Patents by Inventor Robert Atchley

Robert Atchley 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).

  • Torque-limited chain tensioning for power tools
    Patent number: 8595943
    Abstract: A chainsaw (100) has a chainsaw body (101), a cutting chain (103) driven by a motor, and a guide bar mounting stud (111) extending from the chainsaw body (101). The chainsaw (100) also has an adjustably connected guide bar (102) having a track for supporting the cutting chain (103) around a periphery of the guide bar (102) and an adjustment pin (114) extending from a side face thereof. The guide bar mounting stud (111) is configured to extend through an elongated slot (112) in the guide bar (102). The chainsaw (100) also has a cam (116) received on the guide bar mounting stud (111) and having an eccentric groove facing the guide bar (102). The adjustment pin (114) is received in the eccentric groove such that rotation of the cam (116) causes the guide bar (102) to move with respect to the chainsaw body (101), thereby tensioning the cutting chain (103).
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: December 3, 2013
    Assignee: MTD Products Inc
    Inventors: Jeremy L. Buttery, Robert M. Shymkus, Delbert E. Lucas, Robert Atchley
  • TORQUE-LIMITED CHAIN TENSIONING FOR POWER TOOLS
    Publication number: 20110167650
    Abstract: A chainsaw (100) has a chainsaw body (101), a cutting chain (103) driven by a motor, and a guide bar mounting stud (111) extending from the chainsaw body (101). The chainsaw (100) also has an adjustably connected guide bar (102) having a track for supporting the cutting chain (103) around a periphery of the guide bar (102) and an adjustment pin (114) extending from a side face thereof. The guide bar mounting stud (111) is configured to extend through an elongated slot (112) in the guide bar (102). The chainsaw (100) also has a cam (116) received on the guide bar mounting stud (111) and having an eccentric groove facing the guide bar (102). The adjustment pin (114) is received in the eccentric groove such that rotation of the cam (116) causes the guide bar (102) to move with respect to the chainsaw body (101), thereby tensioning the cutting chain (103).
    Type: Application
    Filed: June 24, 2009
    Publication date: July 14, 2011
    Inventors: Jeremy L. Buttery, Robert M. Shymkus, Delbert E. Lucas, Robert Atchley