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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 |
| 4317052 | Apparatus for converting an A.C. input signal to a rectified and smoothed D.C. signal Offset voltages of a precision rectifier circuit, buffer amplifiers, and an input comparator of a log converter are compensated for by charging a coupling capacitor to the combined total offset voltage of the apparatus. The charging is effected by causing... | 02/23/1982 |
| 4195334 | High-voltage DC transmission system and method A high-voltage DC transmission system and method is characterized by a minimum filtering requirement as to ripple as well as to surge and harmonics. Use of a superconducting generator directly coupled to rectifying means eliminates the requirement of a st... | 03/25/1980 |
| 4176393 | A.C. to D.C. voltage converter An a.c. to d.c. voltage converter of this invention comprises an a.c. voltage amplifier whose inverting input is connected to a lead of an input resistor, and whose non-inverting input is grounded for alternating current. The converter further includes a ... | 11/27/1979 |
| 4109308 | Circuit for converting a.c. voltage into a d.c. voltage An a.c. to d.c. converter is disclosed which includes two resetable integrators each for sampling an alternate half-wave of the a.c. voltage to be converted. During each alternate half-wave, when a given integrator is not integrating the input signal, the... | 08/22/1978 |
| 4025828 | Rectifier and rectifying method A rectifier comprising a vessel filled with an aqueous solution or dispersion of a purified polyelectrolyte, and two electrodes immersed therein, wherein the ratio S1 /S2 of the area S1 of one electrode at the portion imme... | 05/24/1977 |
| 4013955 | Analog signal processor An analog signal processor that is particularly suitable for measuring, igrating and holding a single or a pair of analog signals. The input signal to the analog signal processor may be sinusoidal of relatively low frequency and of low signal strength an... | 03/22/1977 |
| 3968418 | Convertor connection with asymmetry indicating means A convertor connection for connection to a DC circuit includes current sensing members for forming a quantity corresponding to the direct current of the convertor connection. An indicating arrangement is provided for indicating asymmetrical operating cond... | 07/06/1976 |
