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Hristov
Hristo Hristov, Sofia BG
| Patent application number | Description | Published |
|---|---|---|
| 20090134824 | BLDC MOTORS - A 2-phase BLDC motor is driven by a trapezoidal waveform. For one-half of the motor rotation period T, the phase is driven by the trapezoidal waveform and for the other half-period, the coil remains undriven. Accordingly, if the optimum slope duration is around 10% of the duration of the driven portion, then it is of the order of T/20. An up down counter is operable to increment at a first frequency f | 05-28-2009 |
Hristo Dimitrov Hristov, Shumen BG
| Patent application number | Description | Published |
|---|---|---|
| 20080257709 | Method and Equipment for Whole Tyre Pyrolysis - The method and equipment are intended for application in the chemical industry for destruction off solid substances, containing carbon and hydrocarbons. The invention guarantees absence of oxygen in the reactor and permits increased thermal efficiency. The closed forehearth is used to preheat every tyre that follows. The technologic comfort is due of use of spark proof material for the internal space of the forehearth; off the use water-cooled rollers ( | 10-23-2008 |
Ivan Hristov, Zug CH
| Patent application number | Description | Published |
|---|---|---|
| 20100083651 | Circuit for controlling a double-action hydraulic drive cylinder - Circuit for controlling a double-action hydraulic drive cylinder includes a directional control valve having working ports A and B, a pump port P, and a tank port T, wherein the directional control valve has a neutral position in which pump port P is blocked and working ports A, B are connected to tank port T. A pressure-limiting valve and a controllable load-holding valve are connected to the piston space in parallel, and a regeneration check valve is connected in series between a connection point for the parallel components and the rod space. A first precharge valve is connected between the working port A and the connection point, and a first bypass check valve is connected anti-parallel parallel with the first precharge valve and the load-holding valve. A second precharge valve is connected in series with the directional control valve between the tank port P and the rod space. | 04-08-2010 |
Krasimira Hristov, Hamburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20080281338 | Surgical Suture System - A surgical suture system ( | 11-13-2008 |
Luben Hristov, Sofia BG
| Patent application number | Description | Published |
|---|---|---|
| 20080246496 | Two-Dimensional Position Sensor - A two-dimensional position sensor is formed by drive electrodes ( | 10-09-2008 |
| 20100164889 | MULTIPLE ELECTRODE TOUCH SENSITIVE DEVICE - Two different sets of electrodes in a touch sensitive device are formed to produce an electric field gradient from one end of the electrodes to the other end when opposite ends of the electrodes are driven with different voltages. A signal measuring cycle is performed by alternately driving the ends of one set of electrodes, while using the other set of electrodes to receive signals. The roles of the sets of electrodes are then reversed, such that the set that that was driven is now used to receive signals from the other set of electrodes. Reference signals may be obtained by driving both sides of one set of electrodes, and then both sides of the other set of electrodes. The signals obtained are then used to determine the touch position on the touch sensitive device. | 07-01-2010 |
| 20100321043 | TWO-DIMENSIONAL POSITION SENSOR - A two-dimensional position sensor is formed by drive electrodes ( | 12-23-2010 |
| 20110050620 | METHODS AND APPARATUSES TO TEST THE FUNCTIONALITY OF CAPACITIVE SENSORS - Some embodiments include apparatus and methods to test a device having a driving layer and a sensing layer. A test signal is applied to electrodes of the driving layer in a capacitive load state, with a capacitive load applied, and in an ambient state, without a capacitive load applied. Measured values are obtained at the sensing layer for each state. The measured values are compared with threshold values. A report is generated when a measured value violates a threshold. In one embodiment, the driving layer and the sensing layer form multiple capacitive electrodes within a touch sensor. The measured values are related to mutual capacitance values of the touch sensor. | 03-03-2011 |
Luben Hristov, Southampton GB
| Patent application number | Description | Published |
|---|---|---|
| 20110018841 | Two-Dimensional Position Sensor - A capacitive position sensor for determining the position of an object along first and second directions is described. The sensor comprises a substrate having an arrangement of electrodes mounted on a single surface thereof. The electrodes are arranged so as to define an array of sensing cells arranged in columns and rows to form a sensing area. Each of the sensing cell including a column sensing electrode and a row sensing electrode with the column sensing electrodes of sensing cells in the same column being electrically coupled together and the row sensing electrodes of sensing cells in the same row also being electrically coupled together. Row sensing electrodes of sensing cells at opposing ends of at least one of the rows are connected together by an electrical connection made outside of the sensing area so that there is no requirement for electrical connections to cross within the sensing area, thus providing a capacitive position sensor having a sensing area with electrodes on only one side of a substrate. | 01-27-2011 |