Abstract: A dental handpiece having a head mounted to a shoulder has a coupling ensemble formed of two coupling assemblies. The first coupling assembly is mounted within the shoulder and comprises a gear mounted to a shaft with the shaft extending into a coupling hand. A second like coupling assembly has a bevel gear with a shaft extending therefrom into a coupling hand. The second assembly is mounted within a throat sleeve, which is mounted within the neck of the head. Each coupling hand has a pair of tongues, with slots formed between the side walls of the tongues, to allow the coupling hands to drivingly lock together. The tongues are shaped so that as they are moved into contact with each other, they are directed to have their side walls interlock with one another. The tongues can have anterior slanted walls extending into a point, to facilitate such directing of the tongues into interlocking position.

Abstract: An apparatus for accurately positioning an object such as a radiation probe within a defined three dimensional space has a pair of support bars extending along each of three perpendicular axes defining said space with bearing block supports slidably mounted along each set of support rods. A cable drive for each direction of movement is provided to move these bearing blocks including a drive motor, a drum assembly including a capstan and cable guide, a drive cable, and a plurality of pulleys spaced along the system to achieve a balanced movement of the system in the associated direction. The cable is aligned so that each section of its run is either perpendicular or parallel to its other sections and is arranged with the capstan and cable guide so that there is an increase of tension as the cable is reeled in and a decrease of tension as the cable is payed out to reduce the stretching of the cable as the apparatus is operated.

Abstract: A stabilized axle seat for mounting a suspension in cantilever fashion from an axle for a nonpowered vehicle prevents axle windup as the brakes are applied and yet permits limited oscillation of the axle to follow the varying contour of the road. The stabilized axle seat includes two spaced apart axle brackets, each bracket having an ear extending along the side of the torque rod to provide a location at which a bushing may extend through the torque rod and to each axle bracket. A main bushing directly below the axle and connecting the end of the torque rod to the axle brackets provides a second location at which the axle brackets are pivotally mounted to the torque rod. Each of the spaced apart bushings has an elastomeric member which permits limited oscillation of the axle seat and axle to more closely follow the varying contour of the road and provide a smoother and safer ride.

Abstract: An electronic circuit for automatically disconnecting a start winding of an electric motor after a predetermined time delay is suitable for use in instantly reversing applications and provides timed disconnection of the start winding upon substantially instantaneous reconnection of the motor for reverse rotation. The circuit includes a triac and full wave bridge, the full wave bridge providing full wave rectified D-C to a timing circuit and a resetting circuit. The resetting circuit utilizes a PUT which switches at the gate lead of an SCR in the timing circuit to de-energize it and permit discharge of the timing voltage accumulated during a timed start cycle. A capacitor and resistor in series with the PUT maintain the current therethrough to prevent turn-off during the valley portion of the rectified D-C supply.

Abstract: A source of electricity has a first electrode, a second electrode which is spaced from the first electrode and which is made from a metal that is displaced in the electromotive series from the metal of the first electrode, a first mass which is electrically conductive and which contains particulates and liquid and which is in electrically-conducting engagement with the inner surface of the first electrode, a second mass which is electrically conductive and which contains particulates and liquid and which is in electrically-conducting engagement with the inner surface of the second electrode and which has at least one particulate that is different from all of the particulates in the first mass, an interface between the confronting surfaces of the first and second masses, a polarity-imparting material in one of the masses, and that polarity-imparting material and the liquids enabling the masses to cause the electrodes to supply a unidirectional flow of current to any load which is connected across them.

Abstract: An electronic circuit for measuring the IR drop free potential of a cathodically protected structure includes a shunting transistor which is periodically pulsed on to shunt or electrically connect the output lines of a rectifier to force the voltage and current delivered to a structure being cathodically protected to zero. The reference cell potential is measured during this zero or sampling time and a minimum value detected by a detector circuit which holds the value until changed in successive sampling periods. The minimum reference cell potential is then compared to a voltage corresponding to a desired reference cell potential and the difference used to generate a firing voltage for SCRs in the rectifier and thereby control its output to achieve the desired level of cathodic protection.

Abstract: A drive train includes a rotating shaft driven element of a materials handling device with two drive motors separately coupled to the drive shaft to provide a slow and fast traverse speed and thereby increase the throughput of the machine. A brake mounted on the rotating drive shaft allows exact positioning of the element. The drive shaft drives a gearbox with an automatic oiler to provide a measured application of oil to a bearing not lubricated by the oil bath of the gearbox reservoir. The automatic oiler includes a single action cylinder which sumps oil from the reservoir of the gearbox and which is connected in a slave relationship to any other repetitive function in the materials handling device. A counterweight attached to the piston rod automatically resets the cylinder after each operation. A method within the operation is recited for moving a rotated shaft driven element from a first position to a home position with the drive train apparatus disclosed.

Abstract: A sundial comprising a block of transparent material in the general form of a frustrum of a semi-cylinder, with first planar surface at an angle to the cylindrical axis that corresponds as nearly as may be to the complement of the angle of latitude at which the device is to be used, a second diametrical surface that has a medial index or gnomon line coincident with the cylindrical axis, and with a plurality of concave flutes on the cylindrical surface extending parallel to the cylindrical axis and providing, between adjacent ones, narrow, flat, translucent, substantially linear surfaces fifteen degrees apart.

Abstract: A welding torch is supported by a mount which can be oscillated about a vertical pivot that is carried by and movable with an up-down frame which is carried by and movable with a forward-rearward frame that is carried by and movable with a laterally-movable frame. As a result, that welding torch can be oscillated about a pivot which is movable vertically, forwardly and rearwardly and from side to side. A plurality of cams are mounted adjacent each other and act through linkages to provide any desired individual or combined oscillation, up-down, forward-rearward, or lateral movement of that welding torch.

Abstract: A first embodiment of a leaf spring suspension assembly for a tractor trailer or the like having single or multiple axles includes a first and second hanger with a camelback spring slidingly secured to an axle bracket assembly with a single torque rod extending between the forward hanger and the axle bracket assembly to stabilize same and prevent axle wind up or wheel hopping. In a multiple axle vehicle, a pivoting type equalizer is mounted between leaf springs and provides the bearing support for an end of each spring. In a second embodiment, an equalizer is supported from the chassis member by an elastomeric spring member with a shock absorber dampening the oscillation thereof. The equalizer is stabilized in the fore and aft direction by a mounting bracket and web assembly within which the mounting bracket extends, and a telescoping tube assembly vertically aligned and surrounding the shock absorber to permit vertical movement but restrict fore and aft movement of same.

Abstract: Thymidine may have its solubility in water increased by as much as 10 times or even more by combining the thymidine with a solubilizing agent, such as a salicylate derivative selected from salicylic acid, amino and methyleneamino substituted salicylic acids and salts and esters thereof. The thymidine and solubilizing agent may be combined by grinding in the dry state. The compounds are most conveniently used in approximately equimolar quantities.

Abstract: A dental tool and handpiece, wherein the tool has a projecting cylindrical, flexible flange extending into a cylindrical recess in the handpiece and sealable thereinto by centrifugal force. Various forms are illustrated. The operation of the flange is independent of the attaching means for the tool, and end forces on the tool are not transmitted through the flange, but rather are transmitted through a driven shaft on which the tool is mounted, thence through a driven gear having a thrust bearing engagement with the closed end of the head.

Abstract: A detecting magnetic coil is mounted adjacent the authenticity-determining magnetic coil of an electronic slug rejector to distinguish between authentic coins and any copper slugs which might cause the authenticity-determining coil to produce an output which closely simulates the output which that authenticity-determining coil produces in response to authentic coins. The signal from that detecting coil is used to control the accept/reject gate of that electronic slug rejector; and it will effect movement of that gate to "accept" position in the event it detects a non-cupreous object but it will not effect such movement of that gate in the event it detects a copper slug.

Abstract: The slider, to which the rear wheels of an automotive trailer are secured, can be released from that trailer to permit limited forward or rearward movement of that trailer relative to that slider. Sensors are spaced short distances apart along a portion of the length of the trailer, and openings in longitudinal members of that trailer are precisely oriented relative to those sensors. Power-operated locking pins can be selectively withdrawn from those openings to permit relative movement between that slider and that trailer, and thereafter those pins can be driven into those openings to prevent such relative movement. A readout is mounted in the cab of the tractor to enable the driver to precisely determine the relative positions of the slider and trailer and to effect power-controlled unlocking and locking of that trailer and slider.

Abstract: A method of repairing cracks in a concrete structure to prevent leakage wherein rods are inserted in the crack at spaced intervals to extend outwardly therefrom. A surface seal is applied to extend partially into the crack near the structure outer surface from which the rods extend, and to the structure outer surface adjacent to the crack and around the rods so that the surface seal acts as a surface barrier for the filler to be injected. Port members, having hollow shaft portions, and a flange portion are placed over the rods with the flange portions approximately adjacent the structure outer surface. Substantially the entire flange portion is embedded in the surface seal. The surface seal is allowed to cure to define a surface barrier for the filler, and the rods are removed from the crack and port members such that the ports communicate with the crack cavity behind the surface seal.

Abstract: A housing for a watch has a portion which helps form said housing and which has an annular gallery that comprises a plurality of filigree-forming elements--some of which are circumferentially-displaced threaded sockets to accommodate the male threads of stud-type gem mountings.

Abstract: A refrigerated receiver in an automatic milking system has a coiled plate type heat exchanger disposed therein for pre-cooling milk before it is pumped into a milk cooling and storage tank. The heat exchanger is adapted for use in a direct expansion refrigeration system which can be operated in a heating mode to heat wash water as it is circulated through the system. The coiled plate type heat exchanger can be cleaned and inspected while in place inside the generally cylindrically shaped receiver unit as it is substantially vertically oriented with a generally annular space between successive turns of the coiled plate.

Abstract: A machine for automatically sealing the end of various sized lengths of plastic tubing and for filling same has a clamshell clamp for straightening and firmly positioning the tubing, a carriage with an alignment ring which is lowered over the end of the tubing, a heat probe with a separate drive for insertion into the tube end to heat it, and a plurality of plows having depending guide legs which are simultaneously advanced radially inward against the heated tube end to collapse it and hold it as it cools, thereby creating a weld seal. An abrading arm assembly is mounted to the carriage and has an abrading brush or roller which may be rotated upon insertion into the tube end to roughen the inner surface of the tube end to enhance the weld seal. The tube straightener and the alignment ring positively align the pipe and the heat probe. A filler arm assembly is mounted to the carriage and may be extended to align with the tubing.

Abstract: A multiple layered laminated tape has an upper strength layer made of a film of pre-stretched polypropylene or the like which is laminated to a very weak lower carrier layer of relatively thin low internal bond Kraft paper. The carrier layer has a coating of a water soluble adhesive which is used to apply the tape to separable portions of a cardboard carton or the like. The carrier layer serves only as a medium to "carry" the water soluble adhesive and also to provide sufficient longitudinal rigidity to permit dispensing of the tape from a standard Kraft paper type tape dispensing machine. Stripping the tape from a carton pulls away the upper plastic layer and may split the Kraft carrier layer that has low internal bond, leaving only so thin a layer of Kraft on the carton that it can very easily be broken to permit opening of the carton.

Abstract: An integrated solar roof system, consisting of insulated roofing panels and collector panels, and method of producing same wherein the base assembly of the collector panel may be used with either an air or liquid absorber and is both an insulator and radiation shield as well as an integral structural part of the roof of the building on which it is mounted. The construction of the panels lends itself to mass production techniques and the efficient use of materials making the panels cost effective. The collector panels are also suitable for use as independently mounted units, functioning only as collectors and not as roofing members. Collector panels and insulated roofing panels, being identical in size and installation method, and said installation method being simple and quick, a suitable combination of panels may become a complete roof with minimal installation labor.