Resources Contact Us Home
Graphics plotter turret head

Image Number 17 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
Electronic devices with voice command and contextual data processing capabilities
Pet burial pod
Magnetic disk and manufacturing method thereof
Method and system for leveraging the power of one's social-network in an online marketplace
Power converter for an LED assembly and lighting application
Technique for manufacturing bit patterned media
Disk drive increasing capacity by adjusting a servo gate during write operations
  Randomly Featured Patents
Vehicle pneumatic tire having truncated groove
Check valve with aspirating function
Method for fabricating metal interconnection of semiconductor device
Diagnostic apparatus for squib line system in vehicular air bag system
Duct type charge eliminator
Androgen-metabolic gene mutations and prostate cancer risk
Gas-turbine combustion chamber wall for a lean-burning gas-turbine combustion chamber
Dual latching mechanism for a flexible deck lid
Refresh signal generating circuit