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 |
| 4042871 | Conversion system with overcurrent protection and start-up circuitry Circuitry for providing high voltage DC power from commercially available 60 hertz AC utility power. The incoming 60 hertz AC voltage is rectified to a DC voltage. This DC voltage is then converted to a high frequency AC voltage by means of a sine wave in... | 08/16/1977 |
| 4042903 | Power control slide switch A power control device utilizing a circular control potentiometer having a rotatable control shaft may be adapted to a slide switch configuration by attaching a pinion gear to the shaft. A slide bar having a rack member for engagement with the pinion gear... | 08/16/1977 |
| 4021174 | Apparatus for forming composition board by extrusion Method and apparatus for making composition board having a planar surface and legs by an extrusion process from its constituent materials wherein there is provided an improved agitation mechanism for insuring the uniform dispersion of constituent material... | 05/03/1977 |
| 4021522 | Method of forming collagen dispersions A method of preparing collagen fibre dispersions comprising treating a collagenous material such as hide corium with a solution containing an alkaline earth metal hydroxide and an alkaline earth hydroxide; coarsely dicing or mincing the collagen, and mech... | 05/03/1977 |
| 4016782 | Adjustable ratchet wrench There is disclosed as the preferred embodiment of the invention an adjustable ratchet wrench including a disk member with ratchet teeth on its periphery and hub portions on each side of reduced diameter. A centrally disposed rectangular opening is provide... | 04/12/1977 |
| 4016979 | Log sorting conveyor A conveyor for sorting logs is pivotably mounted on a support structure and is rotatable about an axis parallel to the direction of log transport. The apparatus includes double chamber pneumatic cylinders which may be selectively actuated to pivot the con... | 04/12/1977 |
| 4016474 | Circuit for controlling the charging current supplied to a plurality of battery loads in accordance with a predetermined program A battery charging system includes a circuit for sequentially connecting each of a plurality of banks of batteries to a constant current generator for a first predetermined period of time, for example, one hour, and then disconnecting all banks for a seco... | 04/05/1977 |
| 4010389 | Solid state time delay and holding circuit Circuitry operating as a time delay/holding relay whereby a connection is established between a pair of output terminals whenever power is applied between input terminals and for a timed period after the receipt of a predetermined signal. A first integrat... | 03/01/1977 |
| 3999750 | Artificial snowfall producing apparatus An artificial snow machine for display purposes includes a cylindrical container having an inverted conically shaped bottom. High pressure air is admitted to the interior of the container through a port at the apex of the cone to pressurize the container.... | 12/28/1976 |
| 3993955 | Method of and apparatus for establishing emergency communications in a two-way cable television system In a two-way cable television communications system wherein a central or master station is coupled to a plurality of remote stations through a coaxial cable network, each remote unit is provided with means for decoding an emergency alert transmission sign... | 11/23/1976 |
| 3990911 | Solid electrolyte galvanic cell Disclosed is a method of increasing ionic conductivity of solid electrolytes, such as salts, metal oxides and the like, and an electrochemical galvanic cell utilizing a solid, anhydrous electrolyte which includes a radioactive source for increasing conduc... | 11/09/1976 |
| 3990012 | Remote transceiver for a multiple site location in a two-way cable television system A remote transceiver for a two-way cable television system includes a main receiving, transmitting and logic control unit coupled to a plurality of locally remote control units through a plurality of supplemental tuning and logic sections. A receiver in t... | 11/02/1976 |
| 3987397 | Remote unit for a two-way cable communications system A two-way cable communications system includes a master station having a transmitter for transmitting television program and interrogation signals to a plurality of remote units or transceivers through a cable network and a receiver for receiving reply si... | 10/19/1976 |
| 3987354 | Regulating circuit A regulator circuit provides a constant direct current to a load, for example, a string of batteries. The current is regulated to be independent of the load and supply voltage variations and can be operated under open or short circuited load conditions fo... | 10/19/1976 |
| 3974829 | Means for preventing fogging of optical aids used by the wearer of a surgical mask A surgical mask is provided with means for preventing fogging of optical aids used by the wearer. The means comprises a strip of pliable material bonded to a layer of soft foam interposed between the upper edge of the mask and the wearer's face. An air im... | 08/17/1976 |
| 3969020 | Automatic refraction apparatus and method Apparatus and method provide for automatically measuring the refractive error of the human eye and thus the prescription for lens or eye glasses for correcting this error. Test symbols are alternately presented at two different locations on a test screen ... | 07/13/1976 |
| 3949347 | Switching potentiometer control unit A control unit, for example, a light dimming unit for controlling the intensity of brightness of a lamp load connected in series with the unit, includes a switching potentiometer for serially connecting the unit between a supply line and the load and for ... | 04/06/1976 |
| 3943484 | Method of attenuating unwanted seismic reflections in underwater seismic exploration A string of seismic detectors is towed at a certain depth underwater by a survey boat over an area to be explored. A seismic disturbance is produced at a distance below the surface of the water such that the propagation time of seismic waves traveling fro... | 03/09/1976 |
| 3939396 | Shunt A.C. voltage regulator with modified full-wave bridge A semiconductor switching device is connected in shunt with an A.C. voltage source to be regulated. A modified full-wave bridge rectifier is connected across the voltage source by a first pair of diagonally opposite nodes. A control circuit including a ca... | 02/17/1976 |
| 3934220 | Method of seismic exploration for penetrating diffraction barriers and/or surveying beneath obstacles A number of seismic detectors are located in a two-dimensional array on the surface of the earth, either on land or at sea. One or more seismic disturbances are produced in the vicinity of the seismic detectors at points located to produce sampling of var... | 01/20/1976 |
