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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7760699 | System and method for efficient transmission of electronic information A system and method for efficient transmission of electronic information comprises providing a controller 10 being capable of receiving and transmitting electronic information, providing a plurality of access points 20, each access point having a plura... | 07/20/2010 |
| 5492154 | Method and apparatus for producing a wave winding The method and apparatus are used to produce a wave winding. To simplify and accelerate the production of wave windings, after winding at least one turn, a stripping stroke pushes the wire between and axially along the first and second shaping elements, w... | 02/20/1996 |
| 5486196 | Apparatus for the closure of wide skin defects by stretching of skin An apparatus for closing wide skin defects may be used with two long interdermal needles configured for insertion underneath skin close to margins of a skin defect. The skin closing apparatus may include two U-shaped retaining members configured as a flan... | 01/23/1996 |
| 5470433 | Process for the delignification of cellulose fiber raw materials using alcohol and alkali A process for the delignification of cellulose fiber plant raw material for the production of pulp using separate impregnating and delignifying stages, each using alcohol and alkali. The process may be carried out in batch or in a continuous process. Less... | 11/28/1995 |
| 5457467 | Multiple antenna system with output signal combination The antenna combination has at least two individual antennas which form part of at least one resonant circuit which appears on an electrically conductive surface. The output signals of the individual antennas are combined, for example, added. The antennas... | 10/10/1995 |
| 5426345 | High voltage electronic tube with intermediate electrode A high voltage electronic tube comprises an electrode arrangement comprising an outer electrode formed by a cylindrical metal jacket, an inner electrode supported substantially centrally with respect to said outer electrode by an electrode support arrange... | 06/20/1995 |
| 5406987 | Apparatus and method for producing a wave winding An apparatus and method for producing a wave winding for electric machine starters whereby visual wire winding sections are continuously and successfully shaped into a wave winding on a wind winding device former during the winding process with the aid of... | 04/18/1995 |
| 5392476 | Collapsible hammock stand A collapsible hammock stand is provided for suspending a hammock above the ground. The collapsible hammock stand includes a collapsible longitudinal base member having lateral ground engaging support members at each end. The hammock stand also includes up... | 02/28/1995 |
| 5367784 | Roll tape measure The invention relates to a roll tape measure, consisting of a housing upper part and housing lower part, a perforation in the housing upper part for a release button, a spring drum with tension spring placed in the housing, whose end is connected with the... | 11/29/1994 |
| 5346458 | Electrohydraulic energy converter for cardiac assist devices and artificial hearts An apparatus for converting electric energy into pumping energy is disclosed. The apparatus is utilized to drive a cardiac assist device or an artificial heart. These devices are volume displacement blood pumps which require an alternating force or pressu... | 09/13/1994 |
| 5341831 | Method and apparatus for irrigation control A method and apparatus for controlling an irrigation cycle of an area of soil or like material are disclosed. The irrigation cycle may stop as soon as a wetting front of the applied fluid reaches a depth Zi. The wetting front may continue downward into th... | 08/30/1994 |
| 5341721 | Ammunition drum for a large caliber weapon An ammunition drum for a large caliber weapon may have two or more drum elements with parallel rotating axles. The ammunition is located in one or more concentric layers of ammunition holders around the rotating axles. To reduce the structural volume and ... | 08/30/1994 |
| 5335572 | Method and apparatus for processing sheets of material in register, in particular for making security threads The invention relates to a method, an apparatus and sheets of materials for producing marked security threads as are used to increase the protection of documents and papers of value against forgery. The inventive method is for processing, in particular cu... | 08/09/1994 |
| 5334035 | Plug connector A plug connector may include an electrically insulated contact holder and a plug contact or contact element located in a contact chamber of the contact holder. The plug connector may be configured as a multi-pole plug connector exhibiting a plurality of c... | 08/02/1994 |
| 5302108 | Mold closing apparatus for an injection molding machine A mold closing apparatus and process for use with an injection molding machine are described. The mold is opened and closed by hydraulic pressure. The disclosed apparatus and method relate to the use of an immobile differential piston within a displaceabl... | 04/12/1994 |
| 5298922 | Multilayer data carrier and methods for writing on a multilayer data carrier A multilayer identity card exhibits an outer color layer of a first color and an inner color layer of a second color to allow for identity cards and the like to be written on in several colors. While the outer color layer absorbs virtually no laser beam l... | 03/29/1994 |
| 5297340 | Parting tool A parting tool for parting seams and/or cutting threads or the like is disclosed. The parting tool may include an arc-shaped blade located between two tines of unequal length to effect a cut. The long tine may have a thorn-like point and the short tine ma... | 03/29/1994 |
| 5291883 | Transcutaneous electric nerve stimulation system An apparatus for transcutaneous electric nerve stimulation (TNS) with a power supply, a frequency generator and an electric circuit for the generation of different output frequencies of variable intensity at the output electrodes which may be connected to... | 03/08/1994 |
| 5263971 | Apparatus for the closure of wide skin defects by stretching of skin An apparatus for closing wide skin defects may include two long pins for insertion underneath the skin close to the margins of the defect. Two U-shaped members may also be provided. Each U-shaped member may include a sharp hook at the end of each leg adap... | 11/23/1993 |
| 5250119 | Process for cleaning the filtering medium of a filtering centrifuge A process is used to clean a filtering centrifuge. A base layer of filtered matter remains on the filtering medium of the centrifuge after the removal or repeated removal of a portion of a solid cake of filtered matter by a peeling blade and discharge app... | 10/05/1993 |
| 5239902 | Method and apparatus for processing sheets of material in register, in particular for making security threads The invention relates to a method, an apparatus and sheets of materials for producing marked security threads as are used to increase the protection of documents and parers of value against forgery. The inventive method is for processing, in particular cu... | 08/31/1993 |
| 5234221 | Elastomer seal An elastomer seal is described which is useful for forming a sealed, flat mounting surface on a curved housing. The elastomer seal has a flat sealing face opposite a curved sealing surface. An angled transition surface is adjacent to the curved sealing su... | 08/10/1993 |
| 5233709 | Bedstead A bedstead may be constructed of longitudinal spring bodies and transverse slats. Fastening straps may be connected to the spring bodies and the straps may be loops, slots or holes configured to receive the slat ends. The straps may also include a locking... | 08/10/1993 |
| 5231508 | Hall effect gauge with magnetically-sensitive variable-resistance element A signaling gauge may utilize a magnetically actuated variable resistor made up of a plurality of noncaptivating, magnetically actuated switch elements, each of which is mounted in an influence zone of a path of a magnet carried on an arm of a condition s... | 07/27/1993 |
| 5227780 | Apparatus with a portable UHF radio transmitter remote for controlling one or more of infrared controlled appliances A plurality of infrared controlled appliances are controlled from a single UHF radio transmitter remote controller. The controller provides a plurality of separate distinct output control signals to an UHF to infrared transponder. The transponder has a UH... | 07/13/1993 |
| 5222514 | Method of operating a gas sealing valve and valve equipped plastic processing installation A method is disclosed for operating a valve needle for plastic processing plants. The needle valve may be controlled by a control valve, which in turn is controlled by a working gas volume in order to prevent formation of internal waviness in injection mo... | 06/29/1993 |
| 5218600 | Process for networking computers and/or computer networks and networking systems In a process for interconnecting computers and/or computer networks, the occurrence of an interruption in the network system is detected. A redundant connection is activated as a function of said interruption. The redundant connection is inactive in undis... | 06/08/1993 |
| 5212546 | Color correction system employing reference pictures The color correction system will enhance an operator's ability to edit and correct the appearance of a color image. This system is particularly useful in desk-top publishing applications. A reference image with an overall desired visual impression is disp... | 05/18/1993 |
| 5210773 | Process for the intermediate amplification of digital signals and intermediate amplifiers for digital signals An intermediate amplification process for digital signals with pulse regeneration, determines the phase difference between the receiving timing signal and the local transmission timing signal and alters the phase of the local transmission timing signal as... | 05/11/1993 |
| 5204979 | Diversity receiving method and apparatus for combining a plurality of rapidly changing signals According to the receiving method for mobile reception has a plurality of individual receiving antennas, also known as diversity receiving method, on the individual antenna output signals an auxiliary modulation is superimposed and the antenna output sign... | 04/20/1993 |
| 5204047 | Method of using a mold closing apparatus for an injection molding machine A mold closing apparatus and process for use with an injection molding machine are described. The mold is opened and closed by hydraulic pressure. The disclosed apparatus and method relate to the use of an immobile differential piston within a displaceabl... | 04/20/1993 |
| 5201580 | Impingement mixing device A mixing device exhibiting a mixing chamber, feed and recirculation lines for components and for the component mixture. A control piston reciprocates inside the mixing chamber between a recirculation position where the feed and recirculation lines are in ... | 04/13/1993 |
| 5191945 | Plow debris deflector A plow debris deflector for attachment to plows is disclosed. The plow debris deflector improves trash flow, buries stalks, stems, leaves and other debris without discing and requires low maintenance while providing excellent soil rotation and burying cov... | 03/09/1993 |
| 5189750 | Combination bottle opener and can opener A combination bottle opener and can opener is disclosed. A bottle opening element may be movably connected to a can opening element. The bottle opening element may include a first end having an angled portion and a protrusion that cooperate to define a bo... | 03/02/1993 |
| 5183289 | Housing for protective air bar retaining systems of automotive vehicles An air bag housing for automotive vehicles is disclosed. The housing includes a pot-like generator carrier to hold the air bag, a cover cap surrounding the generator carrier and having a predetermined breaking line, and a safety plate to secure the cover ... | 02/02/1993 |
| 5174879 | Apparatus for simultaneous disinfection and removal of nitrate/nitrite ions and other adsorbable chemicals from drinking water A device for the continuous disinfection of and removal of nitrate/nitrite ions as well as other adsorbable organic impurities from water and a process for using the device are disclosed. Three or more containers may be arranged in series in the direction... | 12/29/1992 |
| 5173197 | Slide plate for slide gate valves A slide plate for a metallurgical vessel slide gate valve may include a ceramic plate, held by a binder, preferably cement, in a frame. The plate and frame combination is held by frictional force and without mortar in a plate holder. The frame is provided... | 12/22/1992 |
| 5168525 | Boundary-layer microphone A boundary-layer microphone may obtain a frequency independent, hemispherical directional characteristic with a high tonal quality. The geometrical configuration of the mounting plate and the installed location of the membrane within the surface of the mo... | 12/01/1992 |
| 5146516 | Optoelectrical sending and receiving apparatus A sender/receiver apparatus configured for a bi-directional beam wave guide may be configured with an optical prism. the device can be placed in a housing with a wave guide socket connected at an optical port. Spherical lenses and an internal wave guide m... | 09/08/1992 |
| 5141139 | Slide gate nozzle for metallurgical vessels A sliding gate valve for metallurgical vessels, such as pouring ladles, is disclosed. The sliding gate valve may include a slide gate housing fastenable to a melt-containing vessel. A heat-resistant closure plate may be held stationary by a movable slide ... | 08/25/1992 |
