Abstract: An assured flow conduit has an inner conduit having an inner diameter sized to accommodate a flow of warm fluid and an outer diameter. The inner conduit is formed from a material having a low hydrogen content. An outer conduit encloses the inner conduit and has an inner diameter larger than the outer diameter of the inner conduit and defines a space there between. An insulating sleeve is interposed between the inner conduit and the outer conduit and within the space, wherein the sleeve is formed from an aerogel.

Abstract: A parallel pole magnetohydraulic circuit breaker, having a single trip element and a pair of trip mechanisms, achieving an increased current carrying capacity with reduced nuisance trips. The trip mechanisms are contained within separate housings, with electrical connections and multipole trip mechanism communicating through apertures in the common wall. Preferably, the armature of the trip element acts on a single trip mechanism, which multiplies the available force to trigger a trip of the other trip mechanism.

Abstract: A mid-trip stop circuit breaker, having a handle, adapted for displacement about an axis of rotation between a first position and a second position, the handle being linked to a member whose position corresponds to a rotation position of the handle, a spring urging the handle toward the second position; a stop surface, displaceably supported in relation to the axis of rotation, the stop surface being selectively disposed along a path of the member at a middle position of a transition path from the first position to the second position, and being adapted to engage the member and counter a force of the spring, to retain the handle in the middle position of the transition path, such that a sufficient manual force applied to the handle when retained at the middle position of the transition path will displace the stop surface, allowing the handle to achieve the second position, while in an absence of the sufficient manual force and under influence of the spring alone, the stop surface impedes displacement of the h

Abstract: A circuit breaker includes a coil arrangement for actuating an armature to open the breaker. To prevent false tripping during high transient currents drawn by a load, the coil arrangement has first and second coils, electrically connected in series. The second coil is interposed between the first coil and the armature and is wound in an opposite direction from the first coil to produce an opposing field.