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System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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| Number | Title | Issue Date |
| 4670902 | Circuitry for telephone systems The invention refers to a circuit for telephone systems for the transmission of alternating current signals such as voice signals from a subscriber telephone system to a central office, wherein a signal transformer is provided with a by-pass for the direc... | 06/02/1987 |
| 4669110 | Call progress tone system A tone source is located at each telephone set of a private branch exchange (PBX) or a key telephone system. The tone source provides call progress tones and warble ring tone, as well as a feedback tone in response to the depression of telephone set keypa... | 05/26/1987 |
| 4658094 | Encryption apparatus and methods for raising a large unsigned integer to a large unsigned integer power modulo a large unsigned integer There is disclosed an encryption apparatus which apparatus functions to raise a large unsigned integer (B) indicative of message data to a large unsigned integer power E, modulo a large unsigned integer M with each of said integers being as large as N bit... | 04/14/1987 |
| 4625758 | Valve actuator apparatus A valve actuator is described which employs a hollow housing fabricated from a stamped metal. Located within the housing is a rotatable spindle which spindle is associated with a traveling nut which nut travels along the spindle as the spindle is rotated.... | 12/02/1986 |
| 4616312 | 2-out-of-3 Selecting facility in a 3-computer system A fail-safe 2-out-of-3 selecting facility for a 3-computer system is disclosed which is especially suitable for use together with microprocessors having a large number of outputs. The computers (R1 . . . R3) of the 3-computer system handle the same inform... | 10/07/1986 |
| 4613864 | Position-fixing system Several satellites serving as reference stations (Sj) for a user revolve about the earth in different orbits. At least four reference stations must be within sight of a user station (N) at the same time. The user station measures the ranges to ... | 09/23/1986 |
| 4608462 | Telephone instrument circuit An integrated circuit for a telephone instrument provides the basic (POT) service requirement. The transmit and receive channels of the circuit may be fed via controlled attenuators incorporated in a first ancillary circuit to provide hands-free operation... | 08/26/1986 |
| 4601027 | Optical FDM system In an optical fiber FDM system, the carriers are derived from the output of a high quality Master Oscillator, which output at frequency f0 is applied to a Raman Nath modulator (RNM1) whose other input is a frequency f0 this gives as ... | 07/15/1986 |
| 4599743 | Baseband demodulator for FM and/or AM signals A demodulator of the type employed in a "zero-IF" system uses a local oscillator for providing quadrature output signals at the center frequency of a received signal to be demodulated. The demodulator has first and second mixers for separately mixing the ... | 07/08/1986 |
| 4598352 | Controlled parallel converter plant The electrical converter or inverter plant comprises several converter modules arranged in parallel between a power supplying line and a power consuming line. Each converter module includes a power converting unit being controlled by a control circuit whi... | 07/01/1986 |
| 4598217 | High speed phase/frequency detector A phase/frequency detector to detect the phase/frequency difference between two signals comprises a first bistable circuit to produce a first output pulse in response to one of the two signals; a second bistable circuit to produce a second output pulse in... | 07/01/1986 |
| 4597785 | Method of and apparatus for making optical preforms with a predetermined cladding/core ratio An arrangement for collapsing tubular formations into optical preforms includes a control arrangement which controls the ratio of hydrogen to oxygen in an oxyhydrogen burner flame during the collapsing operation toward overabundance of hydrogen when it is... | 07/01/1986 |
| 4596052 | Coherent optical receiver A coherent optical receiver for an input optical signal including a local oscillator source of coherent optical signal a single beam splitter/combiner to which both the input and local oscillator signals are applied to produce two substantially identical ... | 06/17/1986 |
| 4594562 | Amplifier with current-voltage conversion, particularly preamplifier of an optical receiver A problem encountered in the design of preamplifiers of optical receivers, e.g., of so-called transimpedance amplifiers, is to achieve both a wide bandwidth and high sensitivity. The invention solves this problem primarily by a specific implementation and... | 06/10/1986 |
| 4591861 | Doppler VOR In a doppler VOR, a plurality of antennas (1) are arranged equidistantly on a circle (20). Two opposite antenna pairs on the circle are simultaneously activated by a commutator (13) in a manner to simulate as uniform a rotation of two opposite antennas as... | 05/27/1986 |
| 4591269 | Rotation rate measuring instrument In the rotation rate measuring instrument, two component beams derived from a light beam produced by a laser circulate around a coiled optical waveguide (radius R, length L) in opposite directions. From the phase difference between the two component beams... | 05/27/1986 |
| 4590374 | Infra-red light absorption gas detector A gas detector arrangement, e.g. for detecting carbon dioxide, includes an infra-red source, a photodetector and band pass filter disposed in the light path therebetween. The arrangement includes means for oscillating the pass-band of the filter across an... | 05/20/1986 |
| 4538219 | Multiwinding inductor and associated apparatus A multiwinding inductor is disclosed which inductor is employed in a power control circuit. The power control circuit is of the type having a transformer which has a center tapped primary winding coupled to and associated with a plurality of secondary win... | 08/27/1985 |
| 4502018 | Gain regulation circuit for an amplifier circuit A gain regulation circuit e.g. for a telephone subscriber's instrument, includes a plurality (2n+1) of long tailed transistor pairs one of which has a significantly higher gain than the remainder (2n). The circuit may be adjusted to a composite gain value... | 02/26/1985 |
| 4456799 | Switch construction for telephone instrument A switch assembly adapted especially for use in a pivotal hookswitch mechanism which includes a transverse camshaft acting as a contact operating shaft for a plurality of transversely spaced contact spring operating pairs, each pair having a contact sprin... | 06/26/1984 |
| 4443875 | Apparatus and methods of call clearing in a packet switched data communications network There is disclosed a method and apparatus for providing call clearance in a packet-switched data communications system. The apparatus disclosed detects the request of an originating terminal to end a call and delays the request for a predetermined calcula... | 04/17/1984 |
| 4439839 | Dynamically programmable processing element A dynamically programmable processing element (DPPE) is disclosed which element has the utility in a digital processing system which requires complicated arithmetic procedures to be implemented. The DPPE device is a special purpose computer which essentia... | 03/27/1984 |
| 4428463 | Retaining spring for the brake shoe of a spot type disc brake There is disclosed a retaining spring for a brake shoe of a spot-type disc brake having resilient arms which abut on guide pins at both sides of the brake shoe backing plate. The spring provides good alignment of the brake shoe parallel to the brake disc ... | 01/31/1984 |
| 4424420 | Pivotal switch operating mechanism A pivoval switch mechanism usable as the hookswitch of a telephone instrument. The switch mechanism includes a transverse camshaft supported between actuating arms of an actuating lever. The camshaft carries a plurality of transversely spaced contact spri... | 01/03/1984 |
| 4419146 | Solder flux compositions Solder flux compositions are prepared by forming a dispersion of a flux material in a liquid in which the flux is substantially insoluble. The composition may be applied to a workpiece by brushing, spraying, or as an unstable foam. A method of tinning cir... | 12/06/1983 |
| 4418396 | Signalling system Message switching organization for exchanging data messages between function or signalling units within the memory of a processor controlled telecommunications system. Each such function unit has its own program and its own data storage, and the program o... | 11/29/1983 |
| 4418359 | Omnispectravision A system for providing a visual color display of multi-spectral and/or multi-sensor data particularly that provided by a trichroic infrared scanning system, which includes the assignment of visible color signals to such data in a manner to maximize color ... | 11/29/1983 |
| 4409306 | Method of preparing a phosphor suspension Method of preparing a phosphor suspension by mixing a photosensitive material, a photosensitizer, and a phosphor for the purpose of forming a photosensitive film. The photosensitizer in the suspension is a chromic-acid solution. With such a phosphor suspe... | 10/11/1983 |
| 4406927 | Electronic tone ringer An electronic tone ringer for use in a telephone instrument to respond to ringing currents to generate an output tone electronically is described. A controlled breakdown rectifier bridge is placed across the input line to produce a d.c. output in response... | 09/27/1983 |
| 4404010 | Replacing optical fibre sheathing after fusion splicing When a pair of plastics sheathed glass optical fibres (1, 2) is joined by a fusion splice there is a length of bare fibre between where the original sheathing of one fibre terminates and where that of the other begins. This gap is filled with reinstatemen... | 09/13/1983 |
| 4401919 | Indirectly heated Wehnelt cathode To achieve an optimum reduction of the warmup time of a Wehnelt cathode, by maintaining a good efficiency, it is proposed to use as a cathode a triode system arranged within the usual cathode sleeve, with the inside of the base plate, on the outside of wh... | 08/30/1983 |
| 4386813 | Current tap ground contact A ground contact strip for use in a current tap comprises an elongated planar member having at least one D shaped arcuate loop integrally formed at a front end with the vertical arm of said D loop movably positioned within a slot in said planar member, wi... | 06/07/1983 |
| 4384592 | Low-noise valve trim A cylindrical valve trim has holes in the valve trim wall that provide a fluid flow path through the valve. The holes pass through the wall at predetermined angles to create a plurality of counter-rotating vortices with parallel axes normal to the wall.... | 05/24/1983 |
| 4377767 | Device for adjusting the electron beams of a color-picture tube To adjust the convergence, raster and purity of an in-line color-picture tube, an oval magnetizable wire ring is mounted on the electron-gun system in such a way that its long axis lies in the plane of the electron beams. This arrangement permits both the... | 03/22/1983 |
| 4377766 | Frame for unit module of a vacuum-fluorescent display A self-supporting frame member mounts a cathode and a control grid in mutual electrical contact to form a unit module that can be secured to other similar unit modules to construct a multi-character vacuum fluorescent display.... | 03/22/1983 |
| 4372648 | Optical fibres A secure optical fibre consists of an inner waveguiding structure surrounded by an outer waveguiding structure and separated therefrom by an optical absorbing layer (3) rendered absorbing by irradiation. The inner waveguiding structure comprises a core (1... | 02/08/1983 |
| 4355259 | Heater for an indirectly heated cathode In a cathode heater, the portion of the coil adjacent to the emitting surface of the cathode has a smaller pitch or is covered with an oxide coating of lower capacity of heat per unit of length than the distant portion. As a result, the emitting surface i... | 10/19/1982 |
| 4355422 | Tunable radio receiver with detuning prevention due to power supply variations In a varactor diode tunable receiver supplied with operating current from batteries, the invention proposes to insert a blocking diode between the supply terminal of the playback amplifier and the input of the stabilizing circuit producing a stabilized tu... | 10/19/1982 |
| 4352154 | Varying two phase voltages in dc to three phase converter If a three-phase current is generated by dc-to-ac conversion, a higher ac output voltage is achieved by connecting each of the three phases alternately to one of the two terminals of the dc voltage source during a sixth-period section, while the two other... | 09/28/1982 |
| 4350350 | Self-compensation gasket for grooved end pipe couplings A self-compensation gasket for grooved end pipe couplings for use in sealing the joint between the pipe ends. An "immediate" seal at the pipe end gap serves as a barrier to possible entry of solids into the internal working section of the gasket. Compress... | 09/21/1982 |
