Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for impacting a surface with a controlled impact energy










Image Number 7 for United States Patent #4711754.

A method and apparatus for impacting a surface with a desired kinetic impact energy wherein an impacting device which can apply a variable impact energy corresponding to the magnitude of an input control signal is provided and placed adjacent the surface to be impacted. Thereafter, an input control signal of a preset magnitude is applied to the impact device to initiate an impact, the kinetic energy of the impact is determined, the value of the determined kinetic energy is compared with a value corresponding to the desired kinetic impact energy, the results of the comparison are indicated, the preset magnitude of the signal used for the control signal is adjusted to reduce any difference noted as a result of the comparison, and the process is repeated until a repeatable impact of the desired impact energy is determined and indicated. Preferably, the impacting device is a solenoid whose plunger provides the impact, the input control signal is an input voltage applied across the solenoid coil, and the impact energy is determined by measuring the velocity of the plunger just prior to impact by: sampling the magnitude of a signal, whose magnitude is proportional to the distance moved by said plunger, at uniform time increments; subtracting the sampled values from successive sampling times to provide difference values; and, upon detecting a zero difference value, indicating that impact has occurred, utilizing the immediately previously provided difference value as a measure of the velocity of the plunger just prior to impact, and thus of the kinetic impact energy.








 
 
  Recently Added Patents
Vehicle tail lamp
Vehicle headlight
Light fitting
Engineered magnetic layer with improved perpendicular anisotropy using glassing agents for spintronic applications
Electronic component, a semiconductor wafer and a method for producing an electronic component
Modular sport center
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
  Randomly Featured Patents
Methods for producing photosensitive microparticles, aqueous compositions thereof and articles prepared therewith
Down-draft fixed bed gasifier system
Method of displacing a beam converging position and apparatus thereof
Torque limiting clutch
Cooling apparatus for a microwave oven having lighting lamps
Sensing circuit for a floating gate memory device
Transportation of liquid cryogens
Wire-in-channel superconductor
Radio frequency data communications device with selectively removable antenna portion and method
Process and apparatus for separating matter in suspension in a liquid