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US 7,613,552 B2Granted
Lawn-mower with sensor
OwnerFabrizio Berniniinventor
Life of this patent
Estimating the term…
Abstract
Lawn-mower comprising one or more motor-driven wheels and at least one cutting device, and further comprising elements for determining a distance value of an external mass to modify the behaviour of the lawn-mower in response to the distance.
Claims25
Lawn-mower (1) comprising:
- a motor-drive (2),
- a cutting device (3),
- a presence sensor (4) for detecting a presence of an external mass within a predetermined distance which is greater than or equal to zero,
- a grass sensor for detecting regions of grass having a surface height that is indicative of an uncut region of grass that has not already been cut, and
- means for operating said lawn-mower (1) in response to receiving a signal from said grass sensor and said presence sensor (4), wherein said means for operating said lawn-mower controls operation of said motor-drive to direct said lawn-mower to said uncut region of grass and said presence sensor comprises an electronic proximity sensor that includes an oscillator comprising a metal-oxide-semiconductor (MOS) junction, wherein the oscillator provides an electric output oscillation in response to variations of an input signal.
2 more elements
Dependencies are inferred from the claim text.