US4905465A — Rotary cutting member for use with lawn mowers an…

Claim 1

Independent Claim 104 words

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.

Claim 2

Independent Claim 104 words

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.

Claim 3

Dependent Claim 16 words

An apparatus, as in claim 1, wherein: (a) said openings are disposed radially on said rim.

Claim 4

Dependent Claim 16 words

An apparatus, as in claim 2, wherein: (a) said openings are disposed circumferentially around said rim.

Claim 5

Dependent Claim 12 words

An apparatus, as in claim 1, wherein: (a) said rim is cylindrical.

Claim 6

Dependent Claim 29 words

An apparatus, as in claim 4, wherein: (a) said rim defines an enclosed volume; and (b) said hub and said rim securing means are disposed within said enclosed volume.

Claim 7

Dependent Claim 41 words

An apparatus, as in claim 5, wherein: (a) said rim securing means includes at least an arm means having first and second ends; and (b) said first end is operably associated with said hub and said second end with said rim.

Claim 8

Dependent Claim 25 words

An apparatus, as in claim 1, wherein: (a) said rim securing means includes a plurality of arm means extending circumferentially and radially from said hub.

Claim 9

Dependent Claim 44 words

An apparatus, as in claim 7, wherein: (a) each of said plurality of arm means includes first and second ends; and (b) each of said arm means first end is operably associated with said hub and said arm means second end with said rim.

Claim 10

Dependent Claim 20 words

An apparatus, as in claim 8, wherein: (a) each pair of adjacent arm means and said rim define an opening.

Claim 11

Dependent Claim 23 words

An apparatus, as in claim 9, wherein: (a) said at least three stepped openings are disposed in said rim between adjacent arm means.

Claim 12

Independent Claim 97 words

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.

Claim 13

Independent Claim 97 words

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.

Claim 14

Dependent Claim 36 words

An apparatus, as in claim 11, wherein: (a) said rim includes a plurality of openings for securing said flexible cutting filaments thereto; and (b) at least three of said plurality of openings are vertically spaced apart.

Claim 15

Dependent Claim 31 words

An apparatus, as in claim 12, wherein: (a) said plurality of openings are in groups; and (b) openings in each of said groups are circumferentially and vertically disposed from each other.

Claim 16

Dependent Claim 19 words

An apparatus, as in claim 13, wherein: (a) each of said groups includes at least first and second openings.

Claim 17

Dependent Claim 24 words

An apparatus, as in claim 14, wherein: (a) each of said plurality of flexible filaments is associated with each of said groups of openings.

Claim 18

Dependent Claim 42 words

An apparatus, as in claim 15, wherein: (a) each of said plurality of flexible cutting filaments includes first and second portions; and (b) said first portion is associated with said first opening and said second portion is associated with said second opening.

Claim 19

Dependent Claim 15 words

An apparatus, as in claim 16, wherein: (a) said triangular cross-section includes concave side portions.

Claim 20

Dependent Claim 21 words

An apparatus as in claim 17, wherein: (a) said triangular cross-section includes edge portions; and (b) said edge portions are knife-edged.

Claim 21

Dependent Claim 43 words

An apparatus as in claim 18, wherein: (a) said edge portions each includes first and second planar surfaces intersecting at an angle; (b) said concave side portions extend between respective pair of said edge portions; and (c) said concave side portions are arcuate.

Claim 22

Dependent Claim 21 words

An apparatus, as in claim 11, wherein: (a) each of said plurality of flexible cutting filaments has a substantially triangular cross-section.

Claim 23

Dependent Claim 91 words

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.

Claim 24

Dependent Claim 91 words

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.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-03-05	1993-09-04	1994-03-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-03-05	1997-09-04	1998-03-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-03-05	2001-09-04	2002-03-06	$7700.00	Window Closed / Lapsed

Rotary cutting member for use with lawn mowers and the like

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