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 |
| 5508606 | Direct current sensor Direct current can be measured by passing a conductor carrying the current through the core of a toroidal transformer having a bias winding and a sensing winding. A pulse generator send pulses of magnetization current through the sensing winding so that t... | 04/16/1996 |
| 4818892 | Laser device with high-voltage pulse generator, high-voltage pulse generator and pulse generating method A laser device equipped with a high-voltage pulse generator wherein the pulse generator supplies an electric energy from a dc power source in an on-off form of a supply voltage to a tank circuit through a transformer, with the switching on and off of the ... | 04/04/1989 |
| 4417153 | High frequency switching circuit A single-ended switching circuit is constituted by a primary winding of a transformer, a switching circuit connected between the primary winding and a DC power supply and on-off operated with a predetermined cycle and also with a predetermined "on" period... | 11/22/1983 |
| 4377758 | Magnetic amplifying apparatus In an apparatus having a saturable magnetic core, a control winding wound on the magnetic core and supplied with a D.C. voltage in accordance with a desired phase angle, and an output winding wound on the magnetic core and supplied with an A.C. voltage th... | 03/22/1983 |
| 4303831 | Optically triggered linear bilateral switch A bilateral switch uses a single photodiode array connected to the gate electrode of a voltage controlled device such as a field effect transistor or an antiparallel connected gated diode switch pair and, through appropriate diodes, to the drain and sourc... | 12/01/1981 |
