Celebrity Inventors
Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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 |
| 5455776 | Automatic fault location system A fault location system comprises voltage/current transducers 10A, 10B located at terminals A and B, respectively; digital relays 12A and 12B respectively coupled to transducer blocks 10A and 10B; and a fault location estimation processor 14, which may co... | 10/03/1995 |
| 5434369 | Automated secondary disconnect mechanism for electrical switchgear An automatic secondary disconnect mechanism for an electrical switchgear apparatus having an enclosure and a removable circuit device is disclosed. According to a preferred embodiment, the automatic secondary disconnect mechanism comprises a guide rail mo... | 07/18/1995 |
| 5412624 | Real-life timer interval adjustment A system and method for controlling time-critical functions by dynamically adjusting the interrupt frequency of a microprocessor. Interrupts are generated at a predetermined frequency. Time-critical functions are then performed in response to the interrup... | 05/02/1995 |
| 5406818 | Opening apparatus having an alignment system for producing a continuous metal strip from a split-tube Twin metal billets are fed to dual circumferential grooves formed in a rotating wheel. The billets are advanced first to a wedge-shaped gap which deforms the billets and are then advanced to a die. The die has a die opening with a circumferentially discon... | 04/18/1995 |
| 5395247 | Sliding contact A sliding contact comprises a stationary contact member having an opening extending therethrough and a movable contact member, at least a portion of which is disposed within the opening. Conductive bearing means are disposed within the opening between the... | 03/07/1995 |
| 5359874 | Method and apparatus for production of continuous metal strip Twin metal billets are fed to dual circumferential grooves formed in a rotating wheel. The billets are advanced first to a wedge-shaped gap which deforms the billets and are then advanced to a die. The die has a die opening with a circumferentially discon... | 11/01/1994 |
| 5130880 | Internal arc gap for secondary side surge protection A system and device are disclosed for protecting the primary windings of a distribution transformer from surge current which exceed a predetermined level including a tank for accommodating the distribution transformer, a first arc gap extending between a ... | 07/14/1992 |
| 5067992 | Drilling of steel sheet A steel sheet (10) having a stress-relief annealed, structure with a plurality of magnetic domains (12) is made by drilling a plurality of closely spaced, small holes (15) through the entire thickness of the steel sheet, where the drilling is effective to... | 11/26/1991 |
| 5038372 | Systems for transmitting data via telephone lines A system for transmitting data via a telephone line by means of a data communications device (4) connected to the telephone line, at least one other communications device being connected to the telephone line and each device being switchable between an in... | 08/06/1991 |
| 5025949 | Oil-filled transformer housing In a transformer housing assembly including a tank and a base supporting the tank, the tank being arranged to contain a body of oil and a transformer the tank and base are secured together, subsequent to individual fabrication thereof, by a plurality of f... | 06/25/1991 |
| 5027297 | System for time stamping events using a remote master clock Events at spaced locations, such as contact activity in the protective relays of an electric power distribution network, are time stamped using a single remote clock by a system which includes one or more slave stations monitoring the events. Each slave s... | 06/25/1991 |
| 5008525 | Current monitoring circuit error compensation In a measuring device including a magnetic-optic current transformer (2) defining an optical path having an input (4) and an output (6) and having an optical transmission characteristics such that the relation between optical energy supplied to the input ... | 04/16/1991 |
| 5001419 | Method of deriving an AC waveform from two phase shifted electrical signals The voltage between two objects is measured utilizing an electro-optic crystal exhibiting birefringence in two axes (slow and fast) mutually orthogonal to an optic axis extending between the two objects. Two collimated light beams polarized at an angle to... | 03/19/1991 |
| 4998063 | Fiber optic coupled magneto-optic sensor having a concave reflective focusing surface A device for monitoring a magnetic field intensity having a given direction, the device including: a light conducting member (11) defining a first optical port (23), a second optical port (24), an optical path extending between the ports, and elements (31... | 03/05/1991 |
| 4994934 | Microcomputer based reclosing relay A microcomputer based reclosing relay performs a number of sequences to generate a succession of reclosure signals for a circuit breaker at timed intervals. The digital processing unit of the relay maintains flags, counts and running times for generating ... | 02/19/1991 |
| 4972290 | Electric power system with remote monitoring and control of protective relays Monitoring and control of analog electromechanical protective relays and digital mcroprocessor based relays is integrated through a system including slave stations which record and time tag contact activity at each of the analog relays. The slave stations... | 11/20/1990 |
| 4972168 | Transformers and cores for transformers A transformer having a core having a butt-lap-step joint. The laminations of the core are the turns of a spiral into which a web of very thin amorphous magnetic material is wound. At the joint, the core is cut producing opposite folds whose ends are align... | 11/20/1990 |
| 4968960 | Electromagnet relay with flux biasing A rotating disc electromagnetic relay has an operating element which applies a torque to the disc tending to close the main contacts and a restraint element generating a torque which together with a spring tends to open the relay contacts. The operating a... | 11/06/1990 |
| 4963820 | Energy meter An energy meter composed of a meter chassis (2) having a transducer (4) connected to sense energy usage and to provide an output having a fixed relation to the sensed energy usage, a replaceable register (6) connectable to the transducer (4) for convertin... | 10/16/1990 |
| 4962496 | Transmission of data via power lines A method for transmitting data in the form of a sequence of data words according to PLBus communications protocol in a channel (20) carrying data transmitted, according to a different protocol, in the form of timed bursts of a signal, comprising: producin... | 10/09/1990 |
