Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5819250 | Method and system for multimedia interaction with a database A method and system for interacting with a database via multiple types of media where the database includes data lacking a format for use with each of the media. The method includes selecting data to be accessed, selecting one of the media for providing a... | 10/06/1998 |
| 4868430 | Self-correcting digitally controlled timing circuit A digitally controlled timing circuit for providing an output pulse signal precisely delayed with respect to an input signal irrespective of the time of occurrence of a system clock, but which uses the precision of the system clock to self-correct any ina... | 09/19/1989 |
| 4866838 | Integrated circuit chip insertion and removal tool A tool for inserting and removing a component, such as a programmable gate array integrated circuit (PGA IC) chip. At least two blocks are mounted on a threaded rotatable shaft, the shaft for causing relative movement between the blocks when rotated. Resi... | 09/19/1989 |
| 4867695 | Circuit board separation device The subject invention is a separation device for first and second generally parallel printed circuit boards connectable by a plurality of pins projecting normally thereto. The separation device comprises a first member attachable to the first board and ha... | 09/19/1989 |
| 4866570 | Apparatus and method for cooling an electronic device The subject invention is an apparatus and method for cooling an electronic device. The apparatus comprises a vessel having upper and lower regions and inlet means for delivering a flow of cooling fluid to the upper region. The apparatus also includes mean... | 09/12/1989 |
| 4865331 | Differential temperature seal A simple, yet fluid tight seal for a cryogenic enclosure. The seal between two portions of the enclosure becomes tighter as the temperature is lowered because both portions contract against a third member which does not contract with temperature to the sa... | 09/12/1989 |
| 4864488 | Single level D.C. output voltage power supply A power supply for producing a single level D.C. output voltage in response to a 110 or 220 A.C. input voltage is disclosed. The power supply automatically selects a full wave diode bridge or voltage doubler configuration and provides series capacitors to... | 09/05/1989 |
| 4856023 | System for maintaining low bit error rate in a starcoupled network of direct coupled stations A data process system has a plurality of stations or terminals linked to a star coupler over cables comprising separate sending and receiving transmission lines, the cable shield being connected to system ground. To minimize bit error rate when a station ... | 08/08/1989 |
| 4852357 | Cryogenic liquid pump A pump and method for delivering a cooling fluid from a reservoir of fluid to a destination is disclosed. The pump comprises a vessel for holding fluid to be delivered, the vessel being submersible within the reservoir. The vessel has a fluid inlet near i... | 08/01/1989 |
| 4844117 | Fluid level controller A fluid level controller having a thermal expansion element in the form of cylinder made from polytetrafluoroethylene. The cylinder is located in a container which is connected to a supply of cryogenic fluid by a ball valve. When the cryogenic fluid in th... | 07/04/1989 |
| 4841160 | Power supply switching circuit The subject invention is a power supply having an input for receiving a power signal, a DC storage device connected to the input, a primary output connected to the DC storage device and connectable to a battery, a DC to DC converter for converting the vol... | 06/20/1989 |
| 4841343 | Dry film development process for an aperture card printer Line broadening is eliminated in dry heat-developed films by using a development temperature which is higher than the manufacturer-recommended standard temperature, so that a much shorter development time can be used, and masking the edges of the film to ... | 06/20/1989 |
| 4823024 | Signal edge trimmer circuit A MOS circuit for trimming a digital pulse signal by delaying the rising edge of the pulse signal for a predetermined period of time and passing the falling edge without delay. The circuit includes two MOS output transistors and a signal buffer. The signa... | 04/18/1989 |
| 4815979 | Right angle electrical connector with or without wiping action An improved connector for attaching a mother board to a daughter board, having a slotted housing, a slotted elastomeric member, and a flexible circuit with numerous conductors. The flexible circuit is wrapped around the elastomeric member with its two fre... | 03/28/1989 |
| 4800422 | Frostless interface supercooled VLSI system A double walled vessel having a styrofoam filling between the double walls internally supports a semiconductor circuit to which is attached at least one flat ribbon cable. The semiconductor circuit is immersed in liquid nitrogen with at least one flat rib... | 01/24/1989 |
| 4780805 | Low/high input voltage power supply A power supply which automatically configures itself to correctly respond to either a low or a high level of an A.C. supply voltage to supply a single level D.C. output voltage. The supply switches between a voltage doubler and a full wave rectifier opera... | 10/25/1988 |
| 4777495 | Aperture card plotter A plotter for recording data from a modulated laser beam onto a recording medium mounted covering the aperture of an aperture card wherein the aperture is located toward one end of the aperture card with a blank margin on either side of the aperture, the ... | 10/11/1988 |
| 4583161 | Data processing system wherein all subsystems check for message errors A data processing system employing broadcast packet switching and having a plurality of subsystems and a system bus for linking the subsystems. The subsystems are grouped within stations that are each enclosed by a computer cabinet. The system bus include... | 04/15/1986 |
| 4533569 | Process preventing air bubble lock in ink jet nozzles A process for treating the interior surface area of a glass nozzle for use in an ink jet printer device. The process includes cleaning of the surface area with a hydrofluoric acid solution under controlled conditions, rinsing and then protecting the clean... | 08/06/1985 |
| 4494185 | Data processing system employing broadcast packet switching A data processing system employing broadcast packet switching and having a plurality of subsystems and a system bus for linking the subsystems. The subsystems are grouped within stations that are each enclosed by a computer cabinet. The system bus include... | 01/15/1985 |
| 4493137 | Method of making a drive element assembly for ink jet printing Described is a piezoelectric drive element assembly for use in ink jet printer devices. The assembly comprises a piezoelectric drive element, which is characterized by a pair of electrodes spaced apart and thereby electrically isolated from one another on... | 01/15/1985 |
| 4488354 | Method for simulating and testing an integrated circuit chip A method and apparatus for simulating custom chips to be used in a data processing system. Each chip is simulated by a chip simulator that includes a mother board and a plurality of baby boards mounted and interconnected on the mother board. Each baby boa... | 12/18/1984 |
| 4438667 | Sharpening device for a chain saw A sharpening device for supporting a file for sharpening the cutting elements of a chain saw. The device includes a base portion that is removably secured to the chain bar of the chain saw, and a top guide portion slidably mounted on the base portion and ... | 03/27/1984 |
| 4417334 | Data processing system having dual-channel system bus A data processing system employing broadcast packet switching and having a plurality of subsystems and a system bus for linking the subsystems. The subsystems are grouped within stations that are each enclosed by a computer cabinet. The system bus include... | 11/22/1983 |
| 4417286 | Data window expander circuit in a data recovery system A data recovery system for use in recovering data encoded in a double frequency code on a magnetic disc device includes a data window expander circuit. The data recovery system recovers both separated data and separated clock signals. The separated data s... | 11/22/1983 |
| 4412232 | Ink jet printer An ink jet printer includes a print head having a plurality of piezoelectric driving elements selectively energizable to cause ejection of droplets of ink through nozzles in a nozzle plate. Ink is supplied to the print head from an ink reservoir which is ... | 10/25/1983 |
| 4400049 | Connector for interconnecting circuit boards A connector for connecting coplanar circuit boards in an edge-to-edge fashion. The connector has a housing with a circuit board receiving cavity extending through and between opposite faces of the housing. The cavity has two opposing side walls which supp... | 08/23/1983 |
| 4397014 | Bidirectional pulse generator for video disc stylus deflector transducer A bidirectional pulse generator suitable for driving a video disc stylus deflector transducer. A differential amplifier is arranged with both its inverting and non-inverting input terminals connected for receiving a prescribed pulse waveform. First and se... | 08/02/1983 |
| 4392704 | Low insertion force printed circuit card connector An edge connector wherein an insulated base defines an elongated opening and an insulated carrier is slidably mounted to the base. The carrier is provided with an elongated opening for receiving a printed circuit board. A series of conductors are pivotly ... | 07/12/1983 |
| 4387441 | Data processing system wherein at least one subsystem has a local memory and a mailbox memory within the local memory for storing header information A data processing system employing broadcast packet switching and having a plurality of subsystems and a system bus for linking the subsystems. The subsystems are grouped within stations that are each enclosed by a computer cabinet. The system bus include... | 06/07/1983 |
| 4387388 | Package and connector receptacle A connector assembly for connection to a computer backpanel or the like includes a leadless integrated circuit package and a connector receptacle for receiving the leadless package. The leadless package has two insulating layers and outwardly extending co... | 06/07/1983 |
| 4371952 | Diagnostic circuitry for isolating a faulty subsystem in a data processing system A data processing system that has a plurality of subsystems connected to a system bus includes diagnostic circuitry for isolating a fault at one of the subsystems. The diagnostic circuitry includes a multiplexer at the output gates of each subsystem to th... | 02/01/1983 |
| 4361634 | Artwork master for production of multilayer circuit board A multilayer printed circuit board structure and a method for generating artwork masters for the manufacture thereof. The multilayer board comprises universal internal layers of predefined circuit patterns. The internal layers include power and ground pla... | 11/30/1982 |
| 4355366 | Circuitry for minimizing auto-correlation and bias in a random number generator A random number generator that provides bits at its output that are neither biased nor periodic. The generator includes a noise generator and sampling register that provide serial, randomly varying bits. A circuit within the generator for reducing auto-co... | 10/19/1982 |
| 4352100 | Image formatting apparatus for visual display Image formatting apparatus for a visual display where image data is stored in an addressable memory and is read out in selectable format with masking of desired areas of the display screen being controllable so as to change image contrast and/or to provid... | 09/28/1982 |
| 4339804 | Memory system wherein individual bits may be updated A memory system having a word-addressable memory and bit changing circuitry for changing or updating individual bits within the data words stored in the memory. The memory includes a primary memory and a copy memory. The copy memory stores duplicates of t... | 07/13/1982 |
| 4319356 | Self-correcting memory system A self-correcting memory system includes internal error detection and correction circuitry that periodically accesses each data word and a group of ECC check bits associated with each data word stored in the memory system. The error detection and correcti... | 03/09/1982 |
| 4315313 | Diagnostic circuitry in a data processor Diagnostic circuitry for use with the processor of a data processing system. The diagnostic circuitry includes a control register execution log for receiving control store addresses from a control register associated with an "EXECUTE+1" stage. A log point... | 02/09/1982 |
| 4315312 | Cache memory having a variable data block size A cache memory has a data buffer for storing blocks of data from a main memory and an index for storing main memory addresses associated with the data blocks in the data buffer. The size of the blocks of data stored in the data buffer can be varied in ord... | 02/09/1982 |
| 4291407 | Parity prediction circuitry for a multifunction register Parity prediction circuitry for use with a multifunction register. The parity prediction circuitry includes a parity prediction circuit associated with each function of the register. A selecting multiplexer selects the parity prediction circuit that will ... | 09/22/1981 |
