Resources Contact Us Home
Device for scraping off deposits from internal surfaces of elongated tubes

Image Number 2 for United States Patent #4315541.

Device for scraping off a deposit from the internal wall surface of an elongated tube of relatively small diameter, comprising a helical coil spring which is installed inside the tube and adapted to be reciprocally movable and/or rotatable, said spring scraping off the deposit from the internal wall surface of the tube.

  Recently Added Patents
Secure provisioning of a portable device using a representation of a key
Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network
Virtual billboards
Stopper, motor, and disk drive apparatus
Detection of bioagents using a shear horizontal surface acoustic wave biosensor
Device and method for quantizing and inverse quantizing LPC filters in a super-frame
Meter socket cabinet
  Randomly Featured Patents
Device resulting from the combination of a scooter with a bicycle operated by the rider's weight
Desk organizer
Scalable video providing and reproducing system and methods thereof
InSb-based switching device
System for stacking flexible or semi-rigid articles
Methods and apparatus for broadcasting interactive advertising using remote advertising templates
Thermal recording apparatus
Threshing machine
Article reorientation mechanism
Methods and apparatus for generation and control of coherent polarization mode dispersion