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 6 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
Method and system for quantifying viewer awareness of advertising images in a video source
Database caching utilizing asynchronous log-based replication
Systems, methods and computer program products supporting provision of web services using IMS
System and method for a driver circuit with a referenced control signal
Self-diagnostic method and system for implantable cardiac device
Doherty amplifier circuit
Poloxamer foamable pharmaceutical compositions with active agents and/or therapeutic cells and uses
  Randomly Featured Patents
Device for separating individual flat objects from a stack and for transporting away the separated objects
Transmission control devices and systems, and methods of assembly and use thereof
Pneumatic valve and regulator
System for detecting the malfunction of a CPU including a watchdog timer circuit and a memory for storing a malfunction count
Multiple folding of optical lens unit and placement in the eye
Roof valley water collector
Optical targets
Controlled-content recoverable blinded certificates
Heteroaryl compounds used as pharmaceuticals
Electrostatic discharge voltage protection circuit for a solid state instrument