Patents by Inventor Per Erik Ericsson

Per Erik Ericsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6186879
    Abstract: A rotary power tool having a housing (10) with a tubular extension (12), a rotation motor located in the housing, and an output shaft (13), wherein the output shaft (13) comprises a first section (23), a second section (26) and a connection device (30) forming a drive connection between the shaft sections without any radial play but with a flexibility to angle deviations between the shaft sections (23, 26), the connection device (30) including a sleeve element (31) with a conical socket portion (32) for mounting on a conical surface (33) on the first shaft section (23), a recess (34) of rectangular cross section for torque transfer to a matching rectangular projection (35) on the second shaft section (26), and a ball bearing (43) mounted between a cylindrical socket portion (42) on the sleeve element (31) and a cylindrical end portion (36) of the second shaft section (26) for providing an accurate radial guidance and support of the rear end portion (36) of the second shaft section (26) relative to the sleeve
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: February 13, 2001
    Assignee: Atlas Copco Tools AB
    Inventor: Per Erik Ericsson