Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 5557055 | Musical keyboard having an electronically controlled display and a method of keyboard display A musical keyboard instrument comprising an electronic keyboard and a control panel. The keyboard is composed of black and white keys arranged in a conventional pattern. A keyboard display made up of LED displays and red-green illuminators inform a user o... | 09/17/1996 |
| 5408914 | Musical instrument training system having displays to identify fingering, playing and instructional information A musical instrument training system for a stringed musical instrument having a body, a fingerboard, a plurality of strings, and an electric pickup. A fingering display (left hand) and a playing display (right hand) are mounted on the fingerboard. A contr... | 04/25/1995 |
| 4930168 | Swimming pool with convertible hot tub A swimming pool with a convertible hot tub that may be easily installed or removed by a user. A barrier system, having a removable partition formed from a flexible sheet of material, is placed in the pool tank near an area that includes a hot water inlet ... | 06/05/1990 |
| 4853599 | Cycling limiting circuitry and method for electrical apparatus For use with apparatus of the type including a power supply, means operated by the power from the power supply and means operably connected between the power supply and the means operated thereby for applying power of a predetermined magnitude for operati... | 08/01/1989 |
| 4833737 | Locking means A locking apparatus for securing adjacent articulated members such as a toilet seat and lid mounted on a bowl. Included is a plate for mounting the apparatus to the bowl and a locking arm movable with respect to said plate to a position where the leg of t... | 05/30/1989 |
| 4815698 | Hard seated valve A hard seated globe valve assembly for use in servicing high and low temperature fluids. The valve includes a moveable stem attached at one end to a tapered plug of hard material. An equally hard seat having a tapered surface is mounted for mating engagem... | 03/28/1989 |
| 4811977 | Labeled security seal A security seal having a tag attached to a flat strap at the central portion by a pair of flexible members. The seal is adapted for sealing a box structure or container having a strap in one surface thereof and a hasp attached to the container. The tag ex... | 03/14/1989 |
| 4802700 | Locking seal Locking seal including a rod which is spring-locked within a lock body includes channel structure within the lock body and in the rod surface to preclude removal of the rod even during relative rotation between the rod and the lock body.... | 02/07/1989 |
| 4793644 | Security seal with dye A security seal having a plastic body including three elongated parallel chambers. Mating with the body is a U-shaped resilient shackle having a pair of legs each having a reversely bent end portion terminating in a sharp edge for insertion in two of the ... | 12/27/1988 |
| 4755643 | Electronic relay switch with thermal/electrical shunt The existent current and thermal path of a diaphragm and a movable rod contained within an electronic switch are paralleled with a shunt which does not have to support external loads, and can thus be made of material more ideally suited for the transfer a... | 07/05/1988 |
| 4739336 | Log - periodic HF antenna system A plurality of dual feed half square wave antenna element (each of U-shaped onfiguration) are arranged in a log-periodic structure. The antenna elements are feed at the current loops; i.e., at the corners of the U-shaped antenna elements. A dual inphase fe... | 04/19/1988 |
| 4736150 | Method of increasing the useful life of rechargeable lithium batteries The cycle life of rechargeable lithium batteries is significantly prolonged y applying to the battery as a charging mode a current interrupted at intervals of 1 milliseconds to 9 seconds in a frequency range of about 0.1 to about 10 Hertz.... | 04/05/1988 |
| 4734073 | Method of making a thermionic field emitter cathode The face of a cathode surface is machined to provide a spiral surface fin with microscopic sharp symmetrical protrusions. The cathode gives enhanced emission due to field emission generated at the sharp symmetrical protrusions and due to the increased su... | 03/29/1988 |
| 4733243 | Broadband high frequency sky-wave antenna A broadband H.F. directional sky-wave antenna system comprises a plurality f interconnected, vertical, zig-zag, antenna sections of predetermined increasing height. A counterpoise is utilized to balance the antenna. Power is coupled to the shortest zig-zag... | 03/22/1988 |
| 4731598 | Periodic permanent magnet structure with increased useful field A device is disclosed which uses permanent magnets to manipulate charged ticle beams, such as those employed in traveling wave tubes, wigglers, and undulators. Tapered pole pieces are inserted between magnets in a periodic permanent magnet array, and the... | 03/15/1988 |
| 4729625 | Optical fiber splice sled A housing for optical fibers to be spliced including a pair of movable sleds for supporting the opposing fibers and directing the fibers into opposite ends of a central alignment guide. Retainer sleeves crimped about the cable ends and locator sleeves cri... | 03/08/1988 |
| 4729127 | Method and system for compression and reconstruction of cultural data for use in a digital moving map display A method and digital system for the compression and reconstruction of culal data for use with display systems, such as a system for producing a real time moving map display of terrain, provides a modified footprint/common boundary technique for data comp... | 03/01/1988 |
| 4727006 | Method of monitoring electrochemical cells The physical and electrical condition of electrochemical cells of a battery s monitored on a continuous basis so that corrective action can be taken before explosion and/or venting occurs by a method including the steps of: (A) coating the electrically conducti... | 02/23/1988 |
| 4725754 | Method of making a low aging piezoelectric resonator A low aging piezoelectric resonator is made from a plate of piezoelectric terial using standard resonator fabrication techniques with identical electrodes applied to both major faces of the plate; the electroded plate mounted in a suitable enclosure and t... | 02/16/1988 |
| 4721857 | Sampling and recording dose rate meter A wide range radiation dose rate meter for civil defense use, including a iger-Mueller tube used in a continuous counting mode and for measuring dose rates from the natural background to about 30. rads/hr., with an ion chamber arranged to measure higher d... | 01/26/1988 |
| 4720651 | Resonator insensitive to paraxial accelerations A ring-supported quartz crystal resonator having a circular peripheral surt region encircling an inner resonator region which is configured in the form of a domed arch wherein the top and bottom surfaces thereof are, respectively, convex and concave. In ... | 01/19/1988 |
| 4718746 | Optical fiber graded index connector An optical fiber graded index connector wherein a graded index rod is emped having a bore extending along the longitudinal axis thereof, the ends of the optical fibers to be connected being inserted into opposite ends of the rod bore and positioned to a ... | 01/12/1988 |
| 4719640 | Multiple parallel RF excited CO2 lasers Dual waveguide lasers which are transversely excited in parallel from a con source of radio frequency are provided with one or more channels or bores connecting the laser cavities. The dimensions and configuration of the connecting channels are chosen so... | 01/12/1988 |
| 4717834 | Stripline transformer adapted for inexpensive construction A stripline transformer pulse generator includes a flat ribbon multiple conductor cable and a ground plane of electrically conductive material placed side-by-side and wound together in a coil to form a transformer. The extremities of at least some of the ... | 01/05/1988 |
| 4716444 | Optical radar transceiver control apparatus The apparatus is part of an optical radar set and comprises a high powered O2 pulsed transmitter laser which is injection controlled to operate at a fixed frequency offset from a lower powered CO2 local oscillator laser. A portion of ... | 12/29/1987 |
| 4708681 | Method of making a long lived high current density cathode from tungsten and iridium powders A long lived high current density cathode is made from a mixture of tungs and iridium powders by processing the mixture of powders with an activator into a porous billet, and then impregnating the billet with a chemical mixture of barium oxide, strontium... | 11/24/1987 |
| 4701737 | Leakage-free, linearly varying axial permanent magnet field source A magnetic circuit with a frustum-shaped magnet having a longitudinal bore nd circumscribed by a cladding magnet of varying radial thickness with a non-linear outer exterior surface. The cladding magnet is radially magnetized and the frustum-shaped magnet ... | 10/20/1987 |
| 4700196 | Highly decoupled cosited antennas Two cosited omnidirectional biconical antennas are respectively tilted plus nd minus 45 degrees (&#b1;45°) with respect to the vertical and, therefore, are perpendicular (90°) with respect to each other to effect polarization mismatch and near field deco... | 10/13/1987 |
| 4696103 | Method of making a rotating disk electrode A rotating disk electrode of a soft alkali metal reactive to oxygen and mture in the air is made from a stainless steel core, a tubular Teflon sheath, a circular disk electrode of the soft alkali metal, a self-tapping stainless steel screw to secure the ... | 09/29/1987 |
| 4694297 | Remote identification device The conventional way of achieving an identification, friend or foe (IFF) function for a moveable subject requires the subject to carry a transponder that emits a coded return when a radar pulse is received by its receiver. In the present invention, an IFF... | 09/15/1987 |
| 4692732 | Remanence varying in a leakage free permanent magnet field source A magnetic circuit with a remanence varying cylindrical magnet having a b and a remanence varying cladding magnet circumscribing the cylindrical magnet creating a longitudinally increasing axial magnetic field within the bore. The cladding magnet has a r... | 09/08/1987 |
| 4691208 | Ferrite waveguide scanning antenna A phase-scan antenna apparatus including a rod-shaped ferrite dielectric eguide having two non-ferrite dielectric ends, and means for applying a variable magnetic field to the ferrite section.... | 09/01/1987 |
| 4691111 | Multiple gap optically activated switch Solid state optically activated switches in which a plurality of spaced cacts are arranged in a line on one of the broad surfaces of a semiconductor wafer and one or more bridging electrodes are arranged on the opposite broad surface thereof. The two end... | 09/01/1987 |
| 4681821 | Dual battery connector arrangement A lithium-sulfur-dioxide battery (e.g., the BA5847/U) is modified so that can be used both in its customary manner or as a substitute for a standard Leclanche battery (e.g., the BA210/U). Since the aforementioned batteries typically have their connectors... | 07/21/1987 |
| 4679164 | Digital high speed programmable convolver A circuit module rapidly calculates a discrete numerical convolution. A convolution such as finding the sum of the products of a 16 bit constant and a 16 bit variable is performed by the module which is programmable so that the constant may be changed for... | 07/07/1987 |
| 4678728 | Interconnector device An interconnector device permits a lithium-sulfur-dioxide battery (e.g., BA5847/U) to be substituted for a standard Leclanche battery (e.g., the BA200/U). The lithium-type battery can therefore be used in its customary manner or, with the interconnector... | 07/07/1987 |
| 4677398 | Pulsed digital multiplex laser generator A system of lasers which produces a single pulsed laser beam carrying many channels of digital information simultaneously. The information content of each laser output pulse is determined by the presence or absence of one or more input signal channel freq... | 06/30/1987 |
| 4674513 | Active microwave cavity for electron paramagnetic resonance (EPR) apparatus This disclosure relates to a microwave amplifier (22) having an active X-Band microwave cavity (33) for use in electron paramagnetic resonance (EPR) measurements on large, lossy, irradiated, samples such as a human finger. The amplifier comprises an input... | 06/23/1987 |
| 4668924 | Free electron diode oscillator A crossed-field microwave power tube. Electrons are emitted from a tubular lectrode at ground potential. The electrons are accelerated by an electric field toward a high voltage anode located within the tubular electrode. A magnetic field is oriented along... | 05/26/1987 |
| 4667098 | Multi-track optical shaft position and timing cylinder A shaft position, direction and timing assembly for a stepper motor in an ectrically controlled printing system operating in an environment subjected to relatively strong vibrational and shock levels is disclosed. A cylindrical coding member having one or... | 05/19/1987 |
