Abstract: A mechanical shock machine may consist of a small bench-top device with a built-in pneumatic isolator, the working parts of which are enclosed to prevent injury to the operator. The device to be tested is placed on the test platen of the mechanical shock machine and retained there by mechanical clamps or by a viscous fluid. A bullet-like object is then accelerated toward the underside of the test platen, striking it in free or ballistic flight. The strike target contains a resilient pad. Different thicknesses of this pad produce different durations of the shock pulse, with thicker pads relating to longer duration pulses. A skirt near the outer edge of the test platen is suspended in a viscous shock fluid that absorbs the energy of the bullet strike without a major displacement of the test platen, and reduces second strike effects and ringing of the assembly. The motor inducing acceleration to the bullet is contained and its motion captured within the enclosed volume of the shock machine.

Abstract: An electric storage cell which permits control of the output power without substantially increasing the power loss. An electric storage cell combining two conductive electrodes spaced from each other, and an electrolyte between the electrodes capable of generating an electric current. Means are provided for varying the conductive interfaces between the electrodes and the electrolyte. This may be effected either by varying the effective area of the electrolyte between the electrodes, for example by a movable mask disposed between the electrodes, or alternatively, the effective area of the electrodes connected to a load may be varied, for example, by a switch connecting selected electrode strips with the output circuit. The storage cell may be arranged to generate either direct or alternating current, or some other desired wave form.

Abstract: A particle detection system for detecting the presence of a particle within a sealed enclosure. It includes a vibrator or shaker whereon is mounted an electromechanical shocking apparatus whereby an operator-actuated switch causes an armature to provide a physical or mechanical shock to the enclosure. A transducer is employed to sense the noise created by a particle within the enclosure striking a side wall thereof, and suitable indicating means are connected in circuit with such transducer to afford visual and audible indications of the presence of the particle. Means is provided for muting the indicators whenever the enclosure is shocked by the armature to prevent the indicators from responding to the noise created by such shocking.

Abstract: A permissive make double throw electromagnetic switch having maximum efficiency in utilizing electrical energy supplied thereto, though being extremely small and compact for use on printed circuit boards. The means for moving the contact actuator comprises a pivotal armature which carries a permanent magnet and a pole piece whereby the permanent magnet causes the pole piece to be drawn into engagement with the core of an electromagnetic winding to thereby move the armature to a retracted position. Energization of the winding causes the armature to be drawn into attracted position in engagement with the core, the flux path through the armature being directly through the core and other flux-conducting means.

Abstract: A miniature armature relay having a substantially flat header and a cover therefor. Attached to the header is an electromagnetic operator which comprises an electromagnetic winding and a reciprocatable armature therewithin which carries a disc-shaped contactor.Mounting lugs are fixed to the header on opposite sides of the armature, and individually carry a stationary contact to be engaged by the contactor. Alignment means comprising a pair of anchor lugs on opposite sides of the armature, and a flexible member secured to the armature and such anchor lugs is also included. A biasing spring urges the armature to retracted position and the electromagnetic operator overcomes such spring in response to energization of the winding thereof.

Abstract: An electrically conductive moveable support member for use as a contact carrier, contactor or armature support.Such electrically conductive support member is formed of electrically conductive material of sufficient cross section to carry the desired current, and is formed with reverse convolutions which may be interleaved to provide a small, compact, support member. The convolutions are formed about the mid-point of the length of the material, to leave opposite end portions, one of which may be supported to a base member and the other of which is provided with a contactor, armature or the like.

Abstract: A magnetic motor for use as an actuator for devices such as relays, indicators and the like.It comprises an electromagnetic winding having a core member to the opposite ends of which are fastened pole pieces which cooperate with a magnetically movable armature. An additional pole piece as well as a permanent magnet are also provided.One end of the armature is caused to contact or engage one of the pole pieces or, in the alternative, to engage or contact alternatively several different pole pieces. The opposite end of such armature is shaped so as to provide a generally U-shaped air gap with the other pole piece, and the armature is so positioned as to move from one side of coplanar relationship with such other pole piece to the other side thereof.