Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 5130881 | IC socket having overvoltage protection An IC socket having internal MOV devices for protecting an integrated circuit from damage due to transient overvoltages. Each MOV device is coupled between a lead of the socket and a common metallic grounding strip contained within the IC socket. The grounding... | 07/14/1992 |
| 5077629 | Switch with pre-alarms means In a switch with pre-alarm means (101) having pre-alarming apparatus (20, 21) and an indicator (103) for alarming that value of current flowing on a load is above a predetermined alarming level, output of the pre-alarming apparatus is held at a predetermi... | 12/31/1991 |
| 4849847 | Power supply switch for wafer scale applications An adjunct switch circuit is provided for detecting power to ground leaks in a portion of a chip circuit and for disabling such circuit portion in the event of a leak. The switch circuit of the invention is particularly useful for Wafer Scale Integration,... | 07/18/1989 |
| 4827369 | Circuit interrupter apparatus with a selectable display means A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the ope... | 05/02/1989 |
| 4823225 | Bipolar immersion detection circuit interrupter An immersion detector comprises a pair of spring biased circuit breaking contacts for removing power from an appliance. The appliance has a sensing circuit which may become energized if it is dropped into a body of an electrically conductive liquid, such ... | 04/18/1989 |
| 4816955 | Robot joint with an electric drive motor Robot joint with an electric drive motor (30), a limit switch (36) for a safety shut off of the same, and a sensor (100) for the zero position-scanning of the joint. The limit switch (36) is actuated by annular segment like platform pieces (50) which are ... | 03/28/1989 |
| 4814931 | Apparatus and method for timed-de-icing An all solid state timer-controller for the timed, sequential application of electrical current to loads within a circuit at high amperage, the circuit finding utility in the application of electrical current to de-icers employed aboard aircraft.... | 03/21/1989 |
| 4814631 | Electrical power supply having a variable output An electrical power supply having a variable output, the power supply comprising one pair of sources of e.m.f., these sources being interconnected in parallel, each portion of the parallel circuit comprising the source being connected in series with a dio... | 03/21/1989 |
| 4812941 | Capacitor and method of manufacture A capacitor for a AC applications is manufactured from zinc alloy metallized polypropylene sheet material. The sheet material is wound into one or sections having a roll-shape, which sections are placed within a metal container and provided with electrica... | 03/14/1989 |
| 4811153 | Circuit protector A magnetically operated circuit protector utilizing magnetizable reed contacts, primarily reed switches; in combination with a network of coil windings which results in positive trip and reset action; arc suppression; local and remote trip indication; ove... | 03/07/1989 |
| 4811155 | Protection circuit for a semiconductor integrated circuit having bipolar transistors Two resistors are connected in series between an input bonding electrode and an internal circuit, and respective conducting terminals of a first bipolar transistor are connected between the two resistors and a GND bonding electrode which is connected to t... | 03/07/1989 |
| 4809124 | High-energy low-voltage surge arrester This surge arrester is for protecting against high-energy and very fast surges and comprises first and second electrodes and a metal oxide varistor (MOV) disk between the electrodes. Each electrode has a central region and, at generally diametrically-oppo... | 02/28/1989 |
| 4809125 | Circuit interrupter apparatus with a style saving rating plug A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the ope... | 02/28/1989 |
| 4809135 | Chip carrier and method of fabrication A ceramic chip carrier comprising a ceramic substrate and a copper lead frame directly bonded to the substrate, the lead frame being formed to provide leads in fringe regions beyond the edges of the substrate which are connected together by a removable ri... | 02/28/1989 |
| 4809019 | Character generator for thermal printers A character generator for use in a printing system such as a thermal printing system, which is capable of printing characters with uniform contrast is provided. The character generator comprises a first section for containing therein a desired character p... | 02/28/1989 |
| 4807080 | Integrated circuit electrostatic discharge input protection Protection of the thin gate oxide of MOS field effect transistors from irreversible puncture due to undesired high voltages and currents generated by electrostatic discharge through handling or otherwise, is provided by a circuit structure at each input p... | 02/21/1989 |
| 4803586 | Voltage control module A wall box mounted remotely operated voltage module utilizing a low voltage DC control signal which is remotely generated. A power semi conductor device is triggered to deliver a predetermined amount of power from the source of AC electrical power to a lo... | 02/07/1989 |
| 4803588 | Surge arrester An underoil surge arrester (10) having metal oxide varistor disks (12) held in place by flexible spring clips (18).... | 02/07/1989 |
| 4802055 | Transient voltage surge suppressor A transient voltage surge suppressor including first and second clamping stages with a surge reactor between the stages. The first stage comprises a metal oxide varistor and the second stage comprises a silicon surge suppressor diode. The surge reactor co... | 01/31/1989 |
| 4797773 | Spatial array filtering system for electrical devices A method and apparatus for protecting electrical circuits by suppressing voltage and/or current transients while simultaneously filtering unwanted noise, such as electromagnetic interference (EMI), at specially selected frequencies, by controlling the spa... | 01/10/1989 |
| 4796142 | Overload protection apparatus for emulating the response of a thermal overload A thermal overload detector and interrupter has a current transformer for monitoring load current and providing a current value signal, a microprocessor for calculating values related to load current and the thermal characteristics of a load, and an inter... | 01/03/1989 |
| 4794484 | Circuit interrupter apparatus with a style saving override circuit A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the ope... | 12/27/1988 |
| 4792877 | Electric motor armature current control circuit An electric motor armature current control circuit includes an electric motor with an armature in series with a protective device comprising a pair of polymer PTC elements connected in electrical series with the motor armature windings and in electrical p... | 12/20/1988 |
| 4791520 | Fault protection for a medium voltage transformer branch A fault protection system for a power circuit composed of a main current path and a plurality of parallel branch paths connected in series with the main current path and each containing a winding of a medium voltage transformer, which system includes: fir... | 12/13/1988 |
| 4789918 | Fastened lightning protection repair system and method for its use A lightning protection repair system for graphite epoxy structures. An aircraft graphite epoxy structure is repaired by fastening a repair plate over the hole to be covered, followed by a dielectric sheet covering the outer surface of the metal repair pla... | 12/06/1988 |
| 4789917 | MOS I/O protection using switched body circuit design Switched body circuitry is provided to prevent a system I/O from being effected by the loss of power supply or ground to an MOS integrated circuit within the system. A semiconductor substrate of a first conductivity type has formed therein a well region o... | 12/06/1988 |
| 4788618 | High voltage protecting circuit A high voltage protecting circuit in a cathode ray tube apparatus which comprises a main power switch adapted to be connected in series with an electric power source, a flyback transformer having primary, secondary and third windings, a rectifying circuit... | 11/29/1988 |
| 4782419 | Inhibitable static switch for an AC electric circuit including an inductive load A static switch is provided for controlling the closing and opening of an AC electric circuit including an inductive load. This switch includes an inhibitable thyristor having an RCD network for protection against the voltage gradients on turn-off. The an... | 11/01/1988 |
| 4781099 | Musical quiz apparatus A musical quiz apparatus presents a question chord in sound and a trainee answers by depressing the keys of the chord constituting notes on the keyboard. The apparatus is capable of generating a plurality of different chord data respectively representing ... | 11/01/1988 |
| 4782421 | Electrical supply line protection apparatus Teed circuit protection is provided by a master unit at one terminal and slave units at the other terminals with broad band communication links between the master unit and the slave units. All units include line current transformers to the master unit sig... | 11/01/1988 |
| 4780786 | Solid-state trip unit of an electrical circuit breaker with contact wear indicator A digital solid-state trip unit of an electrical circuit breaker is equipped with an electrical contact wear indicator enabling the degree of wear of these contacts to be known. Each time the circuit breaker performs a break, the microprocessor determines... | 10/25/1988 |
| 4777555 | Device for protecting an electric power line against high transient overvoltages A device for protecting a polyphase electric power line against high transient overvoltages comprises at least two stages in series, the first stage being provided with a spark-gap and a decoupling inductor and being followed by a stage having a bridge li... | 10/11/1988 |
| 4775800 | Power-supply apparatus Power supply apparatus including a generator of electrical energy, such as fuel cells, solar cells, MHD generators or the like, in which a storage battery is connected to the generator and to the load for supplementing the generator when the load exceeds ... | 10/04/1988 |
| 4775912 | Protection device against the driving effect of parasitic transistors in monolithic integrated circuits Described is a protection device for power PNP transistors against the anomalous driving effect of parasitic transistors which are excited, under certain limit conditions, in bipolar type monolithic integrated circuits. The device is of simple integration... | 10/04/1988 |
| 4766513 | High voltage apparatus A high-voltage apparatus having a casing (1) filled with an insulating medium, an active part (6) connected to high voltage in the casing, and a pressure-relief valve (2) closing off the casing (1). The pressure-relief valve (2) includes a hinged cover (9... | 08/23/1988 |
| 4764835 | Safety apparatus A box designed for holding safety apparatus, such as face and eye protecting shields used in conjunction with grinders and the like, is electrically wired to such grinder or similar shop equipment. When the face and eye protector is stored within the box,... | 08/16/1988 |
| 4763219 | Overload protection for DC motor-driven linear actuator A permanent magnet DC motor-driven linear actuator has a screw shaft supported against axial movement by a compressed spring. Excess thrust in one direction causes the shaft to move axially to open a first momentary switch, and excess thrust in the opposi... | 08/09/1988 |
| 4761707 | Lightning-conducting insulators A lightning-conducting insulator is disclosed, which comprises an insulator body consisting of a shed portion, a plurality of rib portions provided inside the shed portion, and a cup-like cylindrical head portion at a central upper portion of the shed por... | 08/02/1988 |
| 4761702 | CMOS latch-up recovery circuit An overcurrent shut down circuit for use in a switching regulator power supply comprised of circuitry for detecting the average current of a pulse width modulated input signal, comparing the average current with a predetermined threshold level and reducin... | 08/02/1988 |
| 4760488 | Transmission control apparatus for duplex loop type transmission system This invention relates to a duplex loop type transmission system which is so constructed that a plurality of transmission stations are loop-connected with two transmission lines, and the control right for transmission is carried about among the transmissi... | 07/26/1988 |
