Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 4758822 | Bidirectional amplifier A bidirectional amplifier for use in a transmission line, that utilizes a pair of interconnected bridge circuits including isolation transformers and a pair of unidirectional amplifiers. The transmission in each direction uses a single amplifier to amplif... | 07/19/1988 |
| 4677610 | Three-port conference circuit for use in a digital telephone system A three-port conference circuit for use in a pulse code modulated communication system including a first speaker register including an input connected to a telephone system information memory output and including an output, a second speaker register inclu... | 06/30/1987 |
| 4626629 | Digital multifrequency signal receiver A digital multifrequency receiver circuit of the type employed between telephone system central offices, arranged to provide a faster response to received signals by processing the received signal tones digitally. The faster response resulting from the el... | 12/02/1986 |
| 4603482 | Probe shield A touch probe for detecting contact with a workpiece or other object is disclosed on features a repositionable disc protective shield for the moveable portion of the touch probe. The shield includes a predetermined rest position while providing freedom of... | 08/05/1986 |
| 4600896 | Circuit for limiting jitter transients during switching of phase control signals to an oscillator A phase comparator is included with each incoming channel to compare the clock phase of the incoming signal and a local oscillator. The phase comparator of an on-line active unit generates a signal to control the oscillator to maintain its output in phase... | 07/15/1986 |
| 4590600 | Dynamic digital equalizer A level comparator is used to check the incoming message header pulse amplitude and if it is of a level higher than an established level a signal is transmitted to update a digital counter whose digital output is converted by a digital to analog converter... | 05/20/1986 |
| 4584696 | Transmission response measurement A circuit arranged to measure and correct for transmission line induced disturbances at discrete intervals after receipt of a header pulse by recording the presence of any voltage deviating from a set level. These levels are registered and during receipt ... | 04/22/1986 |
| 4581680 | Chip carrier mounting arrangement A leadless ceramic chip carrier for surface mounting on an epoxy printed circuit board is shown featuring an arrangement for relieving the thermally induced stress by progressively lengthening the attaching solder pillars as the distance from the center l... | 04/08/1986 |
| 4571532 | Photovoltaic power regulation system An apparatus for controlling the charge rate and voltage of storage batteries of a solar power generating system using a single voltage regulator module to monitor and control the state of charge of any number of cells of a battery and a number of solar m... | 02/18/1986 |
| 4561711 | Connector saver assembly An electrical connector having a base portion duplicating a printed circuit card edge having thereon contacts for mating with a card jack to which is mounted a printed circuit card jack on the edge away from the contact surfaces. The card edge connector p... | 12/31/1985 |
| 4558186 | Single power supply battery feed circuit A two amplifier subscriber line interface circuit that uses a novel voltage divider technique for providing power to the two lower voltage amplifiers from a 50 volt central office battery. This is achieved by using one lower power amplifier with a Zener r... | 12/10/1985 |
| 4553088 | Wiring pair reversal detector An alarm apparatus for use with a numerically controlled twisted pair wire wrap wiring machine that indicates to the operator the position and the wire of a pair that is to be wired. The apparatus is connected to the indicator lights of the machine and to... | 11/12/1985 |
| 4547100 | Adjustable milling cutter A cutting tool with precisely adjustable disposable cutting inserts. In the preferred embodiment of a face milling cutter, the tool utilizes insert holding cartridges mounted in cavities spaced about the periphery of the cutter body, each cartridge includ... | 10/15/1985 |
| 4544809 | Arrangement for subscriber line ring testing An arrangement for automatically testing a plurality of subscriber lines, which are operationally connected to an electromechanical switching system is shown. Operational service is to be transferred from the electromechanical switching system to a digita... | 10/01/1985 |
| 4539070 | Exposure of photo resist A method and apparatus for limiting the interference caused by shadows of minute particles of opaque matter that settles on the surface of an assembly of a metal substrate, a resist and an overlay by placing a second glass overlay on top of the assembly t... | 09/03/1985 |
| 4535533 | Cable connector seating tool A tool for facilitating the insertion of miniature cable connectors into mating receptacles from both top and bottom. The bottom includes guide arms to maintain the contact pins in proper alignment until entry into a mating receptacle is made.... | 08/20/1985 |
| 4429187 | Audio distributing system A system for distributing signals from an audio source to key telephone station instruments is disclosed. By controlling the impedance relationship between the station instruments, lines and amplifier output, cross-feeding of signals from one station inst... | 01/31/1984 |
| 4412712 | Circuit board positioning arrangement A circuit board positioning arrangement for multiple of circuit boards. Support apparatus maintains the circuit boards in a spaced parallel relationship while permitting movement of one board relative to another. Sequencing apparatus fixed to one of the b... | 11/01/1983 |
| 4398064 | Call-for-service and continuity sensor circuit A "call-for-service" and continuity sensor circuit for use with a trunk circuit of a digital PABX telephone system interfacing with a central office via ground start signaling providing for detection of a "call-for-service" signal to the PABX by the centr... | 08/09/1983 |
| 4394703 | Load protecting arrangement A protecting arrangement is dislcosed for multiple loads supplied from a single DC power source. Each load is monitored by a separate protection circuit. Detection of an over-current condition associated with one of the loads will cause the associated pro... | 07/19/1983 |
| 4386690 | Coin relay selector card An improved selector card assembly for use in a paystation coin handling mechanism wherein the polarizing magnet normally molded into the end of the card is mounted onto the card by a pair of tines and a central saddle like tongue portion. Thus leaving th... | 06/07/1983 |
| 4385230 | Digital temperature effect generator A circuit for simulating the effects of a temperature change in a digital transmission medium. The circuit generates lengthened or shortened frequency pulses digitally by operating a pulse counter to reset early for a shortened pulse or skip a timing puls... | 05/24/1983 |
| 4362957 | Clock pulse tolerance verification circuit A circuit arrangement for comparing a clock pulse train against a standard pulse train. The circuit includes an exclusive OR gate to which are inputted the pulse train to be tested, and a latch at the output of the gate, operated only upon a mismatch of t... | 12/07/1982 |
| 4360746 | Diode and varistor simulator An active circuit for modeling desireable diode and varistor characteristics in signal limiting circuits. The circuit includes a resistor arrangement for setting the desireable threshold voltage to an operational amplifier, the other input of which is con... | 11/23/1982 |
| 4308472 | Clock check circuit An apparatus adapted to check for the continuous presence of an incoming clock pulse train comprising an exclusive OR gate, to the input of which are coupled the clock pulse train and a second train of clock pulses delayed by one half the period of the in... | 12/29/1981 |
| 4298774 | Call waiting signal arrangement A telephone call waiting signal system as used in a processor controlled exchange, wherein reuse is made of an existing ringing supply bus and the signal relay in each subscriber's line equipment for applying a call waiting signal to the subscriber's line... | 11/03/1981 |
| 4274155 | Multiport conference circuit with multi-frame summing and voice level coding An improved conference circuit for use in a Pulse Code Modulation telephone switching system wherein a number of channels are combined so that a number of subscribers may participate in a common telephone conversation. The conference circuit is provided w... | 06/16/1981 |
| 4257120 | Multiport conference circuit with multi-frame summing An improved conference circuit for use in a Pulse Code Modulation telephone switching system wherein a number of channels are combined so that a number of subscribers may participate in a common telephone conversation. The conference circuit is provided w... | 03/17/1981 |
| 4254497 | Multiport conference circuit with voice level coding An improved conference circuit for use in a Pulse Code Modulation telephone switching system wherein a number of channels are combined so that a number of subscribers may participate in a common telephone conversation. The conference circuit is provided w... | 03/03/1981 |
| 4244018 | Interlock control of asynchronous data transmission between a host processor and a plurality of microprocessors through a common buffer An interlock circuit is set forth which provides for controlling asynchronous data transfers between a host processor and a plurality of microprocessors via a common buffer. The interlock circuit consists of an interconnection of latches arranged so that ... | 01/06/1981 |
| 4219697 | Automatic remote operate circuit A device for the remote turn on of a teletypewriter of a distant terminal, such as at a hotel or motel. The turn on circuit is connected to the communication line to operate a magnetically latching relay. The latching relay operates to turn on the alterna... | 08/26/1980 |
| 4201894 | Arrangement for conversion of random to fixed data channel format A private automatic branch exchange employing time division switching of digital signals, with provision for interfacing a fixed format data channel source to the randomly assigned channel allocation of the exchange. This is accomplished via channel buffe... | 05/06/1980 |
| 4201893 | Private automatic branch exchange telephone system with two data sources sharing a multiplexed data bus Groups of analog trunks are shown connected to analog to digital converters. The converters are each assigned a time during which their associated trunks may access a common data bus to the pulse code time division switching system. Provision is made for ... | 05/06/1980 |
| 4191857 | Digital trunk supervisory decoder multiplexor for ground start or E&M signalling on a common T1 span Digital Carrier Trunks connected via a supervisory decoding and multiplexing logic to an electronic digital PABX. The circuit is arranged to receive or transmit the supervisory signal in either the "Ground Start", E&M modes or a combination of both in eit... | 03/04/1980 |
| 4175215 | Multiport conference circuit An improved conference technique whereby a number of channels in a telephone switching system employing pulse code modulation for transmission purposes are combined so that a number of subscribers may participate in a common telephone conversation. The co... | 11/20/1979 |
