Abstract: A serial data interface circuit for converting serial digital information having one transmission rate into corresponding digital information of another transmission rate. Such an interface circuit provides a serial data receive section clocked at an incoming data rate and a serial data transmit section clocked at a desired transmission rate. Interposed between the sections is buffer means for asynchronously transferring data information from the receive section to the transmit section whereby a different receive and transmit rate are accommodated.

Abstract: The invention discloses an improved capacitor multiplier which can be applied in both floating coupling and in grounded decoupling applications.

Abstract: This disclosure depicts a non-linear adder circuit for teleconferencing. A pre-determined number of most significant bits (MSB) is utilized from a first PCM signal to select one of a plurality of PROMs. Each of the PROMs receives a second predetermined number of bits, other than the bits used for selecting from the first PCM signal, and the predetermined number of bits from a second PCM signal. The unique address locations within the PROMs of the first and second PCM signals are stored. From this address location a third PCM signal is outputted which is a non-linear addition of the first and second PCM signals.

Abstract: This disclosure depicts a novel apparatus for providing protection to armored personnel carriers such as tanks, or other military vehicles. The invention comprises a series of rectangular armor plates mounted to the surface area of the vehicle. The armor plates adjacent one another and each plate is secured to the tank surface by a threaded fastener. The threaded fasteners maintain the plates a predetermined distance from the tank surface and maintains the plates in a substantially parallel relationship to the surface of the tank wall. Each plate has three separate tiles adhered together, one tile comprising a steel material, one tile a soft material and one tile a thermally dissipating ceramic. The means for mounting the plates to the tank surface are designed such that the energy required to break the threaded fastener upon impact by a projectile is less than the energy required for the projectile to penetrate the plate.

Abstract: A connector for fitting on a printed circuit board wire wrapped terminal post. The connector has a contact finger which is spring biased against the terminal post, so that for several of the connector-post combinations, a ribbon cable can be held inserted between the contact fingers and their associated posts. The contact fingers make connection with the conductor of the ribbon cable. In another embodiment, the connector makes connection between a wire wrapped terminal post and a contact on the printed circuit board.

Abstract: A balance toy in the form of a body having a top portion, a bottom portion and a plurality of sections therebetween. The intermediate sections are rotatable with respect to each other about a common axis in the form of an elongated rod connecting the top and bottom portions. At least some of the sections are provided with a weighted portion spaced from the axis. The toy will be tilted unless the weighted portions are arranged so as to counterbalance each other.

Abstract: A high-frequency negative resistance circuit for use in a voltage controlled crystal oscillator has a pair of input terminals thereby defining an input current and input voltage. The high-frequency negative resistance circuit includes a sensing circuit for sensing the input current, a biasing voltage source and a load impedance connected to the voltage source. The high-frequency negative resistance circuit further comprises a current mirror circuit connected to the sensing circuit and to the load impedance for producing a current in the load impedance. The current in the load impedance is approximately equal to the input current. The current mirror circuit also controls the sensing circuit to cause the input voltage to decrease as the input current increases. Decreasing input voltage with increasing input current defines the negative resistance. When this negative resistance circuit is configured with a crystal and a voltage controlled capacitance, an oscillator capable of high-frequency operation results.

Abstract: This disclosure depicts a telecommunication supervision system, such as a supervisory progress signal detector, for evaluating the status of an input signal from a communication channel. An output channel is outputted when the input signal exceeds the threshold reference, and the channel signal is analyzed to determine the identity of the particular cadence of the input signal.

Abstract: A multiple position switch includes a housing containing a plurality of membrane switches located in a predetermined pattern. A spring-based, normally centered actuator is mounted in the housing for selective movement to actuate one of the switches. A finder plate is attached to the housing and has a notched circular opening in alignment with the plurality of switches. The actuator is guided to a selective switch location by its engagement with one of the finder plate notches when the actuator is moved in close proximity to a selective switch location.

Abstract: Asymmetrical time division multiplex switch for use in a nonblocking switch matrix. This design reduces parts required to configure the switch matrix since the prior art typically uses symmetrical switches wherein one of the inputs and outputs of a plurality of switches are connected in parallel to perform the total switch matrix function. The asymmetrical design reduces parts count and accordingly increases reliability of the total device.

Abstract: A football blocking device for training defensive linemen to react to the snap of a football and to charging offensive linemen, wherein the device comprises at least one blocking dummy and a ball object positioned adjacent the blocking dummy. The ball object is moveable rearwardly and the blocking dummy is moveable from a set position forwardly and downwardly to a blocking position to thereby simultaneously simulate the snap of a football and the charge of an offensive lineman. The device optionally includes a mechanism for turning the blocking dummy while it moves forwardly and downwardly to simulate a charging offensive lineman who is also turning.

Abstract: This disclosure depicts a novel compact electric door opener for use in a hollow metal door frame having an opening and two tabs adjacent the opening. The electric door opener comprises a housing, a solenoid contained within the housing, a conical spring attached to the solenoid, an armature pivotally attached to the housing and in contact with the conical spring. The armature has a latch engaging surface. A pivotable latch is attached to the housing and a portion of the latch contacts the latch engaging surface of the armature. The latch is restrained from pivoting by the armature except when the solenoid is energized. A temporary means for holding the housing and a means for securing the housing to the tabs of the door frame is also provided. The temporary means for holding the housing is removed after the means for securing has attached the housing to the tabs of the door frame.

Abstract: A switching regulator with controlled simulated load has a control which connects and disconnects the simulated load to the output of the regulator. The control is responsive to an error signal of a first comparator. A second comparator receives the output of said first comparator and produces a control signal for the simulated load when the regulator output reaches a predetermined level.

Abstract: A telecommunication switching system utilizing immediate-start type trunks assures the collection of dial pulse information in receiving registers, via a network connection, by employing a dial pulse delay within each such trunk circuit for holding dial pulses a predetermined period of time before transferring the pulse information to the registers via the established network connection.

Abstract: This disclosure depicts a novel cable clamp for use with a non-metallic electrical outlet box having rectangular apertures in the walls thereof and for securing a non-metallic sheathed electrical cable to the electrical outlet box. The cable clamp comprises a substantially U-shaped base which is slightly larger than the rectangular aperture in the wall of the electrical outlet box and first and second claw members attached on opposite sides of the base for securing the electrical cable after the cable clamp is positioned on the electrical cable and one of the claw members is inserted through the rectangular aperture in the wall of the electrical outlet box. The cable clamp securely holds the cable in position when either pushing or pulling tension is applied to the cable.

Abstract: A medical power service column for use in a hospital room for supplying electrical power, lighting and gases and also for providing a centralized support for medical equipment. The medical column comprises a base, a wall enclosure and a top cover all having a unique flat-cornered cross-sectional shape. The flat-cornered triangular shape of the medical column allows free access to a patient in a hospital bed while supporting medical equipment in close proximity to the patient.

Abstract: This disclosure depicts a novel method and system for crimping an elongated malleable metal connector onto two cables or the like and deforming the connector so that in its final crimped condition it is of generally a semi-cruciform/semi-circular shape in transverse cross-section with offset tap cable lodgment.

Abstract: This disclosure depicts a novel apparatus for securing an electrical cable in an electrical outlet box having one or more openings in the walls or bottom of the electrical outlet box. In particular, this apparatus, a cable locking device, comprises: a base portion; a flexing member having a first end of the flexing member attached to a first end of the base, the flexing member also having an aperture for receiving an electrical cable; a locking section attached to a second end of the flexing member; a cable engaging portion extending from the locking section towards the base; and a cable contact section on a second end of the base. The cable locking device fits into the opening in the electrical outlet box and locks the electrical cable into position.

Abstract: A method of producing encapsulated coils includes positioning a coil of wire on a inner coil adjacent one end thereof, positioning a metallic ring on the opposite end of the coil and surrounding the coil with an outer mold having a closed bottom, a resinous material is introduced to encapsulate the coil and provide a reservoir of excess resinous material which is then cured and the shrinkage is accommodated by the excess material above the ring. The encapsulated coil, ring, and excess material are removed from the molds and the ring and excess material are separated using a hammer to produce a finished encapsulated coil.

Abstract: This disclosure depicts a novel environmentally sealed and manually controlled swivel unit for use in an adjustable lighting fixture. The swivel unit comprises a base, a housing, a swivel ball device and a swivel ball controller. The swivel unit further comprises a tension means for forcing the swivel ball controller against the swivel ball device, and, in turn, for forcing the swivel ball device against a shoulder of the housing. This defines a predetermined lamp-holding force. The swivel ball controller allows the swivel ball device to rotate about a first axis and also to rotate about a second axis perpendicular to the first axis. The swivel ball device and the shoulder on the housing form an environmentally sealed juncture. The predetermined lamp-holding force retains the swivel ball device at any selected position while allowing easy manual movement of the swivel ball device.