Abstract: A time delay fuse (10) includes a tubular housing (12) of insulative material with first and second open ends (14, 16). First and second metallic or electrically conductive ferrules (18, 20) are mounted on the first and second ends, respectively, of the tubular housing. A core (24) is positioned within the tubular housing (12) and affixed to the ferrules (18, 20) by electrically conductive material (26) such as solder. At least one short inner wire (28) extends along the core and is electrically and mechanically connected to the solder (26). A second wire (34) longer than the first wire (28) is spirally wound around the core (24) and the first inner wire (28). The second wire (34) includes first and second ends (36, 38) mechanically and electrically connected to the conductive material (26) such that the first and second wires are electrically parallel.

Abstract: A microprocessor based recloser control including a independent memory is disclosed. The independent memory is alterable by processor means and by input and output means independent of the processor means. The independent memory is non-volatile and requires little energy to alter its contents. Events which would otherwise be ignored when the processor means is disabled, because of an insufficiency of power for reliable operation, are recordable in the independent memory.

Abstract: A support bracket assembly for supporting a hollow tubular or channel shaped headrail for venetian blinds and similar window coverings comprising opposed support bracket members having projecting tongue portions which are insertable in supportive relationship within the headrail member. Opposed wall brackets include horizontally projecting support plate portions which are insertable in openings formed in the headrail support brackets and are in engagement with resiliently deflectable fingers on the headrail support brackets for securing the headrail brackets assembled to the wall brackets. Elastically deflectable arm portions are formed on the headrail brackets for engagement with the wall bracket plate portions for urging the headrail brackets toward each other to maintain firm engagement with the headrail.

Abstract: An improved passenger car tire chain employing heat treated medium carbon steel is disclosed. The improved tire chain is approximately twice as durable as that presently furnished to meet NACM-5179(TC) for Type PL chains when AISI 1026 or 1029 carbon steel is employed at least for links of a cross chain meeting the road surface. The cross chain links are closed by welding prepared abutting link ends which have been previously beveled. After being welded closed, the cross chain links are case hardened, quenched, tempered and air cooled. The improved tire chain is then assembled in a conventional manner to include a pair of side members, fastening means to secure a end of each side member to the other end, and a plurality of cross chains extending between the sidewall members at preselected intervals.

Abstract: A housing for holding a lamp socket for use in a recessed lighting fixture includes a bracket member and a mounting flange for both mounting a thermal protective device within the housing and for clamping electrical conduit to the housing. The L-shaped bracket member mounts to the housing at an access hole to clamp the conduit against the mounting flange on the housing and position the thermal protective device in close proximity to the interior wall of the housing.

Abstract: A power screwdriver or nutsetter has an output shaft provided with a torque measuring transducer and a shaft rotation angle transducer mounted thereon. Tool output torque or final turning of a screw or nut can be measured directly and transmitted to a control unit through a shaft mounted slipring assembly. In one embodiment a bevel gear drive is connected to the output shaft and a force measuring transducer is mounted between the shaft and the tool housing for measuring gear reaction forces corresponding to tool output torque.

Abstract: A fuse holder for an indicating fuse has a generally U-shaped body with a pair of spaced flexible electrically conductive side walls extending from a base and forming a cavity therebetween for receiving a fuse. An electrically conductive finger projects from each of the side walls into the cavity at an acute angle. Upon insertion of a fuse, between the free ends of the side walls opposite the base and into the cavity, the fingers are pivoted towards the respective side walls, and the side walls are deformed with the free ends thereof being rotated towards the fuse, such that electrical contact is made with the fuse at four different locations, by the two fingers and the ends of the two side walls.

Abstract: A series pass battery charger is disclosed which comprises at least two input voltage sources, a series pass element and a power dissipation control circuit which is operatively connected to the series pass element. The power dissipation control circuit senses the voltage difference between the input voltages sources and the DC output voltage of the battery charger and controls the voltage applied to the series pass element. During periods of excessive power dissipation, the control circuit decreases the amount of the input voltage applied to the series pass element thereby greatly reducing the power dissipated.

Abstract: A plate lifting clamp has an eccentric cam with spaced apart teeth having sharp crest edges which are provided with slots extending radially into the teeth. Excessive wear on the teeth may be visually observed by the decreasing depth of the slot or disappearance thereof on any one tooth. The tooth crests may be curved in a plane parallel to an axis of rotation of the cam so that a generally elliptical shaped surface appears on the tooth crest as it is worn away. The length of the wear surface may be measured to determine when cam replacement is desirable.

Abstract: A measuring circuit for obtaining a mean square value of a power distribution line paramter and a process for obtaining a mean square value is disclosed. The measuring circuit and process exploit my discovery that an accurate measurement of the mean square may be closely approximated by sampling the power parameter an odd number of times greater than one during the power parameter cycle. When the power parameter is sampled an odd number of times (N) during its cycle aliasing errors due to the existence of odd harmonics above the Nyquist Frequency are minimized. As a result, the means of the most recent N sample values squared is very nearly equal to the true mean square value which would be produced by a continuous integration of the square of the power parameter during its period divided by the period. By sampling at a relatively low frequency, errors and circuit complexity are reduced, and the speed with which an acceptable mean square value is obtained is increased.

Abstract: A drapery support rod assembly including opposed support brackets for supporting the rod at a predetermined distance with respect to a vertical wall and giving the appearance of a continuous rod section extending from the wall at each end. Opposed elongated channel shaped bracket members, inner cover members and outer cover members are preassembled by a threaded fastener and secured to the rod section by tang portions of the bracket members for securing the bracket assemblies to the rod section. The bracket assemblies may be loosely secured, one part to the others and secured to the rod section and then assembled to the wall brackets by a push-on operation. The wall brackets include generally horizontally projecting arm portions with elongated slots formed therein for receiving the assembly of the channel shaped bracket member and the inner cover part.

Abstract: A framing projector providing for alternatively mounting different optical lighting effect elements is disclosed. The projector includes a housing having a low voltage light source mounted to a removeable rear end-cap at the rear of the housing for directing a beam of light through a removeable optical effect element mounted to a removeable front end-cap. The front end-cap is adapted to alternatively mount a framing shutter system, an adjustable iris assembly, or a photographic slide and template holder. An adjustable double convex asymmetrical lens system is mounted to the front end-cap forwardly of the optical effect element and projects and focuses the image created by the optical effect element.

Abstract: A portable hand held pistol grip type conductor wrapping tool has a tool body with a forward projecting nose portion having a transverse face and a polygonal boss formed thereon for receiving a generally disk shaped mounting bracket for a conductor insulation stripping device. The mounting bracket has a polygonal recess complementary to and adapted to be supported on the boss in one of a plurality of circumferentially spaced working positions with respect to the longitudinal axis of the tool. A threaded nose projection extends forwardly from the boss for receiving a not and resilient "o" ring type gasket for retaining the mounting bracket rigidly secured on the tool body in its selected working position.

Abstract: An improved recessed lighting fixture of the type employing a separate incandescent light bulb socket enclosure substantially removed from the reflector of the fixture employing thermal protection is disclosed. The improvement comprises a thermal sensor and switch assembly mounted to the outer surface of the separate socket enclosure in close proximity to the outer surface and adjacent to the light socket and substantially removed from the reflector portion of the fixture. A protective enclosure is removeably mounted over the thermal sensor and switch assembly and the switch is connected in series with the power supply and socket so as to disconnect the socket from the power supply at a predetermined temperature as sensed by the sensor.

Abstract: A floor treating machine adapted to operate as a floor scrubber and a floor polisher or buffer includes a main housing or support frame structure from which extends a brush housing assembly. The main housing contains a combined solution and recovery tank, a motive device to power the floor treating machine, a propulsion system to propel the floor treating machine along the floor, a pneumatic power system, a squeegee subassembly and electrical and pneumatic control systems therefor. The brush housing assembly is operatively connected to the main housing by a brush lifting mechanism such that two brushes selectively rotating in opposite directions in the brush housing assembly can be lifted away from the floor or moved toward the floor so that the brushes exert the correct amount of pressure against the floor depending on the job being done.

Abstract: A power factor correction capacitor is disclosed which includes: one generally flat elongated extended foil pack formed by wrapping a sheet of film, a wider sheet of foil, another but similar sheet of film and another but similar sheet of foil; a second generally flat elongated extended foil pack generally similar to the first pack; and at least one clip which mechanically connects one of the extended sheets of foil in the first pack with one of the extended sheets of foil in the second pack by physically piercing the extended edges of the adjacent foil ends.

Abstract: A current measuring apparatus utilizes a known fundamental frequency, e.g., 60 Hz, for measuring current and includes a sensing and measurement pulse generation circuit including a current transformer for developing a low power signal directly related to the line current in a powerline, and a diode bridge with a first Zener diode for sensing when the developed current related signal exceeds a first predetermined positive threshold value and a second Zener diode for sensing when the developed current related signal falls below a second predetermined negative threshold value. Across the bridge is an LED for generating a first measurement signal having a duration related to the time when the developed signal exceeds the positive threshold value and second measurement signal during the time when the current related signal falls below the negative threshold value.

Abstract: A light fixture including a fixture housing and a detachable reflector is provided with an arrangement of a cylindrical rim portion of the housing having circumferentially spaced radially outwardly projecting sets of lobes or projections which form grooves for receiving cooperating radially inwardly disposed projections on the reflector whereby the reflector may be twisted on and off of the fixture housing. The lobes on the housing are spaced apart and provided with opposed abutment surfaces which are engaged by the edges of the projections on the reflector with respect to the housing. One of the abutments includes an inclined surface whereby forcible elastic deflection of the reflector projections permits disassembly of the reflector from the housing at will. The reflector and the housing are provided with indicia to facilitate alignment, assembly and diassembly of the reflector with respect to the housing.