Patents Assigned to Ronald Thomas
  • Combined A.C./D.C. electric lawn mower
    Patent number: 4333302
    Abstract: An electric lawn mower including an A.C. motor and a D.C. motor connected through a gearing and clutch arrangement for operation of either motor separately or concurrently. The gearing arrangement includes a mower blade drive gear acted upon by either of the respective driven gears associated with the A.C. and D.C. motors. The mower may be operated by either the A.C. motor or the D.C. motor separately, or by both motors combined to provide increased power to the cutting blade for mowing of dense areas of vegetation.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: June 8, 1982
    Assignee: Ronald Thomas
    Inventors: Ronald Thomas, Donald H. Smith