Resources Contact Us Home
Press-feed units

Image Number 3 for United States Patent #4223821.

A press-feed unit is operative to feed a length of stock material to a press. The unit comprises a body for fixing adjacent the press and a transport section reciprocable relative to the body by a pneumatic piston and cylinder assembly, the stock being clamped to the transport section during forward feed strokes of the latter. The unit further comprises a control valve, and a transport feed valve which is controlled by a pilot pressure signal from the control valve and operable to feed the transport cylinder. A pilot signal connection is provided which can be blanked off to enable the unit to operate independently, or connected through a pilot pressure pipe to a basically similar unit to provide a duplex arrangement of two units, one of which is directly controlled in dependence on press ram position and provides a pilot signal through said pipe to operate the transport feed valve of the other unit.

  Recently Added Patents
Data processing apparatus including reconfigurable logic circuit
Evolutionary clustering algorithm
Semiconductor process
Computer product, information retrieval method, and information retrieval apparatus
Method and apparatus for communicating electronic service guide information in a satellite television system
Detecting the type of NAT firewall using messages
Thermoplastic fluoropolymer composition
  Randomly Featured Patents
Disk stacker including movable gate for insertion of sheets into disk slots
High-density finFET integration scheme
Browser back and forth navigation
Comparative ligand mapping from MHC positive cells
1,2,3,4 Tetrakis-(perfluoroalkyl)-1,3-butadienes
Exhaust brake control of motor vehicle with automatic transmission
Intraocular lens
Valve spool
Radio frequency data communication device in CMOS process
EMI shielded vent panel and method