The invention provides a needle protector for a device incorporating a needle comprising at least one arm mounted or mountable at or generally adjacent to a hub, or blunt end of the needle, and hinged or articulated so as to be capable of folding along the needle such as to shield and protect the tip thereof, and being positively securable in that folded disposition.

A spacecraft having a plurality of concentric balloons (1a,1b), 1c) as protection means, wherein inside the innermost balloon (1c) is located a spacecraft (2) or living facility for human being, together with adequate gaseous material favorable for such equipment or human activity. The outer balloons having progressively lower gas pressures. The multiple balloon system has improved degree of protection against cosmic vacuum environment, improved degree of prevention of escaping of material, with...

My invention provides a reusable cushioned pad with extending tapes for securing the pads to a person. The extending tape means are provided with self securing holding means when the tapes are overlapped and pressed together. The tapes are released from holding condition by separating the tapes and may be repeatedly used to secure the pads to a person without deterioration of the holding quality of the holding means. Secured at the ends of the tapes are tabs that are adapted to repeated use to o...

A protection circuit for a monolithic integrated circuit in which regions of one conductivity type are formed in a common substrate of complementary conductivity type and in which a first voltage is applied to the substrate to prevent forward conduction through the junctions formed between the regions and the substrate. The protection network includes a control element, responsive to the first voltage, which is connected between a second voltage point and selected regions for coupling the voltag...

A sun protection consisting of at least two frame-type supporting beams. The beams are formed of respectively one cross beam and two lateral beams adapted to be put together, with mounting ears. These ears are provided at the bottom ends of the lateral beams which ears are seated on respectively one bolt of a clamp holder provided with a clamping element.

A protection circuit is provided which incorporates a reed relay whose contacts form the circuit breaker of an electrical appliance. The winding of the reed relay is supplied with a rectified alternating current derived from a current transformer coupled to the supply line to the appliance. In order to avoid periods of zero current in the winding, the winding is also supplied with a rectified alternating current from a source which is out of phase with that supplying the supply line. Failure of ...

A surge protection circuit for repeaters in a co-axial telecommunications cable where the power supply is through the cable conductors includes a cold-cathode discharge tube connected so as to provide a discharge path, when a surge occurs, for a capacitor through the power tapping resistor so that the discharge current through the power tapping resistor is in opposition to the normal current through the resistor.

Protection apparatus (15) for use with universal drive shafts (13) and including a sensor (16) mounted in spaced relationship relative to the shaft (13) and actuated when the shaft undergoes a predetermined degree of movement beyond its normal attitude, actuation of the sensor causing drive to be removed from the drive shaft (13) and/or generation of a warning signal.

To protect a transistor its emitter current is converted by a resistor into a voltage which by means of a voltage-current converter is converted into a current which is proportional to the emitter current. The collector-emitter voltage is converted by means of a voltage-current converter into a current which is proportional to the difference between a knee voltage which is applied to the converter, and the collector-emitter voltage, the converter not producing an output current for collector-emi...

A window unit comprising a frame and at least one window member slideable vertically in the frame, each window member having a window pane covered on the outside by a sheet of expanded metal spaced apart from the window pane.