Resources Contact Us Home
Method of forming a hollow sand core

Image Number 4 for United States Patent #8091608.

A method of forming a hollow sand core involves placing a preform into a cavity defined in a mold, where the preform has a predetermined configuration. A granular material is then introduced into the mold cavity and around the preform. The introduced granular material is established around the preform to form the hollow sand core. The preform is deformed in a manner sufficient to enable removal of the preform from inside the hollow sand core, and then is removed from the sand core. The removal of the preform exposes a hollow portion of the sand core.

  Recently Added Patents
Dynamic web page construction based on determination of client device location
Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
Braided pull tug pet toy
Scalable architecture for rank order filtering
Image quality assessment
Woven mesh substrate with semiconductor elements, and method and device for manufacturing the same
  Randomly Featured Patents
Interior protection system
Optical/electrical connector and method of fabrication
Pressure sensing module for a catheter pressure transducer
Thermal sensor and current generator
Shopping calculator with comparison feature
High tension permeable belt for an ATMOS system and press section of paper machine using the permeable belt
Dual bipolar magnetic field for rotary high-voltage contactor in automotive lithium-ion battery systems
Method and system for writing to a VLAN tag
Biodegradable and bioabsorbable implant material and method for adjusting shape thereof