Rotary cutting member for use with lawn mowers and the like
AssigneeTrim-A-Lawn Corporation
InventorsDallas W. Jones, Matthew F. Orr
Life of this patent
Estimating the term…
Abstract
A rotary cutting member for use with lawn mowers and the like includes a continuous rim having at least three stepped openings at different elevations relative to the ground for securing at least three flexible cutting filaments to the rim, thereby providing at least three cutting planes when the rotary member is rotating.
Claims21
An apparatus for holding a plurality of flexible cutting filaments for cutting grass and the like, comprising:
- (a) a rotary member;
- (b) said rotary member including a hub having means for mounting said rotary member to a drive means;
- (c) said rotary member including a continuous rim disposed around said hub;
- (d) said rotary member including means for securing said hub to said rim;
- and
- (e) said rim including at least three stepped openings at different elevations relative to the ground, for securing at least three flexible filament to said rim, thereby providing at least three cutting planes when said rotary member is rotating.
An apparatus for cutting grass and the like, comprising:
- (a) a rotary member;
- (b) said rotary member including a hub having means for mounting said rotary member to drive means;
- (c) said rotary member including a continuous rim disposed around said hub;
- (d) said rotary member including means for securing said rim to said hub;
- (e) a plurality of flexible cutting filaments being operably associated with and extending outwardly from said rim;
- and
- (f) means for securing said flexible cutting filaments to said rim for providing at least three cutting planes when said rotary member is rotating.
A cutting element for attachment to a rotary member in a lawn mower or the like for cutting grass and the like, comprising:
- (a) a flexible filament;
- (b) said filament being substantially triangular in cross-section;
- (c) said triangular cross-section including edge portions;
- (d) said edge portions are knife-edged;
- (e) said edge portions each including first and second planar surfaces intersecting at an angle;
- (f) said triangular cross-section including concave side portions extending between respective pair of said edge portions;
- and
- (g) means for securing said flexible filament to a rotary member.
Dependencies are inferred from the claim text.