A test projectile comprises a primary nose fuze, a parachute recovery payd including a test fuze, and means comprising two independent firing trains made up of connected flash passages and detonators connecting each fuze with an explosive charge for separating the payload from the projectile body when either of the two fuzes is selectively actuated during flight of the projectile. In one embodiment, the explosive charge comprises a plurality of detonators arranged to rip the forward wall or skin...

A test strip has a reagent-containing film layer coating embedded at least preponderantly on and into only one side of a carrier layer made of a multifilar fabric or fleece.

The invention provides apparatus to inspect the colored insulation on wires placed in equipment to add contacts or to mould a termination on the wires. The apparatus ensures that the correct color relationships are present before crimping or moulding and disarms the equipment until this correct relationship is established. The equipment can be operated only after the relationship has been established.

A tack measuring device and method wherein two specimens are brought into abutting contact under a predetermined load, after which the contact is maintained momentarily. The specimens are then separated within a second time interval. A load cell measures the force as a function of time and the tack is measured in terms of velocity times the force integrated over the second time interval.

A test set designed for testing meter reading units as well as telephone line connections for automatic utility meter reading systems. The test set is capable of simulating the meter reading apparatus when testing the telephone line and of simulating the telephone line when testing the meter reading components. The test set further simulates the receiving apparatus in the central office to test the combination of the meter reading apparatus and the telephone line. The test set is self powered by...

A subsurface test tree so compact in its vertical dimension that the entire tree can be positioned below the blind rams in a blowout preventer stack. When the stinger is removed the remaining valve section of the tree will be below the blind rams in any conventional blowout preventer stack. The valve operators are split, one carried by the stinger and one carried in the valve housing with the arrangement of operator and valve in the housing providing an extremely small vertical dimension. A dome...

A test counter for testing demand recorders installed at remote field locations. A predetermined interval of time is established and pulses generated by an attached demand recorder are automatically counted for that interval of time. The counter includes multiple counting channels and an additional channel providing a visual indication of the presence of pulses at an input of that additional channel.

A test probe has a housing that releasably receives a plunger that is normally urged out of the housing by a spring, and which has a probe contact end normally lying external of the housing. The plunger has a compressible enlargement that normally engages a stop on the housing, but with sufficient force being exerted, may be removed from the housing.

A test kit for preparing a chemical test pad used in testing for the presence of occult blood in a specimen. The test kit is a foil package enclosing an absorbant pad bearing a peroxygen agent and a solution of guaiac in alcohol in a separate packet or compartment from the absorbant pad. The separate packet or compartment being rupturable by applying hand pressure to the outside of the foil package to mix the peroxygen agent powder on the test pad and the guaiac solution prior to removing the ab...

A zero insertion force burn-in and test socket is disclosed which employs a vertically moving top to open and close contact pins which maintain electrical contact with the leads of a surface-mount electronic device package. The socket has a replaceable tray to adapt the socket to various sizes of packages. Horizontal movement of the contact pins is caused and controlled by vertical movement of the top of the socket device.