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
Methods and apparatus for intelligent selection of goods and services in mobile commerce
Single-lens reflex digital camera which displays an image for live view
Multi-domain dynamic group virtual private networks
Signal routing dependent on a loading indicator of a mobile node
Method and apparatus for controlling peak amplifier and doherty power amplifier
Light fixture
Method for installing industrial components in an environment
  Randomly Featured Patents
Air turbine starter having a dual clutch
Forced air cooling of components on a probecard
Water-free liquid fuel slurry
Method and system of local oscillator signal generation
Aqueous ink compositions containing amide anti-curl agent
Predoped conductive polymers as battery electrode materials
Saddle attachment for protecting leg and calf
Herbicidal phosphonates
Method for precharging word and bit lines for selecting memory cells within a memory array
Method of manufacturing aluminum alloy sheet