Patent US644467A successfully refreshed from Google Patents.
Patent US4074479A successfully refreshed from Google Patents.
US4074479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn edging
Assignee: Individual
•
Filing: 1977-04-25
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Granted: 1978-02-21
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Expires: 1997-04-25
Abstract
Abstract An open bottomed trapezoidal box having horizontally outwardly extending flanges at the free edges is provided at intervals with clips which join the horizontal flanges and which join successive lengths of the linear open box sections. The linear sections may be straight, curved on one or more radii, or angular, for flexibility in forming any outline. Alternate embodiments of the clip are shown. The clip may be used in straight lengths whether the sections are curved, angular, or straight.
Inventors
- 👤 Richard W. Krupka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:31
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A lawn edging comprising linear box sections having a top wall and two side walls wherein the novelty comprises side walls that are straight in lateral cross-section and inclined between about 10° and 30° to a vertical plane to form an isosceles trapezoid with said top wall and an underlying surface, outwardly directed flanges at the bottom of each side wall, and a plurality of clips, each said clip having an inwardly directed channel at each end to receive a said outwardly directed flange and an outwardly directed abutment engageable with the inner margin of the flange to retain the flange in the channel.
Claim 2
Dependent Claim
104 words
A lawn edging comprising linear box sections having a top wall and two side walls wherein the novelty comprises side walls that are straight in lateral cross-section and inclined between about 10° and 30° to a vertical plane to form an isosceles trapezoid with said top wall and an underlying surface, outwardly directed flanges at the bottom of each side wall, and a plurality of clips, each said clip having an inwardly directed channel at each end to receive a said outwardly directed flange and an outwardly directed abutment engageable with the inner margin of the flange to retain the flange in the channel.
Claim 3
Dependent Claim
18 words
The device of claim 1 wherein the abutment is a flange projecting from the surface of the clip.
Claim 4
Dependent Claim
29 words
The device of claim 1 wherein the clip has a generally flat bottom surface connecting the flanges, and is very limited in length in a direction along the edging.
Claim 5
Dependent Claim
17 words
The device of claim 3 wherein said abutment is an offset in said generally flat bottom surface.
Claim 6
Dependent Claim
19 words
The device of claim 1 wherein said top wall is joined to said side walls by a straight edge.
Claim 7
Dependent Claim
19 words
The device of claim 1 where said top wall is joined to said side walls by a curved edge.
Claim 8
Dependent Claim
19 words
The device of claim 1 wherein said top wall is joined to said side walls by an angular edge.
Claim 9
Dependent Claim
57 words
The device of claim 1 wherein the clip has a generally flat bottom surface connecting the flanges, and is very limited in length in a direction along the edging, and said abutment is an offset in said generally flat bottom surface and said top wall is connected to each of said side walls along a linear edge.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |