Abstract: A relocatable Managed Pressure Drilling system adapted to be operatively connected to an oil rig and comprising: a base; a tank secured to the base and adapted to contain gases used in Managed Pressure Drilling operations; optionally, a manifold secured to the base and operatively connected to the tank and adapted for use in Managed Pressure Drilling operations when connected to an oil rig; wherein said base is adapted to move from a first location to a second location on an oilfield without the use of a crane or picker.

Abstract: A relocatable Managed Pressure Drilling system, said relocatable Managed Pressure Drilling system adapted to be operatively connected to an oil rig and comprising: a base; a tank secured to the base and adapted to contain gases used in Managed Pressure Drilling operations; optionally, a manifold secured to the base and operatively connected to the tank and adapted for use in Managed Pressure Drilling operations when connected to an oil rig; wherein said base being adapted to move from a first location to a second location on an oilfield without the use of a crane or picker.

Abstract: A handheld exercise device having two pairs of opposing handles that are coupled by resilient members that provide tension to moving one pair of handles away from each other and to moving the other pair of handles towards each other. One pair of the handles are hingedly attached to the resilient members and the other pair are fixedly attached. The exercise device is portable and can be disassembled by detaching at least one pair of the handles from the resilient members.

Abstract: A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped base to increase gain. Transistors are combined at a first level to form transistor arrays, which are combined with bonding wires at a second level to an output micro strip transmission line. A Vbe referenced bias circuit may include a smart function to lower quiescent current.

Abstract: A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped base to increase gain. Transistors are combined at a first level to form transistor arrays, which are combined with bonding wires at a second level to an output micro strip transmission line. A Vbe referenced bias circuit may include a smart function to lower quiescent current.

Abstract: An RF amplifier comprises a power amplifier and a dual bias circuit. A dual bias circuit comprises a constant current source and a constant voltage source for biasing the power amplifier. The power may include a heterojunction bipolar transistor (HBT) or a bipolar junction transistor (BJT).

Abstract: An intermediate rail, also known as a day/night rail, for placement between the phases of pleated window shade that has at least two distinct phases. The intermediate rail has a fingertip recess running substantially along the entire length of the rail. Additionally, the fingertip recess is sufficiently wide to enable a user's fingers to enter the recess in order to grip the rail so that the rail may be moved.