Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Fan Retention system Image Number 2 for United States Patent #6224340. A fan retention system for a blower/vacuum securely retains the fan and creates an insulating barrier to prevent the operator from touching the functionally insulated armature shaft. A nut having interlocking ramps for interlocking with interconnecting portions on an abutting fan surface is provided. The interconnecting portions of the fan may be either ramps or recesses. Furthermore, the nut has a closed end for insulating the armature shaft from the operator.       Recently Added Patents Authentication of brand name product ownership using public key cryptography Azaindazoles useful as inhibitors of kinases Management computer and computer system management method Methods and compositions for improved F-18 labeling of proteins, peptides and other molecules Optical device Methods of treating semiconducting materials including melting and cooling Combination bussing and washing tray   Randomly Featured Patents Window component extrusion Process for the recovery of gold Chimeric filovirus glycoprotein Audio duplicate detector Computer enclosure Polymeric film Apparatus for inputting special character and method for the same Forming of materials by extrusion Carry-on case having wheels and an extendable handle Hopping vehicle © 2006-2008 PatentGenius. All Rights Reserved.