Abstract: A circuit breaker mechanism is provided with a U-shaped tripping lever which has a base and first and second parallel legs. The tripping lever is arranged around the magnetic frame of the circuit breaker and is mounted on pivot points which coincide with the pivot axis of the circuit breaker armature. On one leg is an outwardly extending projection, while on the other leg is a complemental cavity. A number of circuit breakers can be assembled side-by-side, with the projection on the tripping lever of a first circuit breaker engaging the cavity in the tripping lever of an adjacent circuit breaker. Thus, when one circuit breaker is tripped, the others are tripped together with it.

Abstract: A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent magnet ring structures having substantially triangular and quadrangular cross-sections. Both alternating and single direction polarity magnet structures can be used in the bearing.

Abstract: A pressure switch has a housing with an interior bore extending from one end to the other. A rod slidable within the bore and operated by external fluid pressure extends between a piston at one end of the housing and a mechanically operated electrical switch at the other end of the housing. A spring is disposed about the rod between a first stop on the rod and a second stop on the housing. The spring provides resistance against movement of the rod under external pressure. The resistance of the spring to movement is adjusted by a sleeve engaging the spring, with the sleeve threaded into the bore of the housing for movement longitudinally within the housing. The sleeve includes plural radially extending slots disposed around the sleeve. A port in the housing allows access to the sleeve and a cover is provided for the port. The cover includes a ring disposed around the housing and threaded onto the housing over the port.

Abstract: An electronic scale is disclosed having a device for recalibrating the scale from time to time after the scale is moved from the factory to a site of installation in order to adjust the scale for physical and/or environmental operating conditions which are different from those which prevailed at the factory when the scale was originally calibrated after the completion of manufacture and which have an adverse effect on the accuracy of the scale if the scale is not recalibrated under these conditions. The scale is provded with a device which adds a predetermined fixed weight to the load cell of the scale at any desired time or interval of time, and an electronic count indicative of this weight at the site of installation is compared with an electronic count of the same weight taken at the factory and stored in a memory, and the digital readout of the scale is then adjusted by an amount which is the same as the ratio of the original count of the weight and the count thereof taken at the site of installation.

Abstract: An electromagnetically actuator is disclosed having an electromagnet, a core element, the core element having a normally biased initial spaced apart first position distal from the electromagnet when the electromagnet is off and a second stop position proximal from the electromagnet when the electromagnet is on, a first resilient member adapted to bias said core element in the normally biased first position, and a second resilient member adapted to bias the electromagnet away from the core. The first resilient member is more resilient than the second resilient member. Therefore, the core approaches the electromagnet when the electromagnet is on until the core reaches the fixed stop position, and the electromagnet subsequently approaches the core to the fixed stop position. The actuator may further include an adjustment member that engages the electromagnet so as to control the pressure of the electromagnet against the second resilient member, whereby the axial position of the electromagnet is controlled.

Abstract: A multi-check metering method employing load cells, characterized in that a plurality of load cells preferably stacked one upon another are attached to a metering table, a meterial to be metered is placed on said metering table, said load cells are operated simultaneously by applying thereto the weight of said material, and respective metered weights of said material are displayed by metered-weight display means based on output signals sent from said load cells; and a load cell metering device comprising a metering table, a plurality of load cells and metered-weight display means.

Abstract: A deactivator for use in an electronic article surveillance system has a housing having a first receptacle containing a deactivator for deactivating a theft-deterrent marker carried on an object such as a compact disk case, an audio cassette case or a video cassette case. The first receptacle is made up of a base, a first wall and a second wall, the walls being spaced apart such that an object carrying the theft-deterrent marker can be placed between the walls. The first wall is slidable relative to the second wall. The housing also has a second receptacle with a deactivator for deactivating a theft-deterrent marker carried on a generally rectangular object such as an audio cassette box having a top and a bottom, first and second sides and first and second ends, the marker being carried by one of the sides or one of the ends. The device comprises a housing having a receptacle comprising first, second and third walls arranged so as to form three sides of a box.

Abstract: A charged particle trap having a spherical shell of magnetic material and a pherical hollow cavity positioned concentrically within the shell. A polar axis passes through the center of the shell and cavity. The shell is permanently magnetized to produce a double-tapered magnetic field having barrel-shaped flux lines that are concentrated at the cavity poles. The magnetic material has a remanence B.sub.r (.theta.) that varies in direction and magnitude such that its angular orientation .alpha. with respect to the polar axis varies as a function of the polar angle .theta. of the material's average location in accordance with the equation .alpha.=2.theta.. The magnitude of the remanence B.sub.r (.theta.) varies according to the following expressions: B.sub.r (.theta.)=B.sub.r (0) [B.sub.r (.pi./2)-B.sub.r (0)] 2.theta./.pi., for average polar angles between .theta.=0 radians and .theta.=.pi./2 radians; and B.sub.r (.theta.)=B.sub.r (.pi./2) [B.sub.r (.pi./2)-B.sub.r (0)] (2.theta.-.pi.)/.pi.

Abstract: A bi-directional snap-action register mechanism for an odometer-type mechanical register display. The mechanism includes at least one register display wheel and a bi-directional cam mounted coaxially along a common shaft with the register display wheel. The bi-directional cam engages a helical groove formed along the shaft to allow lateral displacement of the bi-directional cam in a direction parallel to a rotational axis of the shaft. A pin is biased by a spring into contact with the bi-directional cam. Rotation of the shaft causes the bi-directional cam to be moved with respect to the pin. The cam abruptly rotates through a predetermined angular distance when the point of contact of the biased pin with the cam moved from a smooth portion to a step transition portion of the cam. The abrupt rotation of the cam is communicated to the register display wheel to cause a new display position to be moved into view.

Abstract: A discharge silencing apparatus having a noise abating device, a housing enclosure for the device and an integral frame for supporting a blower and accompanying motor. The frame provides support for the blower and provides sealing ends for the enclosure to insure outflow of air through the noise abating device to an outlet of the enclosure.

Abstract: An image recording apparatus wherein a recording medium is fed in a predetermined feed path. The apparatus is provided with a pair of edge holders opposedly arranged about the feed path for holding edge portions of the recording medium. One of the edge holders is provided with an edge holding space extending along the feed path and having a substantially S-shaped sectional configuration.

Abstract: A stringed instrument system comprising a body having a headward edge, a tailward edge, a upper edge, a lower edge, a front and a back. A first fingerboard extends beyond the headward edge of the body and a second fingerboard is located entirely on the body. The first fingerboard includes a fretted surface. A track runs beneath each fingerboard edge. The capo has an axis of rotation eccentrically located within the capo. A slider attached to the capo reacts against the track surface and pulls the capo hard against the fretted surface when the capo has been cammed against the fingerboard. The fingerboards may be removably secured to the body so that they are interchangeable.

Abstract: A shutter release device for a camera including a shutter release mechanism which is mechanically released. The shutter release device is provided with a release rod which is pushed down to operate a shutter of the camera, a delay member moved by a predetermined distance relative to the release member to release the shutter, a restraint mechanism and a restraint release mechanism. The shutter release mechanism is controlled by the delay member. The restraint mechanism has an engaging leg formed on the delay member and a restraint projection formed on a base plate, and the engaging leg is engaged with the projection to restrain a movement of the delay member. The release restraint mechanism has a release slant formed on the release rod and engaging with the engaging leg to deform the leg so that it is released by the restraint projection.

Abstract: A camera is capable of recording plural kinds of data at corresponding positions of each film frame. In a first operating mode a first kind of data is recorded at a first position in the film frame disposed at an exposure location, and film feeding is started. Film feeding is suspended temporarily, and a second kind of data is recorded at a second position of the frame. Then film feeding continues to bring a subsequent frame to the exposure location. If no second kind of data is to be recorded or if no data of any kind is to be recorded, the film feeding is not temporarily suspended. Data recording may occur in the course of film winding or film rewinding. Some or all of the data may be stored before recording, and the order of the recording of kinds of data may be changed, e.g., at the last frame of the film. In some embodiments the film is rewound by a fraction of a frame before recording of a second kind of data.

Abstract: An active muffler for use in motor vehicles comprises a sensor, an electronic control responsive to the signal generated by the sensor for producing a drive signal delivered to a transducer which emits cancellation pulses phased 180.degree. from the sound pressure pulses passing through a conduit, where both front and rear sides of the transducer are acoustically coupled to the conduit to improve the efficiency of the transducer operation. Preferably, the acoustic coupling comprises an enclosed chamber including a port for communicating with the conduit which can be tuned to resonate at predetermined frequencies. When both sides of the transducer are so coupled to the conduit, the transducer has increased efficiency over a broad band of frequencies, and the frequency band can be broadened at the low end as required to accommodate the frequencies generated by a source of noise.

Abstract: A sound attenuator has at least one sound absorber composed of a hollow body of a hard porous material and an outer or inner layer of air, and exhibits good sound-absorbing property even in a low frequency range, even if the hollow body has a small wall thickness. The hollow body may be provided with projections or a semicircular or otherwise shaped part or parts, or both, serving to maintain the outer or inner layer of air in proper shape. The device is inexpensive and yet is very reliable in quality. When the device is long, the projections in linear form are particularly useful for restraining any flanking transmission of noise and thereby enabling the device to achieve a higher rate of attenuation per unit length. The sound-absorbing property of the device can be controlled over a wide range of frequencies if the hollow body has a porosity varying continuously in a specific direction.

Abstract: This invention relates to a calculator and is more specifically concerned with a calculator for enabling a musician to visualize and organize transitions between scales, modes, etc.The present invention provides a calculator having musical notation in which the notes are equi-spaced and arranged in parallel rows on respective elements each of which is independently movable in the direction of the row with respect to neighboring elements, masks overlapping respective elements and individually movable in the direction of the row of notes on the element beneath, each mask corresponding to a particular musical scale or mode and having opaque and transparent sections alternating with one another to expose through the mask only those notes of the row beneath which are used in the scale or mode denoted by the mask.The calculator may be embodied as a flat sheet or it may be cylindrical in which the parallel rows are formed into rings individually rotatable about a common axis.

Abstract: A light-weight and tough muffler having a high noise deadening effect characterized in that the outer barrel (I) of the muffler is made of a thermotropic liquid crystal polymer. An example of said polymer is a wholly polyester having monomer units represented by general formula (I): ##STR1## This polymer may contain 10 to 60 wt. % of inorganic additives such as glass fibers or carbon fibers.

Abstract: A muffling device for enhancing the sound and feel of a bass drum. The muffling device includes a flat pad and a pillow which is hinged to the pad and which exerts spring resistance to flexure about the hinge. The underside of the pad has a pair of fastening strips for application to mating fastening strips on the drum body to secure the pad in the drum body with the pillow flexed about its hinge and resting against the batter head of the drum to apply a tension force to it. The pad and pillow have sound absorbing cores continued within netting having mesh openings through which the cores are exposed.

Abstract: A music rule is disclosed for assistance in the identification of chord, scale and mode structure with respect to the (ivory) key structure of a piano. The scale has a scale body accommodating an interior sliding rule. The interior sliding rule includes two areas for exposure to the user of the rule. The first exposure area--and preferably the lowest exposure area--is an analog of the piano keyboard. This analog of the rule provides for error-free registration of the rule to the keys of the piano. The second--and preferably higher exposure area--contains note indicia representative of the actual notes which the sliding scale overlies. The sliding scale fits to a rule body having first and second window areas. The first window body constantly exposes the keyboard analog of the piano keys. This enables registration of the rule in the entirety to the correct position on the piano keyboard.