Abstract: The output of a fast-acting ratioless logic circuit is monitored by a sensing device, and when one selected logic output is sensed, a voltage is applied to the output node to latch the output to that state. To effect rapid return to the other state, a switch is provided to deactivate the applied voltage when the output node is established at the other state. The latching is made permanent by the further application of a refresh clock which periodically pulses the output node whenever the one selected state is latched.

Abstract: A multiplexing circuit includes a plurality of passive circuit networks having a multiphase clocking signal associated therewith to selectively enable transmission of information signals over a common conductor. Each passive circuit network is enabled during a distinct phase of the multiphase clocking signal to provide a distinct circuit path for transmission of information signals with each distinct path including the common conductor. The enabling of the passive circuit networks by the multiphase clocking signal allows time sharing of the common conductor.

Abstract: In one example, a generally conventional flip-flop circuit is used, including a pair of input field-effect transistors having their gates connected respectively to a pair of circuit nodes A and B. During a preset portion of the cycle, both nodes A and B are preset to an initial reference potential V.sub.R, set so that the transistors turn partially ON and act as variable resistors. Thereafter, an unknown voltage V.sub.X to be sensed is connected to node A, V.sub.X being equal to V.sub.R .+-. .DELTA.V. The flip flop then responds to differential conductivity between the transistors, to produce a binary output voltage at one of two levels set by the sense of .DELTA.V, plus or minus.In a semiconductor RAM circuit, selected memory cell capacitors are connected in sequence to node A, and the flip-flop circuit senses the cell charge and produces an amplified output representative thereof, which is later fed back to the memory cell to refresh the charge originally stored therein.

Abstract: A series of digital words are demultiplexed into two groups and recorded on parallel tracks of a magnetic tape. The digital information is phase encoded upon the two tape channels and during playback the magnetic flux reversals on each channel are separately detected. The peak level of the detected signal is sensed and a peak signal pulse generated corresponding to the occurrence of the peak of the detected signal. Means are additionally included for setting the minimum threshold of the incoming signal necessary to generate a signal pulse so as to provide a level of immunity to system noise. The peak signal pulses are decoded to reconstruct the original data signal and a clocking signal. The data from each of the channel decoders is clocked into respective channel shift registers and multiplexed into its original data word arrangement.

Abstract: A non-stretchable reinforcing cord is wound in a helical groove in a collapsible, cylindrical metal mandrel, and the cord is then tensioned and attached to the mandrel. The mandrel, with cord is placed in an outer mold element having a complementary cylindrical mold cavity, and a curable elastomer is injection molded into the mold space between the mandrel and cavity to mold an endless belt therebetween, and to fill the helical groove and transverse slots in the mandrel so as to form spaced parallel lugs along the inner surface of the belt, in which adjacent portions of the reinforcing cord are completely embedded, the cord being partially exposed in the spaces between lugs. The elastomer is then cured, and the mandrel collapsed to permit removal of the molded belt.

Abstract: A method of and apparatus for bonding together a first and a second workpiece, which are bondable by applying energy thereto while they are urged together at a bonding site. First, the workpieces are urged together by moving into engagement with the first workpiece, and then slightly deforming, a rigid, self-supporting, deformable planar member. The deformation is not only effective to urge the workpieces together, but also forms a capillary space between the member and the first workpiece. Then, the energy is passed to the bonding site. If the energy should produce, molten components at the site, they are attracted into the capillary space to prevent them from creeping up the workpieces and from undesirably building up at the bond site. Multiple pairs of workpieces may be simultaneously bonded by overlying all of the bonding sites with the member and by deforming it by the application of a force at a point generally central to all of the bonding sites.

Abstract: An elongated energy absorbing bumper assembly, particularly adapted for use in absorbing the kinetic energy induced print hammer forces produced in impact printers and the like, is comprised of an outer resilient body portion, and an axially disposed stabilizing rod. The stabilizing rod is employed to substantially minimize the troublesome "kneading" or stretching effects that have otherwise often been encountered heretofore with conventional one-piece elongated bumpers made out of materials exhibiting the requisite resiliency and viscous damping characteristics. Such detrimental effects have developed heretofore both during the assembly of the bumper in the hammer mechanism, and during use thereafter. As a result of the stabilizing rod minimizing dimensional changes in the outer resilient body portion of the bumper assembly along its axial length, the energy absorbing (or damping) characteristics thereof will permanently remain substantially uniform therealong.