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US 4,899,524 AGranted
Height adjuster for lawn mowers
OwnerFrank A. Eillesinventor
Life of this patent
Estimating the term…
Abstract
A lawnmower has a series of openings in the housing into which wheel axles may be selectively engaged to adjust the cutting height. The axle ends are grooved, and the housing provided with a slot into which a clip is insertible to coact with the groove and retain the axle in position.
Claims6
In a lawnmower including:
- a housing;
- wheels and wheel axles for supporting said housing from a ground surface;
- said housing having a series of vertically spaced apart bores therein associated with each said wheel for selectively engaging a wheel axle therein for varying the clearance of the housing from the ground surface, each said axle having adjacent the proximal end thereof a peripheral groove, the improvement wherein said lawnmower comprises:
- guide means on said housing associated with each series of bores, said guide means comprising a slotted passageway, each said bore of an associated series of bores being completely intersected by said passageway, and
- blade means having a plurality of transversely aligned corrugations therealong slidable along each said slotted passageway, said blade means having an elongated opening to engage said peripheral groove therein to secure a said axle in a selected bore, with corrugated portions of said blade means in interfering relationship with said guide means along the length thereof.
2 more elements
In a lawnmower including:
- a housing;
- wheels and wheel axles for supporting said housing from a ground surface;
- said housing having a series of spaced apart bores therein associated with each wheel for selectively engaging a wheel axle therein for varying the clearance of the housing from the ground surface, the improvement wherein each said axle is provided adjacent the proximal end thereof with a peripheral groove, and wherein said lawnmower comprises;
- guide means on said housing adjacent each series of bores, said guide means having at least one surface undulation therealong, and
- blade means slidable along each said guide means, said blade means having a transversely corrugated free edge to engage said peripheral groove to secure a said axle in a selected bore, one of said blade means and said guide means being provided with a stop to limit travel of said blade means along said guide means such that when said blade means is positioned at its travel limit, a peak of a said corrugation remote from said wheel is in horizontal alignment with the axis of each said bore, and at least one peak of a said corrugation is in cooperative alignment with said undulation.
2 more elements
Dependencies are inferred from the claim text.