Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 331/165
Name: Oscillators > Shock excited resonant circuit
Description: Systems wherein means is provided for applying an electrical impulse to a resonant circuit which circuit is then permitted to oscillate freely at its natural frequency.

Sub-classes under this class:

Class Number Class Name Patents
331/166 With keying means of the active element type (e.g., burst generator) 19

Patents under this class:

Patent Number Title Of Patent Date Issued
8427249 Resonator with reduced acceleration sensitivity and phase noise using time domain switch Apr. 23, 2013
8031021 Oscillation circuit based on metal-insulator transition device and method of driving the oscillation circuit Oct. 4, 2011
8031022 Oscillation circuit including MIT device and method of adjusting oscillation frequency of the oscillation circuit Oct. 4, 2011
7944217 Object proximity detector and object position detector May. 17, 2011
7872539 Energy efficient waveform generation using tuned resonators Jan. 18, 2011
7782149 Energy efficient waveform generation using tuned resonators Aug. 24, 2010
7479838 Energy efficient waveform generation using tuned resonators Jan. 20, 2009
6803859 Method and apparatus for active isolation in inductive loop detectors Oct. 12, 2004
6774735 Low power self-biasing oscillator circuit Aug. 10, 2004
6762561 Radio frequency resonator Jul. 13, 2004
6337602 Method and apparatus for active isolation in inductive loop detectors Jan. 8, 2002
6285063 Resonant circuit having a resonant body mechanically oscillated by electrostatic or magnetic forces Sep. 4, 2001
5861768 Resolver exciter having a simple power source unit Jan. 19, 1999
5319665 High power electromagnetic pulse driver using an electromagnetic shock line Jun. 7, 1994
5187449 Coplanar transmission line millimeter radiation source Feb. 16, 1993
4980898 Self-oscillating burst mode transmitter with integral number of periods Dec. 25, 1990
4837525 Transient waveform generator Jun. 6, 1989
4833427 Signal source for use with an LC tank circuit May. 23, 1989
4446427 Measuring and control device using the damping effect of a resistive effect element on the inductor of a tuned circuit May. 1, 1984
4348649 Microwave power pulse generator Sep. 7, 1982
4329627 High frequency thyristor circuit for energizing a gaseous discharge lamp May. 11, 1982
4257010 Method and apparatus for sensing and maintaining oscillations in an oscillating system Mar. 17, 1981
4227195 Fuze Oct. 7, 1980
4059812 Synchronous pulse generator including flywheel tank circuit with phase locked loop Nov. 22, 1977

  Recently Added Patents
Optical angular position detection apparatus and method
Persistent luminescence nanoparticles used in the form of a diagnosis agent for in vivo optical imaging
Digital image processing device and processing method thereof
High-frequency-link power-conversion system having direct double-frequency ripple current control and method of use
Cable sheath
Edge alphas for image translation
Meat-containing, strip shaped food product and method of making same
  Randomly Featured Patents
Method and apparatus for vortex mixing using centrifugal force
Arrangement for feeding of fuel
Display device with crossing electrodes with specific ratio for gray scale
Welding device with arc termination control
Multi-phase motion estimation system and method
Portion of a headset
Hand truck
Metal-air depolarized cell having restricted gas passageway
Glass bulb for a cathode ray tube and a method for producing a cathode ray tube
Push-button matrix