Abstract: The present invention relates to a measurement-while-drilling (MWD) tool having a pressure compensation system and reservoir segregated from fluid integration with actuator mechanism lubricants. The MWD tool can also be serviced on the rig floor without the need to drain, reseal and charge the compensation system.

Abstract: The present invention relates to a measurement-while-drilling tool [2] with a mechanically driven poppet [216] which eliminates the flow of drilling fluid through the tool, and reliance on surface supplied hydraulic force to activate the poppet [216]. The present invention eliminates the pilot valve system, and generates a fluid pulse from a direct drive relationship between a reversible motor [414], actuator [300], and poppet valve [216]. A pulser [200] has a push rod [214] slidably located inside. Poppet [216] is located on the push rod [214]. Actuator [300] is connected to the pulser [200], and has a ball screw [334] mechanically connected [330] to the push rod [214]. An electric motor [414] and gear train is operatively connected [338] [340] [342] to the ball screw [334]. Motor [414] generates linear movement of the poppet [216] in relation to an orifice [112] to restrict flow and generate a pulse.

Abstract: The present invention relates to a measurement-while-drilling (MWD) tool having a pressure compensation system and reservoir segregated from fluid integration with actuator mechanism lubricants. The MWD tool can also be serviced on the rig floor without the need to drain, reseal and charge the compensation system.

Abstract: This bead snaps onto the hair instead of having to use a tool or to thread each bead individually. A one-peace barrette appears on the hair as if it is three or four individual bead.

Abstract: A communication device for pets and pet owners including a collar adapted for be positioned around a neck of a domesticated animal. A first communicator is coupled with the collar. The first communicator is equipped with a speaker and a two-way open microphone. A second communicator is adapted for being held by a pet owner. The second communicator is in communication with the first communicator. The second communicator consists of a housing. The housing includes a speaker/microphone disposed in a front face thereof. The speaker/microphone includes a first control button and a second control button. The first control button allows the pet owner to speak to the animal through the speaker of the first communicator. The second control button allows the pet owner to listen to the animal through the two-way open microphone.