Abstract: An apparatus for pipeline isolation comprising a pipeline isolation tool (1) having a cylindrical vessel with locking grips (21) and sealing member (19) encircling the cylindrical vessel. The locking grips (21) and sealing members (19) are operable by a hydraulic piston (10) contained within a core of the cylindrical vessel and a hydraulic pump for operating the piston (10). The piston (10) is a double rodded acting piston (10) comprising an elongated shaft and a head centrally located on the shaft so that the volume swept by the piston (10) is equal in both directions. A control module (32) is connected to the isolation tool (1) at one end and a gauging tool (33) is connected to the other end of the isolation tool (1).

Abstract: Compositions and methods useful for determining whether a subject has an alteration in a gene encoding a protein chain of Type I or Type IX collagen are described. Novel intronic sequences of five human genes, COL1A1, COL1A2, COL9A1, COL9A2, and COL9A3 are described. Methods of determining the existence in a subject of a pathological condition associated with an altered gene encoding a Type I or Type IX collagen protein chain are provided, wherein such pathological conditions include diseases and disorders which are known to be associated with an altered gene encoding a Type I or Type IX collagen protein chain. Primers, probes, and methods of detecting a genetic predisposition of a subject for a pathological condition associated with an altered gene encoding a Type I or Type IX collagen protein chain are provided.

Abstract: A residual current circuit breaker 1 has a partition wall 3 which separates an over-current protection device 4 from a residual current detection circuit 5. A plunger rod 24 extends through a bore 23 in the armature 21 of a coil 20 and is moved independently through the coil 20 to trip the breaker if a residual current is detected by the circuit 5. The plunger rod 24 is moved by a drive rod 31, the operation of which is controlled by a permanent magnet which retains the drive rod 31 retracted and an electromagnet which allows the drive rod 31 to drive forwardly under the action of a spring 32 in the event of a residual current being detected. The plunger rod 30 is reset by a reset lever 40 which is moved when an operating handle 18 of the breaker moves from a non-tripped to a tripped position on tripping of the breaker.

Abstract: A method of manufacturing a circuit breaker comprises the steps of preassembling the movable parts of the circuit breaker between a pair of frame members and providing a housing that is configured for supporting the unitary breaker assembly without attachments. Other circuit breaker components, attached to the unitary breaker assembly, are also supported in the housing without attachments. A cover is secured to the housing to complete the circuit breaker. Another version of the invention preassembles the movable parts of the circuit breaker and the stationary contact mechanism and trip coil, with the line and load terminals attached, between a pair of supporting frame members to form an operable circuit breaker module. The module is in turn supported in a housing without attachments. The circuit breaker module may be tested and adjusted prior to final assembly.

Abstract: A method of manufacturing a circuit breaker comprises the steps of preassembling the movable parts of the circuit breaker between a pair of frame members and providing a housing that is configured for supporting the unitary breaker assembly without attachments. Other circuit breaker components, attached to the unitary breaker assembly, are also supported in the housing without attachments. A cover is secured to the housing to complete the circuit breaker. Another version of the invention preassembles the movable parts of the circuit breaker and the stationary contact mechanism and trip coil, with the line and load terminals attached, between a pair of supporting frame members to form an operable circuit breaker module. The module is in turn supported in a housing without attachments. The circuit breaker module may be tested and adjusted prior to final assembly.

Abstract: An assembly frame having first and second frame plates secures the movable parts of a breaker assembly together for ready assembly of the breaker assembly in a housing. A pivot pin supports the trip lever between the frame plates. The movable contact carrying blade has an elongated hole through which the pivot pin passes, the elongate hole forming a floating point for the pivot pin.

Abstract: An assembly frame having first and second frame plates secures the movable parts of a breaker assembly together for ready assembly of the breaker assembly in a housing. A pivot pin supports the trip lever between the frame plates. The movable contact carrying blade has an elongated hole through which the pivot pin passes, the elongated hole forming a floating point for the pivot pin.