Grass mower blockage monitor
First Claim
1. A grass mower comprising a mower head having a rotating mower blade for curing grass to form clippings and for generating an air flow for moving the clippings, transport means carrying the mower head for movement across the ground in a mowing action, the mower head having an outlet opening for discharge of the mowed clippings in the air flow generated by the mower blade, a container for receiving and storing the mower clippings and a duct connected to the discharge opening at one end of the duct and to the container at an opposed end of the duct through which the clippings are transported by the air flow flowing through the duct, and indicator 1 means mounted on the duct and responsive to air flow rate in the duct for indicating reduction of air flow rate from a predetermined normal flow rate.
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Abstract
This invention provides an indicator means for a grass mower to detect blockages of a duct used to transport clippings from a mower head to a storage container. The indicator is mounted on the duct and is responsive to air flow rate in the duct thereby indicating any reduction of air flow rate from a predetermined normal flow rate and therefore when a blockage is occurring so that the operator can take actions to prevent it.
18 Citations
8 Claims
- 1. A grass mower comprising a mower head having a rotating mower blade for curing grass to form clippings and for generating an air flow for moving the clippings, transport means carrying the mower head for movement across the ground in a mowing action, the mower head having an outlet opening for discharge of the mowed clippings in the air flow generated by the mower blade, a container for receiving and storing the mower clippings and a duct connected to the discharge opening at one end of the duct and to the container at an opposed end of the duct through which the clippings are transported by the air flow flowing through the duct, and indicator 1 means mounted on the duct and responsive to air flow rate in the duct for indicating reduction of air flow rate from a predetermined normal flow rate.
Specification