An integrity indicator formed as an illuminable bead is combined with the pair of flat terminal blades of a miniature plug-in fuse and is positioned in a central window provided in the top wall of the insulator housing thereof. The housing defines a chamber having an open bottom and a central section with relatively narrow lateral sections in which upper portions of the blades are secured. A fuse-wire extends across the central section conductively interconnecting the blades. The illuminable bea...

A high integrity, tamper resistant container, preferably comprised of an opaque or transparent, high shear and impact resistant, plastic material. The container has an item insertion access opening. Closing and sealing means for the opening consist of removably covered, pressure sensitive adhesive material, applied on opposed mateable surface portions of the container proximate the access opening. Operative mating of the adhesive material on the mateable surfaces, subsequent to exposure, bonding...

Systems and methods for assessing the effect of at least one of a plurality of forces acting upon a structure. Structural moment detectors, combined with external signal and data-processing components or structural information detectors which are unitary devices which include the signal and data-processing functions, are employed as an integral component of these systems. These systems include basic measurement systems, structural integrity measurement systems, applied structural measurement sys...

A method of and apparatus for testing the integrity of individual filters or filter stages of a multistage filtering system including a diffuser permanently mounted upstream and/or downstream of the filter stage to be tested for generating pressure differentials to create sufficient turbulence for uniformly dispersing trace agent particles within the airstream upstream and downstream of such filter stage. Samples of the particle concentration are taken upstream and downstream of the filter stage...

Connection between flange faces is effected with a rigid metal load bearing ring interposed therebetween for assuming the bolt torquing load and, when desired, for providing a fluid seal. Within said load bearing ring are disposed at least one coned ring spring and a force distributing ring for developing a predetermined sealing force against a flare of non-metallic material, usually a plastic. The flare may be at the end of a pipe or fitting liner or associated with an auxiliary or adapter seal...

The invention is a method of determining whether an adhesively bonded joint between two structural elements meets established strength requirements. The method comprises the following steps: (1) Determining by test the levels of acoustic energy to be directed and/or focused by a transducer 12 on a minute area of the adhesively bonded joint 14 and further the application times thereof. The combinations of directed and/or focused acoustic energy and application time are selected to macroscopically...

Laminated parts of structural material receive as embedment light transmitting fibers, preferably in addition to reinforcing fibers, and light transmission through the light transmitting fibers is monitored for purposes of determining pattern irregularities and formation of cracks.

A valve having integrity assurance means including a valve body with a flow passageway through it, the flow passageway having a circumferential valve seat and the valve body having a small diameter test opening communicating the seat with the exterior of the valve, and having a valve disc with a circumferential sealing surface supported in the body, the disc being rotatable to an open position permitting fluid flow through the valve to either side of the disc and to another position to close the...

Circuitry for integrity verification is provided to prevent a calling party from unknowingly remaining connected to a faulty trunk connection between an automatic switching office and an operator-assisted office. New circuit arrangements are added to the outgoing trunk circuit of the automatic office and to the line circuit of the operator-assisted office. At the outgoing trunk circuit, binary memory elements and associated circuitry are employed to delay the completion of the normally executed ...

A process and apparatus for providing an electrophysiologic indicator of reversible myocardial ischemic injury as well as a procedure and apparatus for providing a method of assessing the status of myocardial preservation during elective cardioplegic arrest in order to assure complete electromechanical arrest from the onset of the application of the standard cardioplegic techniques. The procedure for establishing an indication of reversible myocardial ischemic injury involves implanting multiple...