Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Graphics plotter turret head










Image Number 13 for United States Patent #4518972.

A turret head for use in a graphics plotter for holding a plurality of liquid ink pens adjacent the point of writing and for selectively changing the pens to be the writing pen. Automatic pen tip capping and uncapping is included. A plurality of spaced radial arms are mounted on a turret driven by a stepping motor between main positions. A pen holder assembly is mounted for vertical movement between raised and lowered positions and carries a pen gripping arm thereon. The pen gripping arm is adapted to move vertically between the radial arms of the turret and beneath them as the turret is rotated. The arms are provided with facing releasable gripping fingers for exchanging pens between arms upon contact.








 
 
  Recently Added Patents
Under bump passive components in wafer level packaging
Changing sound alerts during a messaging session
Polarization preserving front projection screen microstructures
Circuit arrangement for a piezo transformer, and method therefor
Electrical event detection device and method of detecting and classifying electrical power usage
Carrying case
Alterable account number
  Randomly Featured Patents
Process and apparatus for the production of sheeting having a color wedge
Sand screen repair
Combination drink dispenser
Durable high-precision magnetostrictive pump
Wall construction
Fuel cell stack with a curved flow guide section
Feeding unit for a casting
Rotary unit having clutch function
Electrical connector
Cell culture vessel, production process thereof and cultured cell