Lawnmowing apparatus having grass collector fullness detector wi

Details Lawnmowing apparatus having grass collector fullness detector wi Lawnmowing apparatus having grass collector fullness detector wi

1996-05-31

1998-07-07

Melius, Terry Lee

Harvesters

Cutting and catching

Catchers

56194, 56DIG8, A01D 3412

Patent

active

057750777

ABSTRACT:
A lawnmower includes a grass collector bin connected to a rotary blade by a chute. Mounted on the chute is a pressure-sensitive detector which senses when the bin is full, on the basis of a given pressure increase in the chute. The detector includes a microswitch having a sensing arm which contacts a center portion of an elastic membrane. The membrane communicates with the chute such that the center portion of the membrane is deflected in response to a given pressure increase in the chute, in order to actuate the switch. The membrane includes a bellows portion for increasing the distance by which the membrane can be deflected in response to the given pressure increase.

REFERENCES:
patent: 2698929 (1955-01-01), Greacen et al.
patent: 3863428 (1975-02-01), Baxter
patent: 3971198 (1976-07-01), Lane
patent: 4635047 (1987-01-01), Fox et al.
patent: 4782650 (1988-11-01), Walker
patent: 4964266 (1990-10-01), Kolb
patent: 5321939 (1994-06-01), Fuse et al.
patent: 5388394 (1995-02-01), Heismann

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