"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8109836 | Interchangeable billiard cue tip assembly and billiard cue utilizing same A billiard cue has a changeable cue tip/ferrule assembly wherein the ferrule has a conical projection fitting snugly into a congruent receptacle in a fixed tenon of the cue. Vibration of the ferrule is limited by being locked to the rigid cue. The configuration is a... | 02/07/2012 |
| 7780538 | Compositely structured billiard cue tip and billiard cue utilizing same A leather billiard cue tip has an insert embedded in the surface of the cue tip having a higher coefficient of friction relative to the cue ball than that of the leather tip itself. The insert has a mechanical compliance compatible with that of the leather tip, and ... | 08/24/2010 |
| 7568978 | Cue stick tip application and maintenance tool A cue tip tool is a cylindrical jig having a longitudinal bore forming its body into a tube that accepts a cue being tipped. The jig body has three equally positioned slots cut through the tubular wall, and the outer surface of the jig has a collar that squeezes the... | 08/04/2009 |
| 7142169 | Apparatus and method for control of a precisely positionable high gain microwave antenna Two pairs of dielectric rod radiators are positioned on an antenna, with one pair in the azimuthal and the other in the elevational plane of the antenna radiation pattern. The axes of each pair are physically canted away from the direction of the main antenna beam. ... | 11/28/2006 |
| 7133525 | Communication security apparatus and method of using same Encryption and decryption sites are initially assigned identical one time Vernam like pads, (OTP), and each site is provided with identical compendiums of byte modifying instructions identified by instruction IDs. Encryption is implemented by a random first subset o... | 11/07/2006 |
| 6480474 | Telephone call-back system controlled by an online data network in real-time A digital communication network such as the Internet is used to establish and control the telephone connections between two conferees with the telephone network being the means of exchanging verbal information. Each of the two conferees has a computer con... | 11/12/2002 |
| 6398660 | Billiard cue having a vibration damping axial aligning shaft-handle connector A male/female billiard cue connector provides multi-directional vibration damping as well as accurate alignment of the cue's handle and shaft. The strike of the cue against the cue ball causes a longitudinal shock wave to traverse the length of the cue ge... | 06/04/2002 |
| 6393199 | Apparatus and method for high speed recording of video signals A helical scan tape recorder records VHS video and audio at speeds up to 40× the playback speed of a standard VHS VCR. The recorder employs a high speed scanner operating in a helical scan mode. Input signals feed the scanner through a capacitive coupler... | 05/21/2002 |
| 6381083 | Multilevel signal equalization utilizing nonlinear maps In a recording/playback system, increased information is achieved by 4 level biased magnetic recording where the maximum amplitude 4 level recording signal drives the medium's magnetization into a nonlinear region of its transfer function. The bias does n... | 04/30/2002 |
| 6266328 | Dial up telephone conferencing system controlled by an online computer network In a telephone conferencing system, a digital communication network such as the Internet is used to establish and control the telephone connections between multiple conferees with the telephone network being the means of exchanging verbal information. Eac... | 07/24/2001 |
| 6224151 | Functionally ergonomic bicycle saddle A bicycle saddle in which the rear one third of the saddle is an elevated level platform supports the cyclist's weight on the ischial tuberosities, while forward of the platform the saddle's surface steps down and then continuously slopes downward towards... | 05/01/2001 |
| 6216590 | Light weight intaglio printing press The present invention employs a light weight fixed bed to support an intaglio plate, and discloses a print roller mounted on a movable trolley which is advanced across the intaglio plate causing the pressure of the print roller to effect the printing. The... | 04/17/2001 |
| 6072780 | Dial up telephone conferencing system controlled by an online computer network In a telephone conferencing system, a digital communication network is used to establish and control the telephone connections between multiple conferees with the telephone network being the means of exchanging verbal information. Each conferee may have a... | 06/06/2000 |
| 5974747 | Straw bale building incorporating a light weight reinforced structure ND method of fabricating same A building has a support structure fabricated by anchoring light weight, hollow, vertical steel posts into a pre-poured foundation, and then strengthening the posts by filling the hollow cavities with concrete. The structure provides the framework around ... | 11/02/1999 |
| 5933869 | Sports headgear with widow's veil The present invention discloses sports headgear with an attached widow's veil which covers part or all of the face of the wearer. The headgear is designed to worn by a woman wanting to humorously express her "sorrow" at being displaced by a man's exclusiv... | 08/10/1999 |
| 5923760 | Chaotic communication apparatus and method for use with a wired or wireless transmission link A covert communication apparatus exploits chaotic dynamics in the multi-dimensional phase space with a continuous number of states and wide internal spectral bandwidth. The information modulates a chaotically generated signal, and the modulated chaotic si... | 07/13/1999 |
| 5916242 | Apparatus for rapid cooling of the brain and method of performing same Rather than cooling the brain by the relatively slow heat conduction through the low heat conductivity of the bony skull and hair covering the head, the present invention teaches the use of a light weight, easily applied neck encircling collar in firm con... | 06/29/1999 |
| 5917780 | Watch having a multiplicity of band attachment positions and wristband for use therewith Rather than having only two diametrically opposed band attachment points on a watch case and a single strap watchband, a watch has multiple attachment points at opposite edges of its watch case, and a watchband with multiple branches for fastening to the ... | 06/29/1999 |
| 5839958 | Voice synthesized bridge bidding module and method of using same Each of the four players of a game of contract bridge are provided with an identical battery operated module containing switches which a player uses to enter bids of from 1 to 7 in "Spades", "Hearts", "Diamonds", "Clubs" or "No-Trump", according to the ru... | 11/24/1998 |
| 5829655 | Assembly-in-place storage container for use behind the front seats of an extended cab truck An assemble-in-place storage container mounts in the space behind the front seats of an extended cab truck. The container contains bottom, side, front, back and top panels which are configured to form the body of the container, as well as divider panels t... | 11/03/1998 |
| 5642750 | Tent having a continuous seamless peripheral surface and containing an integral self-inflating floor A tent is fabricated from a seamless spherical shell. The floor of the tent is established as a plane interiorly dividing the shell into two chambers. The floor peripherally contacts the inner surface of the shell, and is sealed against the inner surface ... | 07/01/1997 |
| 5643095 | Billiard cue having an axial aligning shaft-handle connector A billiard cue having a separate handle and shaft utilizes a quick operating connector to join the handle and shaft. The connector consists of male and female sections which are secured in the ends of the handle and shaft. The male section contains a cyli... | 07/01/1997 |
| 5524494 | Aircraft propeller thrust measurement apparatus In present day propeller driven aircraft, the engine is mounted on slightly resilient engine mounts which in turn are secured to the aircraft fuselage. Under propeller rotation, the developed thrust causes the engine housing to move slightly forward relat... | 06/11/1996 |
| 5482221 | Single action fly fishing reel having an infinitely variable silent drag In a fly reel, drag is provided by use a helically wound wire spring mounted coaxially over a fixed post attached to the reel frame. The turns at one end of the helically wound spring loosely contact the fixed post, while at the other end of the spring th... | 01/09/1996 |
| 5341278 | Switching pulsed resonant DC-DC converter power amplifier A single sided dc-dc converter utilizes a switched resonant circuit having pulsed currents and voltages. A pair of MOSFET switches are used to alternately charge a capacitor in series with an inductor from an input voltage source, and then to discharge th... | 08/23/1994 |
| 5315895 | Bicycle handlebar conducive to rider aerodyanmic efficiency A longitudinal bar is mountable on a drop-style bicycle handlebar to provide additional comfortable hand positions conducive to the improvement of the cyclist's aerodyanamic profile. The bar is attached to the drop-style handlebar either in, or above, the... | 05/31/1994 |
| 5084794 | Shorted dual element magnetoresistive reproduce head exhibiting high density signal amplification An MR head includes two substantially identical MR elements, separated by an insulating layer which has shorting stubs at its ends for electrically shorting the MR elements. A current applied to the MR elements splits into two currents that flow in the sa... | 01/28/1992 |
| 4956736 | Thin film magnetic element having a rhombic shape The present invention provides increased stabilization of the magnetization of a single domain thin magnetic film over that attainable in the rectangular thin film known in the prior art by shaping the magnetic film as a rhomboid rather than as a rectangl... | 09/11/1990 |
| 4928188 | Magnetoresistive element sandwiched between a sal ferrite substrateand a cover containing an easy axis biasing magnet A magnetoresistive head is fabricated on a ferrite substrate which is both the mechanical support for the head assembly and a soft adjacent layer for biasing the magnetoresistive element of the head. Easy axis bias is supplied by a fixed magnet located in... | 05/22/1990 |
| 4923324 | Zero clearance coupler for connecting a driving member to a splined hub Rather than engage the grooves of a cartridge's splined hub by means of fingers attached to a reel motor shaft, the present invention uses a mechanical coupler mounted on the motor shaft which contacts the spline lands at two places and locks the mechanic... | 05/08/1990 |
| 4908724 | Dual gap cross-field magnetic recording head with single gap signal excitation In a recording system utilizing a cross-field head, rather than excite both the field gap and the recording gap with signal and bias excitation as taught in the prior art, the present invention teaches applying bias excitation to both the field gap and th... | 03/13/1990 |
| 4888657 | Contoured head assembly for use in a cassette loaded recorder To obtain the correct tape wrap angle at the head in a cassette loaded recorder, tape guiding support "outriggers" integral with the head assembly are provided. The outriggers are located on either side of the active portion of the head structure to guide... | 12/19/1989 |
| 4875127 | Apparatus and method for precise tape guiding in a magnetic tape transport In a magnetic tape transport where the tape is guided by means of conventional guides, the tape may wander at the surface of the magnetic transducer between limits set by the mechanical parameters of the guides, e.g. the distance between upper and lower f... | 10/17/1989 |
| 4875129 | Inline magnetic head assembly for use in a cassette loaded recorder In a recorder having two inline heads, such as a record head followed by a reproduce head, it is necessary to insure adequate tape wrap angle at the transducing element of each head. Because the tape is spanned between the two inline heads, the tape leave... | 10/17/1989 |
| 4868697 | Magnetic head with constant area wear profile A particularized cross section for a magnetic recording head provides a constant area wear profile for cooperating magnetic tape. The constant area wear profile results from the "combined" use of a common radius of curvature for both the material bending ... | 09/19/1989 |
| 4865703 | Particulate magnetic recording media and method of manufacture thereof A magnetic recording medium is fabricated by the electrodeposition of acicular magnetic particles onto an electrically conductive substrate from a mixture that is continuously dispersed and circulated through the electrodeposition vessel. Electrodepositio... | 09/12/1989 |
| 4855028 | Particulate magnetic recording media having an areally controlled recording characteristic Utilizing the technique whereby particulate media electrodeposited at a critical electric field intensity has a given packing density, and when electrodeposited at a lesser electric field intensity has a lower density, the present invention teaches electr... | 08/08/1989 |
| 4853814 | Magnetic head with constant area wear profile A particularized cross section for a magnetic recording head provides a constant area wear profile for cooperating magnetic tape. The constant area wear profile results from the "combined" use of a common radius of curvature for both the natural bending r... | 08/01/1989 |
| 4833560 | Self-biased magnetoresistive reproduce head In a magnetoresistive reproduce head which is self-biased by a saturated soft adjacent layer magnetically coupled to the magnetoresistive element, the induced anisotropy fields of the magnetoresistive element and the soft adjacent layer are made to lie in... | 05/23/1989 |
| 4805043 | Microgap recording using ferrimagnetic medium for magneto-optic playback A ferrimagnetic medium is locally heated above its compensation temperature and a magnetic record head provides a magnetic field for data recording on the heated portion of the medium. Upon re-cooling to the compensation temperature, the recorded signal i... | 02/14/1989 |