Lawnmowing apparatus with grass collector fullness detector

Details Lawnmowing apparatus with grass collector fullness detector Lawnmowing apparatus with grass collector fullness detector

Filed on

1995-05-02

Date issued

1997-02-25

Examiner

Melius, Terry Lee

Patent Class

Harvesters

SubClass

Motorized harvester

SubSubClass

With condition-responsive operation

Other Related Categories

56 103, 56 166, 56202, A01D 3470

Type

Patent

Status

active

Patent number

056050330

Description

ABSTRACT:
A fullness detector for the grass collector of a lawnmower includes a pressure actuated switch which is responsive to a pressure condition in an air flow passage for conveying grass cuttings between the lawnmower and the collector. Preferably the condition is the static pressure within the passage, which is sensed in a sensing zone shielded by a baffle. The baffle serves to increase the difference in static pressure measured in the zone between any two conditions of fullness of the collector, and to reduce grass build-up in the zone. The signal for the detector may be used to control a function of the lawnmower.

REFERENCES:
patent: 4761943 (1988-08-01), Parker et al.
patent: 4782650 (1988-11-01), Walker
patent: 4964266 (1990-10-01), Kolb
patent: 4981011 (1991-01-01), Olejak
patent: 5321939 (1994-06-01), Fuse et al.
patent: 5325650 (1994-07-01), Fuse et al.
patent: 5361568 (1994-11-01), Lin
patent: 5388394 (1995-02-01), Heismann

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