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US3916563A Expired / Lapsed US ⏱️ 0.0 years remaining

Lawn edge trim guard

Assignee: Individual
•
Filing: 1974-07-01
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Granted: 1975-11-04
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Expires: 1994-07-01
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Abstract

Abstract A lawn edge trim guard adapted to be made of rot and corrosive resistant material, such as injection molded plastic, is adapted to be inserted into the ground at the edge of a lawn. One member of the guard consists of an imperforate plate extending vertically into the soil to a depth beyond which grass roots and roots of garden flowers are unable to grow and propagate in a horizontal direction. Attached to the upper end of the vertical plate is a horizontal grid of shorter plates, the upper edges of which are adapted to be substantially level with the surface of the soil and which permit the grass to grow up through the interstices of the grid, the depth of the shorter plates being such as to permit the grass roots to grow and propagate beneath such plates. One edge of the longer plate is provided with a substantially coextensive flexible plate extension, the outer end of which is formed with a pair of parallel plate members providing a female socket member into which the outer end of an adjacent similar guard is adapted to be received. The first of said guards is also provided with such an outer end at the end opposite such female socket member. Such outer end is provided with at least one rounded protuberence fitting into at least one circular opening in one of said parallel plate members thus providing a rotatable joint whereby adjacent trim guard members may adjust themselves to follow the surface vertical contours of the lawn. The flexible plate extension permits adjacent guard members to be adjusted to follow the horizontal contours of the lawn. The grid itself is preferably of sufficient rigidity and strength to support the wheels of a lawn mower operating at the lawn edge.

Inventors

  • 👤 George E Tedesh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 14:23
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/28

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 229 words
A lawn trim guard comprising; a. a first guard assembly comprising a vertical imperforate plate, the vertical depth of said plate being greater than the root propagating depth of lawn grass; b. a grid attached to and extending along the upper edge of said plate, said grid comprising transverse and lateral slats forming a plurality of cells open at the top and bottom, the depth of said cells being less than said root propagating depth; c. a second guard assembly substantially like said first guard assembly and having its vertical plate extending horizontally beyond its grid; d. said first guard assembly having an elongated socket attached along one vertical edge of its vertical plate; e. said socket comprising a pair of side plates extending from the bottom of said socket along the entire height of said vertical plate and being imperforate for a first predetermined distance from said socket bottom; f. the extension of the vertical plate of said sceond guard assembly being received into sAid elongated socket of said first quard assembly to a second prdetermined distance from the bottom of said socket, said second predetermined distance being less than said first predetermined distance by an amount sufficient to permit relative vertical rotational adjustment of said extension within said socket; and g. detent means for retaining said extension in said socket in each position of its vertical adjustment.
Claim 2
Dependent Claim 229 words
A lawn trim guard comprising; a. a first guard assembly comprising a vertical imperforate plate, the vertical depth of said plate being greater than the root propagating depth of lawn grass; b. a grid attached to and extending along the upper edge of said plate, said grid comprising transverse and lateral slats forming a plurality of cells open at the top and bottom, the depth of said cells being less than said root propagating depth; c. a second guard assembly substantially like said first guard assembly and having its vertical plate extending horizontally beyond its grid; d. said first guard assembly having an elongated socket attached along one vertical edge of its vertical plate; e. said socket comprising a pair of side plates extending from the bottom of said socket along the entire height of said vertical plate and being imperforate for a first predetermined distance from said socket bottom; f. the extension of the vertical plate of said sceond guard assembly being received into sAid elongated socket of said first quard assembly to a second prdetermined distance from the bottom of said socket, said second predetermined distance being less than said first predetermined distance by an amount sufficient to permit relative vertical rotational adjustment of said extension within said socket; and g. detent means for retaining said extension in said socket in each position of its vertical adjustment.
Claim 3
Dependent Claim 42 words
A lawn edge trim guard as in claim 1 in which said socket is attached to the vertical plate of said first guard assembly by an imperforate flexible connecting member extending along the entire vertical length of said last named vertical plate.
Claim 4
Dependent Claim 116 words
A lawn edge trim quard as in claim 1 in which the spacing between said side plates is equal to the thickness of the vertical plate extension received into said socket, at least one of said side plates being provided with a detent recess, and the vertical plate extension of said second guard assembly being provided with a knob which is received within said recess to releasably retain said extension in said socket; the distance between said knob and the outer vertical edge of said last named vertical plate extension being less than the distance of said recess to the bottom of said socket, whereby said last named vertical plate extension is rotatable about said knob.

References Cited (Backward Citations)

US1310331A Cited
US778977A Cited
US1029260A Cited
US1977021A Cited
US2533626A Cited
US2821809A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-03 1979-05-05 1979-11-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-03 1983-05-05 1983-11-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-03 1987-05-05 1987-11-04 $7700.00 Window Closed / Lapsed

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