Abstract: A light emitting module is attached to one of a pair of separable U-shaped metal clamps that can fit around a weapon trigger guard. The clamps have recesses for retaining elastomeric inserts which contact the trigger guard. The inserts are of inexpensive glass-filled molded plastic rather than machined steel so that a greater variety can be provided at low cost and little value is lost by discarding those not needed for a particular weapon. The greater variety provides a better fit with little or no custom shaping and the elastomeric inserts are much easier to shape if an unusually contoured trigger guard is encountered. The electrical cord running to the on/off switch for the module emerges from the module in fixed relationship to the clamps and need not be removed to change the module batteries. A trigger guard mountable laser sight that is more resistant to shock and requires less ongoing adjustment to maintain light beam and boresight coincidence is obtained.

Abstract: A device for ascertaining the natural break to the west of a golf green is obtained by the incorporation of a compass with an existing golf implement in accordance with one or more of a plurality of embodiments. The compass includes indicia indicating west, the direction of the natural green break, and, in one preferred configuration, the indicia directly indicates only west. The several embodiments disclosed and discussed include the combination of a compass and a golf glove, a compass and a ball marker, a compass and a golf club (in variant configurations) as well as broadly adaptable compass golf accessory embodiments which include special purpose structure by which the break finder may be removable or permanently fixed to a golf implement.

Abstract: A method for addressing mass memory in which information is stored in control intervals of physically contiguous disk segments subject to irregularities in the mapping is disclosed. Such irregularities may include discontinuities at some regular interval, which may or may not be 2", and/or offset from zero with respect to a virtual address employed by a user. Within the method, a unique hashing algorithm is employed to convert a virtual address to a physical address taking into account such irregularities in the mapping. This algorithm is particularly characterized by its use of integer binary arithmetic which results in high speed and complete accuracy. For the special and common condition in which discontinuities appearing at some regular interval of 2", a similar disclosed algorithm may be employed to achieve even greater speed of address transformation.

Abstract: In order to gather, store temporarily and efficiently deliver (if needed) safestore information in a fault tolerant central processing unit having data manipulation circuitry including a plurality of software visible registers, a shadow set of the software visible registers are used in conjunction with shadowing and packing circuitry for copying the contents of the software visible registers, after a data manipulation operation, into the shadow set after the validity of such contents have been verified. In the event of a detected fault in a data manipulation operation, the contents of the shadow set, which will be the last valid set immediately before the error was detected, are transferred back to the software visible registers to institute recovery at the point in the data manipulation immediately prior to that at which the error was detected.

Abstract: In order to gather, store temporarily and efficiently deliver (if needed) safestore information in a fault tolerant central processing unit having data manipulation circuitry including a plurality of software visible registers, a shadow set of the software visible registers are used in conjunction with shadowing and packing circuitry for copying the contents of the software visible registers, after a data manipulation operation, into the shadow set after the validity of such contents have been verified. In the event of a detected fault in a data manipulation operation, the contents of the shadow set, which will be the last valid set immediately before the error was detected, are transferred back to the software visible registers to institute recovery at the point in the data manipulation immediately prior to that at which the error was detected.

Abstract: Electrophotographic developing apparatus including a carrier of latent image formed on a photoconductive layer superposed to a conductive layer, a carrier of developing material juxtaposed to the latent image carrier at a developing zone for transferring the developing material on the photoconductive layer in a configuration corresponding to the latent image and a transfer station in which a printing support is brought in contact with the photoconductive layer for transferring the developing material from the photoconductive layer to the printing support, the distribution of the developing material on the photoconductive layer being enhanced by subjecting the photoconductive layer, in a zone extending between the developing zone and the transfer station, to an alternating electrical field which enables migration of developing material particles from the outside of the latent image to the inside of the latent image.

Abstract: A multilayer substrate provides predetermined connections to and between a plurality of integrated circuit chips mounted thereon. A plurality of layers mounted on a surface of a substrate has a plurality of layers comprising a plurality of dielectric layers, a first plurality of metallic layers, and a second plurality of metallic layers. The first plurality of metallic layers has a predetermined pattern for forming the predetermined connections, these being the x-lines and y-lines. Each of the second plurality of metallic layers provides a predetermined voltage level to the integrated circuit chips, and each of the second metallic layers has a screen-like structure. Each of the first and second metallic layers is insulated from the other metallic layers by one of the dielectric layers, except for desired interconnections between the x-lines y-lines, and power layer (or power plane).

Abstract: In a data processing system having a system controller unit (SCU) which interfaces a plurality of equipments with a memory unit, the SCU determines which of the equipments will be permitted to communicate with the SCU or memory unit in response to a request from the equipments. The SCU includes an activity monitor and control apparatus which determines whether the request from the equipments can be accepted. The activity monitor and control apparatus comprises a plurality of first elements, each of the first elements being assigned to monitor a request which has been accepted. The activity monitor and control apparatus monitors the operations with the SCU thereby providing status information of the SCU. A plurality of second elements, which is operatively connected to the first elements, combines preselected status information to generate control signals thereby indicating current and future availability of the SCU in order to determine whether a request can be accepted.

Abstract: A positively steered racing wheelchair is disclosed which includes a frame support on a pair of large wheels and a positively steerable trailing wheel. A seat for the athlete is suspended from a central position of the frame and is configured such that the athlete sits in a very low position to improve stability and to advantageously place the leverage of the athlete's arms with respect to a pair of drive rings situated outboard the large wheels. Positive steering of the may be accomplished in various ways. One embodiment employs a laterally pivotal seat structure with actuating cables connected to the seat back such that pivotal motion of the seat, as the athlete leans into a turn, is communicated to the trailing wheel to effect steering. Another embodiment utilizes actuating cables attached to cuffs around the athlete's biceps such that the natural tendency to twist into a turn can be translated into steering forces.

Abstract: Lock-out of pending higher high priority requests to a system controller is prevented by a circuit which comprises a counter element for counting the number of times the pending higher high priority request is not granted access. The counting results in a count value which is temporarily stored in the counter element. A compare element compares the count value to a predetermined value, the predetermined value being a predetermined number of times the data processing system will permit bypassing the pending higher high priority request. A control signal is outputted from the compare element when the count value is equal to the predetermined value and is coupled to each port to inhibit any further request for access from the equipment from being accepted by the system controller.

Abstract: A diagnostic expert system incorporating a cause-effect graph is disclosed in which "yes", "no" and "unknown" are valid possible responses to a query. Each node in the graph is assigned a local decision factor (LDF) based on a given node's desirability for selection during best-first search and a collapsed decision factor (CDF) based on the average values of the LDFs for all its daughter nodes. For a current node being processed, a list of all its daughter nodes is obtained and examined to remove all daughter nodes that have been visited before in the current transition and all daughter nodes which have prerequisites that are not met. Then, the daughter node with the largest LDF is selected and its test function is executed. If the user response is "yes", the daughter node is made the current node, and a list of its daughter nodes is obtained to continue the process.

Abstract: A multiple output switching power supply having one controlled output and load compensation, where periodical voltage pulses, induced in at least two secondary windings of a transformer, load two buffer capacitive elements, each connected between ground and, respectively a first and a second output terminal at two different, like sign voltages and makes available two output voltages V1, V2, one of which (V1) is controlled, at first and second output terminals, respectively, and where the capacitive element connected between ground and the first terminal includes two series connected capacitors having respective values such that a voltage slightly higher than V2 in absolute value is imparted to the node common to the two capacitors.

Abstract: In order to provide an optical reflectivity test plate for calibrating and proving a radiometer, which test plate exhibits a near-Lambertian surface, a ceramic coating is bonded to a surface of a rigid substrate, such as a steel plate, and the ceramic coating is thereafter sandblasted with a fine abrasive (preferably 60 grit or finer). If ordinary silica or other relatively soft abrasive is employed in the sandblasting step, it must not have have been previously used. Test procedures for comparing the resultant test plates to a standard BaSO.sub.4 test plate in both the laboratory and outdoors are given.

Abstract: A display and printer subsystem for use in a sorting operation with sorting apparatus in which information can be displayed and labels printed for the catagories of materials resulting from the sorting operation is disclosed. The display and printer subsystem includes a microprocessor which develops and sends address, data and external control signals over system buses, a plurality of display units, and a plurality of printer units. Each display unit includes an alphanumeric display module responsive to the application of control, enable, and data signals to write specified characters in specified display positions. Each display unit also includes a logic interface circuit adapted to receive the address signals, the display unit using the address signals to select a particular display module. Similarly, each printer unit includes a printer responsive to data signals, control signals and enable signals for printing alphanumeric data at predetermined media positions.

Abstract: Apparatus is disclosed for incorporation in a central processing unit that permits a testing procedure to be executed on the central processing unit in a manner that simulates the normal operation of the central processing unit. The apparatus includes an auxiliary memory unit, in which the test programs are stored, and an auxiliary processor for controlling the central processing unit when the test procedure is initiated and for preparing the central processing unit for execution of the test procedures. Control apparatus of the central processing unit executes the test program retrieved from the auxiliary memory unit. The auxiliary processor regains control of the central processing unit after the test program has been executed, tests the results of the test procedure and returns control to the central processing unit.

Abstract: A range-finding binocular is disclosed which has substantially the external appearance and size of a conventional binocular. In each barrel, a system is provided for obtaining a projected image of a range-mark of circular symmetry which is focused in the focal plane of each eye lens at an accurately placed position near the visual axis of the monocular. The distance between the projected image and the visual axis is carefully controlled in order to provide, in stereovision, a sense of distance to the range-mark image which can be "placed alongside" a target of interest by changing the offset distance in a controlled manner. In one embodiment, the image is obtained by a backlighted reticle whose image passes between a transparent glass range-mark translation plate and a transparent glass adjustment plate, through a lens, and to a gold surfaced mirror for directing the projected image into the conventional path of the field of view.

Abstract: A golf putter has a substantially cylindrical club head made from a tough, resilient, non-metallic plastic material such as acetal polymer (e.g., Delrin or Celcon); has weight-receiving receptacles recessed in each of the heel and toe ends; and weight inserts within the weight-receiving receptacles. The diameter of the cylindrical club head, e.g., one and one-quarter inches, is smaller than the diameter of a ball to be played. A visual alignment mark extends circumferentially partially around the cylindrical body at a position equidistant between the heel and toe ends and thus, just toward the toe end from the position at which a conventional shaft is coupled to the club head.