×

Grass cutting device

  • US 5,507,137 A
  • Filed: 05/17/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 05/21/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A grass cutting device suitable for automatic and unattended operation, the device comprising:

  • at least one drive wheel;

    a power unit operatively coupled to said drive wheel to propel said device;

    a cutter mechanism to cut grass over which said device passes;

    an obstacle detection means capable of detecting an obstacle in the path of said device and being operably linked to said power unit to cause said device to retreat and turn away from said obstacle; and

    a suspended pivoting vane which detects long-grass and is responsive to the impact of long grass.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×