at the front end thereof, into the inside of the shoe or onto the upper surface of the insole. According to the invention, the air channel is a channel formed by an elastic supporting structure and having a substantially standard cross section that as the stepping motion proceeds, closes tightly phase by phase substantially along the entire stretch thereof under the weight of the foot for transferring air according to the hose pump principle from outside of the shoe or insole into the inside of the shoe or into the upper surface of the insole along the air channel. | 02-19-2009 |
Alpo Kaulio, Helsinki FI
Patent application number | Description | Published |
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20100226153 | METHOD AND ARRANGEMENT IN CONNECTION WITH HALF-CONTROLLED NETWORK BRIDGE - A method and an arrangement for controlling phase-specific thyristors of a half-controlled network bridge. The method comprises the steps of identifying continuously a thyristor to be controlled on the basis of magnitudes of supplying phase voltages; controlling the thyristor by enabling a current flow to its gate current circuit through an inductive component of a constant current regulator, which constant current regulator is common to all the gate current circuits, the thyristor control comprising the steps of determining a magnitude of the gate current at the potential of the gate conductor in the constant current regulator, alternately switching the voltage producing the gate current off from the gate current circuit when the gate current is higher than a predetermined limit, and switching the voltage producing the gate current on in the gate current circuit when the gate current is lower than a predetermined limit. | 09-09-2010 |
Alpo Toivo, Helsinki FI
Patent application number | Description | Published |
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20130090502 | PROCESS FOR MANUFACTURE OF LIQUID FUEL COMPONENST FROM RENEWABLE SOURCES - A method for producing liquid fuel components from renewable oil. A fresh feedstock including saturated fatty acids is subjected to dilution by an organic lipophilic solvent. The solvent has a low phosphorus and metal impurity content, less than 5 ppm and less than 10 ppm, respectively. Dilution is performed before and/or during purification by at least one pretreatment process for removal of phosphorus and metal impurities. Subsequently, the resulting purified feedstock is fed into at least one post-treatment process suitable for producing liquid fuel components. | 04-11-2013 |
Alpo Vallinmaki, Mukwonago, WI US
Patent application number | Description | Published |
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20150253359 | DC BUS VOLTAGE MEASUREMENT CIRCUIT - A voltage measuring device includes an input configured to be coupled to a secondary of an inductive coupling of a DC to DC voltage converter. A switch coupled to the input forms a discharge path parallel to a sampling capacitor dependent on the voltage at the input equaling or exceeding a first voltage threshold and independent of an output voltage at the output of the device. The sampling capacitor is coupled to the output. A rectifier in series with the sampling capacitor is biased to conduct upon the input voltage, minus the output voltage, equaling or exceeding a second voltage. | 09-10-2015 |