Abstract: A pressure differential bypass sensor switch with thermal lockout that utilizes change in position of a permanent magnet carried by a reciprocable piston responsive to pressure differential in a fluid system to actuate a magnetically actuatable electrical switch. Opposite sides of the reciprocable piston are exposed, respectively, to high pressure and low pressure sides of a filter located in a fluid circulating system. The reciprocable piston is normally positioned at the high pressure side of a passage in which it reciprocates, due to biasing by a spring acting on it from the low pressure side of the passage. As the filter becomes clogged, the pressure differential across it and, therefore, across the reciprocable piston will increase. The bypass sensor is calibrated so that a maximum allowable pressure differential in the fluid system will drive the reciprocable piston to the low pressure side of the passage.

Abstract: A terminal module provides for attaching components to terminals of a terminal frame. The terminal module utilizes an integral printed circuit board having a component assembly potted within a rectangular plastic shell with the remaining portion of the printed circuit board protruding from the shell for use as electrical terminals and for physical attachment to screw terminal strips of the termination frame. The modules are suitably of a predetermined geometric configuration, and the potted component assembly portion is contoured to fit between respective ones of stacked terminal strips.

Abstract: The invention relates to a casing, particularly a junction box casing (1) for telecommunications engineering, consisting of a box-shaped base (24), a cover (9) to close this, and a packing ring (14). According to the invention, upper and lower guide elements (2, 25) are provided, each of which consist of a pin (8, 13) on the inner sides of the side walls (27) of the cover (9) and of a pin guide (36, 37) on the outer walls (26) of the base (24). The pin guides (36, 37) are inclined at an acute angle to the base surface (28) of the base (24) and are directed toward the rear wall (30) of the base (24).

Abstract: In a circuit breaker (1) with a two piece molded housing (30) with a longitudinal mold parting line (33), a retainer (48) is mounted to the housing and has a bore (50) extending parallel to the parting plane for receiving a screw (58) which mounts a filler plate (52) covering open areas adjacent the breaker.

Abstract: A switch is responsive to fluid flow within a conduit. It is highly sensitive to variations in flow and forms an effective seal between the fluid and atmosphere. It includes a plastic pivot ball in a spherical seat. A blade extends from the pivot ball into the conduit where it can be displaced by fluid flow to rotate the ball. A lever is eccentrically connected to the pivot ball and extends upwardly within a closed, non-magnetic, housing. The upper end of the lever carries a magnet which actuates a switch outside the housing. An adjustable spring between the top of the lever and the housing permits adjustment of the sensitivity of the response.

Abstract: An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the circuit breaker cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit.

Abstract: A flow switch valve including a housing main body comprising a plurality of valve casings stacked contiguously and each having a fluid flow channel and a valve seat member, a valve member passing slidably through said valve casings and having valve bodies corresponding respectively to the valve heat members of the valve casings, a diaphragm disposed to any of the valve casings and supporting the valve member, and a signal generation device for detecting the position of the valve member in the housing main body and generating a detection signal. The valve member moves slidably depending on the change of the fluid pressure in the chamber partitioned by a diaphragm, by which valves for the fluid flow channels in the plurality of valve casings are opened or closed interlocking therewith and, at the same time, a detection signal for the position of the valve member is generated.

Abstract: A logic driver having control circuitry for receiving an input bistate data bit and providing power at an output at first and second predetermined voltage levels when an input bistate data bit is respectively of first and second states. Sensing circuitry is coupled to the control circuitry for detecting the level of current at the output and providing a corresponding current level indication. The driver further includes overcurrent circuitry, responsive to the current level indication, for generating an overcurrent command when the output current exceeds a predetermined level. The control circuitry is responsive to the overcurrent command for disabling the output of power at the corresponding predetermined voltage level at the output.

Abstract: A cooling system including a cooling module which has a heat transfer plate that is exposed to a flow of coolant and is elastically biased toward a circuit component on a printed circuit board for transferring heat dissipated by the component to the coolant, and means for guiding and preventing improper alignment of the transfer plate as the same is resiliently biased toward the circuit component. The coolant module may include a solder or low-melting-point metal for establishing thermal contact between the transfer plate and the circuit component.

Abstract: A fluid controlled actuating device is described which facilitates rapid and controllable actuation of devices adapted for momentary actuation.

Abstract: A printed circuit board heat sink retainer is disclosed comprising a mating pair of sawtoothed bars with slidably engaging teeth. The bars are laterally spread apart and held by a forcing device, which may be a screw or a spring, in order to push against and hold a heat sink in a channel. The distance between successive teeth may be constant in both bars or may be constant in one bar and may decrease in a direction toward the forcing device in the second bar.

Abstract: A switching device with a normally open electrical condition which engages contacts in response to a rise in fluid pressure for the purpose of activating an associated electric powered device such as a fuel pump in an automobile when pressures are much greater than zero.

Abstract: In one embodiment, the mercury float switch includes a sealed, partially mercury filled bent tube having two contact leads extending from one end. A shroud of plastic, injection molded material covers the portion of the tube where the two contact leads extend. The shroud is formed to have two opposing pivot arms extending therefrom. Each pivot arm encapsulates a respective lead. Connecting wires are electrically connected to each contact lead and the insulation surrounding the connecting wires is also encapsulated within a corresponding pivot arm. A foamed plastic, buoyant body completely encapsulates the tube as well as the shroud except for the ends of the pivot arms. This buoyant body is retained in a housing structure which has journals on opposing walls thereof which retain the pivot arms and allow the bouyant body pivot assembly to rotate freely on the pivots. The housing structure limits the rotational movement of the buoyant body.

Abstract: Disclosed in a thin type electronic instrument having a structure comprising a circuit base plate for mounting an integrated circuit chip thereon and a power source battery for supplying power to the circuit base plate sandwiched between a pair of synthetic resin sheets opposed to each other, with the pair of synthetic resin sheets being plastered at the peripheral portions thereof, characterized in that a substrate made of a metal is interposed between the pair of synthetic resin sheet.The thin type electronic instrument of the present invention is improved in mechanical durability against mechanical shock such as warping or torsion by a stress during carrying or usage, whereby erroneous actuation or breaking can be inhibited.

Abstract: A plurality of thin flat parallel positioned thermal conductive fins adapted to be connected to an object and a gas passageway passing between adjacent fins and extending between the top of the fins and opposite sides. Gas guides are positioned between adjacent fins at the center of the plurality of fins and redirect the outlet end of the pasageways normal to the inlet ends of the passageways. Alternately positioned fins face in opposing directions. The fins may be integrally formed or individually formed. A thermal conductive base may be provided at the bottom of the plurality of fins for connection to an electronic package.

Abstract: A ventilated, splash-resistant electrical component housing assembly adapted to allow free flow of air throughout the housing assembly in order to provide cooling of electrical components therein. A main housing body (2) having a plurality of openings (12) along with means to retain electrical components (4) with the main body is disclosed. A top cover (30) having exterior notches (42) and an interior wall (46) with interior notches (48) is attached to the main body (2) and a bottom cover (14) having vent channels (19) is secured to the main body (2) in order to shield the electrical components and simultaneously to allow the free flow of air throughout the housing assembly.

Abstract: A system for use with electrical machines allows fast transfers to be made from one power source to another or fast reconnections to be made to a momentarily interrupted power source without subjecting the machines to unsafe voltage levels. The system short circuits the electrical machines to bring their residual voltage down quickly to a level at which the machines may be safely connected to a power source, and works with both induction and synchronous machines. No interlocking devices are necessary to the system, thus further speeding up fast transfer while minimizing the effects of inadvertent direct short circuiting of the power source.

Abstract: An equipment enclosure comprises a frame together with a top panel, two side panels, front and rear panels, and front base and rear base panels. The side panels are held to the frame using studs which engage recesses in the frame. The top attached cover rests on a top face of the frame and engages the studs to position the side panels relative to the frame. Front and rear panels are affixed respectively to a front edge and a rear edge of the top panel and affixed at their respective lower ends using the front base panel and the rear base panel. The tolerances are such that outside dimensions of the enclosure are entirely defined by the material engagement between the panels.

Abstract: A ceramic card assembly which provides high density three dimensional semiconductor device packaging and overcomes the power distribution and thermal management problems that have impaired prior ceramic cards. The ceramic card assembly combines ceramic cards with flexible power distribution structures which provide low inductance and low resistance power distribution, making ceramic cards available for high performance VLSI systems. Each ceramic card assembly comprises a ceramic card having a plurality of chip sites and power contacts thereon, and at least one flexible power distribution structure having alternating insulation (i.e. polyimide) layers and conductor (i.e., copper) layers, the flexible power distribution structures are mounted adjacent to the ceramic cards so that conductive layers of the ceramic cards are selectively exposed to the power contacts. The ceramic card assemblies are preferably combined into a field replaceable unit that includes cold plates between ceramic cards.

Abstract: A radiant space heating element (12) in the shape substantially of an equilateral triangle for providing uniform distribution of heat by radiation from an interior space (32) that is a passage for an energy source such as hot water, steam, hot stack gases or any other source of infrared energy. The heating element (12) has two radiating surfaces which meet at a vertex (20) so that there is a substantial uniformity of temperature over an area on either side of a line directly under the heating element which is nearly equal to five times the separation of the heater element from the surface. The heating element (12) has insulation (14), a web element (36) that acts both to support the insulation (14) and as a reflector, and a bracket (16).