Abstract: A method is provided for regenerating a fixed bed of olefin polymerization catalyst which can be performed without taking the catalyst bed out of service. The method involves the use of two different olefin-containing feedstocks, wherein the first feedstock is a conventional olefin-containing feedstock which contains little if any content of aromatic compounds. The second feedstock contains a significant concentration of aromatic compounds. In the practice of the invention, the second feedstock is substituted for the first feedstock whenever catalyst regeneration is deemed appropriate, and the flow of the second feedstock to the catalyst bed is continued for a period of time which is effective to at least partially regenerate the catalyst.

Abstract: A method is provided which can be used to quickly and easily take a fixed-bed of solid acid olefin polymerization catalyst out of service without causing any significant catalyst deactivation. The method involves substituting a substantially olefin-free hydrocarbon fluid for at least a portion of the olefin-containing feedstock to the polymerization process, wherein the substantially olefin-free hydrocarbon fluid boils within the range from about 20.degree. to about 250.degree. C. and contains at least about 5 vol. % aromatics.

Abstract: A confined space manhole sign system for use in association with a manhole including a ledge and a manhole cover, the apparatus comprises a plurality of manhole insert members each having a circular base with an upper surface, an upstanding sidewall extending from the base and being formed contiguously therewith, two drain apertures being positioned at the intersection of the base and the sidewall, a flange being formed contiguously with the upstanding sidewall and extending radially therefrom, the flange having a lower surface including a plurality of perforation grooves formed therein; and a plurality of warning signs each having descriptive indicia marked thereupon, each of the warning signs being fixedly positionable upon the upper surface of the base, the system warning manhole workers of potentially dangerous situations within a manhole.

Abstract: An airbag cushion assembly including a horn switch unit secured to an airbag cushion with a cushion strap, with the cushion strap and horn switch unit cooperating to retain the airbag cushion in a deflated, folded position prior to mounting the airbag cushion assembly within an airbag module and prior to inflation of the airbag cushion. The horn switch unit defines a first elongated slot, a second elongated slot and a weakened portion rupturable upon a force created by inflation of the airbag cushion to break the horn switch unit between a first and a second elongated slots defined by the horn switch unit. The horn switch unit is positioned on the folded airbag cushion opposite the collar, with a first elongated tether of the cushion strap extending through the first slot of the horn switch unit to a distal end secured to the collar of the airbag cushion, and a second elongated tether extending through the second slot of the horn switch unit to a distal end secured to the collar of the airbag cushion.

Abstract: Management computers of a packet-switched computer network allocate transmission bandwidth for transmissions such as those for conferences between client computers of the network. Callers and callees request bandwidth from their associated managers for transmissions. Managers monitor and allocate bandwidth taking into account whether the transmissions are between local clients or local and external clients. Managers maintain records of active transmissions, but need not maintain lists of client computers with which the managers are associated.

Abstract: The internal tether of a driver's side automotive airbag is of one or two members, each having a plurality of radial straps. Central portions of the tether are sewn to the airbag front panel by a seam which includes a linear portion crossing the center line of each of the radial strips. In the case of a square seam, the square has rounded corners of a radius suitable for gradually transferring the load from the tether to the front panel to reduce stress concentrations.

Abstract: Alignment circuity and calibration method for a scanning interferometer. Phase shifts are introduced into the alignment servo to maximize overall modulation efficiency.

Abstract: A method and apparatus for logging or identifying each page of a facsimile transmission or reception by a facsimile machine with a facsimile access controller is disclosed. The method involves several steps which include monitoring the transmission or reception of data by the facsimile machine for a resolution signal and end-of-line signals in the data, determining the number of lines which will be on a page based upon the resolution signal, counting the number of the end-of-line signals transmitted, detecting an end-of-page signal, and logging a transmission or reception of a page when the total count of the end-of-line signals indicates that a page has been transmitted or the end-of-page signal is detected. The apparatus includes a monitor coupled to the signal line from a facsimile machine for monitoring data on the signal line during facsimile transmissions or receptions. A converter is coupled to the monitor for converting the data from the signal line.

Abstract: A commuications control system for distributing execution of communication connecting among the service access points of a local multiprocessor computer system and remote computer systems interconnected by a communications network. A load balancing module includes a local user list for storing the number of communications connections being executed by each local access point and a remote user list for storing the number of communication connections between each local service access point in the local computer system and each remote service access point.

Abstract: A camera attachment converts a standard day-light video camera into a day/night-vision video camera. The attachment device has a threaded input and output to physically and optically interconnect an auto-iris lens to a video camera. The attachment device contains an image intensifier tube and a fiber optic image conduit either of which may be switched into the through optical path to receive and either amplify or simply conduct the light image to a relay lens. The relay lens focuses the output image from either the image tube or the fiber optic image conduit onto the optical input of the video camera. The switching of the image intensifier tube or the fiber optic image conduit is dependent upon the ambient light conditions of the camera so that if there is insufficient lighting for normal daytime viewing the image tube is activated and switched into the through optical path of the camera.

Abstract: A low cost image intensifier tube is provided which has an improved vacuum sealing mechanism and improved optical transmission. Glass windows on both the input and output of the tube are vacuum sealed within the housing by a ring of indium that contacts the interface between each of the windows and the housing. A pair of raised pointed flanges each positioned along the inner housing surface interfacing the windows protrude into the adjacent ring of indium for improving the vacuum seal of both input and output windows and for controlling the spacing of the elements within the tube. Sealing the photocathode from the rest of the tube is a ceramic cathode cork. The cathode cork is a solid sealing ring press fit within the tube housing and colocated between the input window at the outer edge of the photocathode and the microchannel plate.

Abstract: A preferred photographic printer (10) includes light filters (52, 54, 56) which can be shifted to selected positions for filtering respective spectral components from selected portions of a light beam (100) in order to vary the spectral make-up of the light beam, and further includes a preferred metal halide lamp (48) which produces a spectral output with substantial portions in the visible band.

Abstract: Cephalosporin compounds of Formulas II ##STR1## where R is hydrogen or a pharmaceutical cation, in which case R.sub.1 is not present, orR is hydrogen or a chemical bond when R.sub.1 is an acid addition salt anion, and R.sub.2 is (a) hydrogen, (b) a duplicate of the formula I compound to form a dimer, (c) an aminocarbonylmethyl, or (d) an --SR.sub.3 group where R.sub.3 is alkyl, cyclohexyl, phenyl, chloro-substituted phenyl, nitro-substituted phenyl, benzyl or furfuryl, have been found to be valuable as antibiotics for treating warm-blooded animals to combat pathogenic bacterial infections which cause diseases such as the commonly known "shipping fever".

Abstract: A fast and effective way to step a relative position quantity by a reference interval. Each step in relative position includes open-loop and closed-loop control intervals. The invention contemplates an actuator capable of changing the relative position and a closed loop servo that acts on the actuator to keep the relative position centered on the nearest one of a series of reference values separated by the reference interval. The actuator is preferably capable of a fast response. Stepping the relative position is accomplished as follows, assuming an initial condition where the servo has locked the relative position to a particular initial reference value. First, the actuator is caused to change the relative position by an amount approximately equal to the reference interval in a manner that the servo cannot track the change, such as by disabling the servo. Servo control is then re-established, at which point the servo operates to keep the relative position centered on the nearest reference value.

Abstract: Cephalosporin compounds of Formulas II ##STR1## where R is hydrogen or a pharmaceutical cation, in which case R.sub.1 is not present, orR is hydrogen or a chemical bond when R.sub.1 is an acid addition salt anion, and R.sub.2 is (a) hydrogen, (b) a duplicate of the formula I compound to form a dimer, (c) an aminocarbonylmethyl, or (d) an --SR.sub.3 group where R.sub.3 is alkyl, cyclohexyl, phenyl, chloro-substituted phenyl, nitro-substituted phenyl, benzyl or furfuryl, have been found to be valuable as antibiotics for treating warm-blooded animals to combat pathogenic bacterial infections which cause diseases such as the commonly known "shipping fever".

Abstract: An integrated circuit module (200) in which an error detection circuit (234, 263) compares data (204) generated internally on module (200) with data (108) generated externally from another substantially identical module (100). An error detect output (238) is asserted upon the condition that data (204) generated internally on module (200) and data (108) generated externally from module (100) do not match. A circuit (222, 224) alters the internally generated data (204) by injecting erroneous data into the internally generated data (204) to thereby generate altered data (230). Error anticipation control logic (210) generates a test condition (214, 216), which corresponds to the expected error condition caused by altered data. Comparison circuit (242) compares the actual error detect output (238, 240) with expected error detect output (214, 215). An error output (244) is asserted if the actual error detect output (238, 240) and the expected error detect output (214, 216) do not match.

Abstract: Control logic for controlling references to a cache (24) including a cache directory (62) which is capable of being configured into a plurality of ways, each way including tag and valid-bit storage for associatively searching the directory (62) for cache data-array addresses. A cache-configuration register and control logic (64) splits the cache directory (62) into two logical directories, one directory for controlling requests from a first processor and the other directory for controlling requests from a second processor. A prefetch buffer (63) is provided along with a prefetch control register for splitting the prefetch buffer into two logical channels, a first channel for handling prefetches associated with requests from the first processor, and a second channel for handling prefetches associated with requests from the second processor.

Abstract: An error-checking system in which two substantially identical modules are checked by comparing the outputs (43, 63) from the chip logic (41, 61) on each modules with each other. One module is designated a master and the other module is designated a checker. The compare logic (46 or 66) is functional only when the module that it is on is designated as the checker. A control bit designates a module as either a master or a checker. A second control bit indicates when in a first state, that a module designated as a master drives the bus, and when in a second state that a module designated as a master and a module designated as a checker alternately drive the bus. Circuitry distinguishes a warm initialization from a cold initialization. A bit in a register causes a module designated as a master to become a checker upon every alternate warm initialization, so that the module alternates between being a master and a checker only each time a warm initialization occurs.

Abstract: A combined pump and oil reservoir and oil delivery apparatus directs oil to the internal chambers of a portable sewing machine where oil is distributed by pump pressure, gravity flow, capillary action, wicking, misting and movement of machine components. Oil is pumped into a manifold leading to upper and lower main drive shaft bearings and to the needle driving assembly for subsequent dispersion during rotation and reciprocation of machine parts to fling such oil outwardly within the internal chambers to oil machinery both directly and by misting.