Bizarre Patents
Mouthguard made at least partially from an edible candy
A mouthguard includes a U-shaped upper bite plate which removably fits over upper teeth of a person, with the entire upper bite plate being made from a soft, deformable and edible gummi candy.
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| Number | Title | Issue Date |
| 7136457 | Aircraft cabin telephony test unit A test unit for an aircraft cabin telephony system includes a pair of connectors for inserting the test unit in-line within the system; an AC voltage module that is operative to indicate the presence of an AC voltage when the test unit is connected to the Cabin Deli... | 11/14/2006 |
| 7031435 | Method and apparatus for simultaneous line-interface wiring collision detection A method uses circuitry in a data interface that provides telephony service over a high-speed network to detect the presence of a secondary source of VBH battery voltage on a tip-ring system. If a detected source other than the data interface is impressing battery v... | 04/18/2006 |
| 7020248 | Apparatus and method for testing subscriber loop interface circuits A method and apparatus for internally testing portions of a subscriber loop interface circuit. Testing may be conducted on a semiconductor circuit including the subscriber loop interface circuit. The portion of the subscriber loop interface circuit being tested may ... | 03/28/2006 |
| 6826155 | Apparatus and method for facilitating standardized testing of signal lines The present invention provides for an apparatus and a method for testing and evaluating a transmission line. A set of command and data signals is received through an input/output interface. The command and data signals from the input/output interface are processed f... | 11/30/2004 |
| 6788953 | Wireless local loop communication system using SLIC module A telephone communication system having a cordless telephone operating in conjunction with a cellular transceiver. A subscriber line interface circuit (SLIC) is controlled by a microprocessor in the cellular transcriber. The SLIC can be controlled to provide standar... | 09/07/2004 |
| 6587544 | Method for measuring a load impedance Method for measuring a load impedance (ZL) of a load circuit which is connected to an SLIC circuit (6) of an analog terminal connection of a terminal device, having the following steps: specifically a digital toll signal (x1) is gene... | 07/01/2003 |
| 6567501 | Method and a system for transmitting alarms A method for transferring alarms, in which method a pre-determined area (1) is monitored by a monitoring device (24) connected to a subscriber line (10, 12, 14); the condition of the subscriber line (10, 12, 14) is monitored by line testing; when the ISDN... | 05/20/2003 |
| 6522723 | Telephony line test unit and method A telephony test system (34) has a communication interface (52, 54, 56) connected to communicate with a remote terminal (16). In response to receiving an electrical test request signal from the remote terminal (16), a controller (50) causes an analog-to-d... | 02/18/2003 |
| 6411680 | Telephonic apparatus and input device for telephonic apparatus A telephonic apparatus comprises terminals for connecting it to respective electric cables, telephonic circuitry, and a switch between the terminals and the circuitry. It also includes a sensor for detecting a DC voltage above a first level between said t... | 06/25/2002 |
| 6320940 | Network termination device with automatic detection and correction of circuit polarity A network termination device which will operate correctly even if its connection to a central office has reverse polarity. A network termination device at customer premises is connected to a line termination device located at a central office via a two-wi... | 11/20/2001 |
| 6160405 | Method and apparatus for remotely changing signal characteristics of a signal generator A detector and a variable signal generator are coupled so that one or more specific changes in the output of the detector will cause a change in the characteristics of the generated signal. This change in signal characteristics is non-transient, the chang... | 12/12/2000 |
| 6144722 | System and method for programmable telephone subscriber line test in ring mode A system and method for providing software-implemented, programmable testing of telephone subscriber line power conditions during ring mode. A user-controlled fault detection system for detecting subscriber line faults, including resistive faults and fore... | 11/07/2000 |
| 5933011 | Ground path testing A method and device for testing the quality of a ground path, particularly although not exclusively for a telecommunications system. The device has terminals for connection to respective lines, such as tip and ring. A terminal is provided for connection t... | 08/03/1999 |
| 5889837 | Testing a subscriber terminal of a wireless telecommunications system A subscriber station provides the wireless connection of user telecommunications equipment to a remote central station of a wireless telecommunications system. The subscriber station includes a transmitter/receiver for wireless communication with a centra... | 03/30/1999 |
| 5881129 | Self-monitoring line interface circuit A line circuit whose circuit components are selectively controllable by a microprocessor/DSP to provide normal BORSCHT functions or to be selectively tested without need for an electromechanical relay to isolate the line circuit from the loop conductors. ... | 03/09/1999 |
| 5881128 | Technique for preventing data stored in a memory of telephone system from being corrupted during power failure A circuit for preventing data stored in a memory of a telephone system from being corrupted including: a memory for receiving a plurality of control signals from the processor and for storing received data; a decoder connected to a chip enable terminal of... | 03/09/1999 |
| 5859894 | Self-diagnostic system for cellular-transceiver systems with remote-reporting capabilities A self-diagnostic system for a checking all functions of a cellular-transceiver system having a cellular-interface unit, which interface unit couples a standard telephone set to a cellular transceiver, which interface unit converts the DTMF or pulse-type ... | 01/12/1999 |
| 5818926 | Switching device for telecommunications channel A switching device for a telecommunications channel. The device comprises a voltage detector, a switch, and a storage device. The voltage detector produces an output voltage if the voltage between the lines of the channel exceeds a predetermined level, fo... | 10/06/1998 |
| 5802170 | Customer bridge module A customer bridge module for connecting telephone company wiring and subscriber telephone wiring in a telephone network interface apparatus, the customer bridge module having a plug-actuated switchable socket and an overcurrent protection circuit, a half-... | 09/01/1998 |
| 5802151 | Telephone interface protection circuit and modem using same A telephone interface protection circuit and modem incorporating the telephone interface protection circuit. The circuit includes a sensing circuit and a determining circuit. The interface protection circuit checks for an active telephone line and checks ... | 09/01/1998 |
| 5796789 | Alerting device for telephones A telephone alerting device for connection to a telephone line and a telephone. When the telephone is off-hook, the device will generate a visual and an audio alarm if an additional telephone connected to the same line also goes off-hook, thereby providin... | 08/18/1998 |
| 5778050 | Portable line test telephone The portable line test telephone of the present invention consists of the switching means to operate different kinds of tests, the high voltage generating means to measure telephone capacity and insulation resistance, the dialing means to call and the cal... | 07/07/1998 |
| 5778048 | Feed imbalance detector in repeated line A feed imbalance detector in a repeated line for detecting a feed imbalance in a PCM repeated line and for displaying an alarm includes: a constant current feeder for transmitting an operating voltage to the repeated line; a virtual ground unit for detect... | 07/07/1998 |
| 5768365 | Circuit for sensing telephone line conditions A circuit for sensing telephone line conditions, comprising: high impedance termination means across the telephone line; means for accumulating charge through the high impedance termination means; and electrical isolator means intermediate the means for a... | 06/16/1998 |
| 5764727 | Metallic access test extender A metallic access test extender includes an office unit and a remote unit coupled to the office unit via a digital transmission system. A voltage controlled current source is included in the office unit and a voltage controlled voltage source in the remot... | 06/09/1998 |
| 5661777 | Loop detection signal issuing circuit in subscriber circuit having on-hook transmission facility A circuit for issuing a loop detection signal in a subscriber circuit which sends information in the form of an AC signal to a subscriber while applying a bias voltage to the subscriber line by an on-hook transmission signal during idle intervals of a rin... | 08/26/1997 |
| 5638440 | Protection circuit for telephone systems A power-cross detection circuit includes a zero crossing detection circuit for detecting a first zero crossing of the current from a first positive half-cycle to a first negative half-cycle, a second zero crossing of the current from a second positive hal... | 06/10/1997 |
| 5606592 | Method and apparatus for analyzing resistive faults on telephones cables Resistive faults are analyzed on a conductor in a telephone line by first charging the conductor to an initial voltage. The conductor is allowed to float for a finite amount of time, allowing some of the charge on the conductor to leak through any resisti... | 02/25/1997 |
| 5577098 | Data transmission system and method having improved alarm inhibiting function A first terminating unit terminates a subscriber line at a first end of the line, the first terminating unit being connected to a public telecommunication network. A second terminating unit terminates the subscriber line at a second end of the line, a ter... | 11/19/1996 |
| 5469494 | Self-diagnostic system for cellular-transceiver systems A self-diagnostic system for a checking all functions of a cellular-transceiver system having a cellular-interface unit, which interface unit couples a standard telephone set to a cellular transceiver, which interface unit converts the DTMF or pulse-type ... | 11/21/1995 |
| 5465287 | Subscriber line impedance measurement device and method A device and method for line impedance measurement using a multi-frequency test signal waveform in a signal injection technique featuring analysis of acquired line test response data. A multi-frequency test signal waveform is injected into the susbscriber... | 11/07/1995 |
| 5438606 | Open power loop detector for transmission line elements An open power loop detector for digital transmission line elements using a pulsed, direct current test. The element detects when a fault in transmission lines has been corrected and the element should move from a loop powered mode back to a normal through... | 08/01/1995 |
| 5390231 | Protection and recovery of telephone line interface circuits An automatic protection and recovery method for a telephone line interface circuit is described. The interface circuit monitors current on the line, and in the event of a fault producing an excessive current a protection relay interrupts a connection of t... | 02/14/1995 |
| 5222119 | Communication system and a method, to detect a power exposure of a communication line A telephone system comprises a multi-channel transmission apparatus for connecting a subscriber line to a telephone exchanger, where the transmission apparatus comprises: a subscriber interface for interfacing said subscriber line; a detecting circuit in ... | 06/22/1993 |
| 4864598 | Loop status verification system A system is disclosed for verifying the integrity of each one of a number of communication paths, illustratively telephone subscriber loops, that runs between a near end location, illustratively a telephone central office, and corresponding remote ("far e... | 09/05/1989 |
| 4754472 | Telecommunication systems A telecommunication system of the kind having a telephone handset connected to an exchange via a line incorporates a beacon (22) in the line for receiving a question signal from test equipment associated with the exchange and for sending an answer signal ... | 06/28/1988 |
| 4679224 | Telephone line testing circuit A telephone line testing circuit for determining whether a fault exists on a telephone line entering a customer's premises or whether the fault exits in the customer's wiring and equipment. The testing circuit comprises a test switch, a polarity detector,... | 07/07/1987 |
| 4670897 | Circuit testing of telephone grids or the like Multiple electrical path assembly as in a telephone grid, is rapidly and accurately checked by grounding one end of all but one of the path conductors, applying a test signal to that one end, detecting the presence or absence of signal on both ends of all... | 06/02/1987 |
| 4631475 | Method of detecting hazardous line voltages over a two-wire line A method of detecting hazardous line voltages over a two-wire line for transferring digital information. At one end, the line is terminated by a hybrid coupler (G) and an apparatus for adaptive echo elimination. This apparatus generates a digital signal (... | 12/23/1986 |
| 4595796 | Method of and a circuit arrangement for determining current criteria in the lines of a telephone system A method of and a circuit for determining current criteria in a subscriber's loop of a telephone system are described. Two constant-current sources are symmetrically connected to two wires of the loop and are controlled by an adjustable reference voltage ... | 06/17/1986 |
