Patents Assigned to J. A. Masterson & Co.
  • Clutch employing articulated clutch shoes and flyweights
    Patent number: 4328884
    Abstract: A clutch employing articulated clutch shoes in pairs and flyweights for loads requiring variable torque such as lawn mowers. This articulated construction employs flyweights with cylindrical noses for placing pressure on clutch shoes of lower order of magnitude.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: May 11, 1982
    Assignee: J. A. Masterson & Co.
    Inventors: Robert D. Meldahl, Robert J. Borel
  • Clutch-brake system for rotary mower
    Patent number: 4226313
    Abstract: A combination blade clutching and braking mechanism for insuring the safer operation of rotary lawn mowers. The clutching and braking safety mechanism automatically disengages a power clutch while the brake is being engaged. Conversely, when the mower is to be operated, the mechanism automatically disengages the brake and engages the clutch. There is a provision for a dead man control wherein the brake engages automatically and the clutch is disengaged automatically should the operator accidentally lose control of the mower.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: October 7, 1980
    Assignee: J. A. Masterson & Co.
    Inventors: Robert D. Meldahl, Robert J. Borel