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
Power generating apparatus of renewable energy type and method of attaching and detaching blade
Signal processing apparatus and methods
ASICs having programmable bypass of design faults
Multiplexing channels by a medium access controller
Synchronous rectifier network unit circuit and method
Electronic component, a semiconductor wafer and a method for producing an electronic component
Discharge lamp lighting circuit
  Randomly Featured Patents
Thin-film transistor and method for manufacturing the same
Method and device for processing data packets which have been received or are to be transmitted on a data channel
Ceramic terminal block, hermetic sealed package, and complex semiconductor device
Thickened aqueous coating compositions containing film-forming polymeric binder
Globe lighting assembly
Programmable slow-cooker appliance
Urea compounds, compositions and methods of use and preparation
Fire damper
Preparation comprising a creatine component, method for the production thereof, and the use thereof
Conveyer belt cleaning and sanitizing apparatus