Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Fabrication of box parts from plastic material










Image Number 12 for United States Patent #3977307.

Box parts such as box bottoms and box lids are fabricated from notched blanks of plastic sheet material.Relatively large boxes can be fabricated and the blank feed mechanism is actuated by a crank mechanism that runs at twice the speed of a main, one revolution per cycle drive shaft. An extension blank pusher can be added to produce smaller boxes. The tab folders have solvent applicators formed as grooved metal bars associated with a centralized solvent delivery and recovery system. The transverse folding dies are heated with a flexible, rope-like heating element to facilitate changes in die length. The feeding apparatus includes cam operated, vacuum cup lifter arm assemblies which lift the top blank from a stack and present it to vacuum cups on the feed pushers. These assemblies are longitudinally adjustable. The anvils that cooperate with the tab folders have heated bodies, but their clamp surfaces are insulated from the bodies.








 
 
  Recently Added Patents
Tie down strap hook
Front exterior of an automotive tail lamp
Method and system for detecting center pivot collision
Methods of enhancing diabetes resolution
Pharmaceutical composition comprising gabapentin or an analogue thereof and an .alpha.-aminoamide and its analgesic use
Circuit arrangement and method for operating a circuit arrangement
Plants and seeds of hybrid corn variety CH424126
  Randomly Featured Patents
Amphetamine derivatives and protein and polypeptide amphetamine derivative conjugates and labels
Rechargeable battery pack
Reference frequency generation circuit, semiconductor integrated circuit, and electronic device
System and method including self oscillating feedback for acoustic operation of a discharge lamp
Bullet identification
Robust torch jet spark plug electrode
Prefabricated load bearing structure
Two prong professional sprayer assembly with agitator and filter
Method of adjusting phase shift in amplification multicavity klystron and device therefor
Pressure transmitter having a pressure sensor of micromechanical design