Jerabek

Al Jerabek, Houston, TX US

Patent application number	Description	Published
20110017473	SLIP RING APPARATUS FOR A ROTARY STEERABLE TOOL - A downhole tool includes a slip ring assembly deployed radially between a shaft and a housing. The slip ring assembly may be configured as a stand-alone assembly and is further configured to provide a plurality of distinct electrical communication channels between the shaft and housing. These communication channels are suitable for transmitting electrical power and/or electronic data. Electrical connection is made between the housing and the slip ring assembly via a connector block that is fastened to a plurality of stator rings in the slip ring assembly. The connector block extends radially outward from the stator rings and physically engages an opening in the housing thereby rotationally coupling the stator rings to the housing.	01-27-2011

Patent application number	Description	Published
20110083949	SWITCHING DEVICE - A switching device includes a switching appliance, a cap, at least one connecting device for firm connection of the switching appliance to the cap, and a monitoring device. In at least one embodiment, the monitoring device includes a sensor and a tripping element, whose position is variable after connection and which, when the switching appliance is ready to operate, is located in a position in which the tripping element can be detected by the sensor, the monitoring device further including a signal unit which is connected to the sensor and is used to signal operational readiness once the sensor has detected this.	04-14-2011

Patent application number	Description	Published
20100156499	LOGIC LEVEL CONVERTER - A logic level converter includes two first electronic switches coupled in a bi-stable flip-flop arrangement having at least one output line, and a forcing circuitry including two second electronic switches to force switching of the first electronic switches in the flip-flop arrangement. The forcing circuitry has an input terminal to receive a logic input signal having a given level to produce switching of the flip-flop arrangement and generate at the output line(s) of the flip-flop arrangement, a logic output signal(s) whose voltage level is converted with respect to the level of the logic input signal. The converter includes, interposed between each of the two first electronic switches in the flip-flop arrangement and a respective one of the second electronic switches in the forcing circuitry, at least one respective cascode electronic switch to limit the voltage across the two first electronic switches in the flip-flop arrangement.	06-24-2010