Patent US3745701A successfully refreshed from Google Patents.
US3745701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn block system
Assignee: Individual
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Filing: 1971-12-01
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Granted: 1973-07-17
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Expires: 1991-12-01
Abstract
Abstract A lawn defining system of co-acting slabs having upper surfaces specially angled to provide safe, efficient paths for rotary mowers, and having special stepped overlapping joints between slabs gapped beneath the overlap to allow relative motion and to prevent capillary action from drawing ground water into the joints; embodiments are provided for fence underlayment and for installation around building foundations.
Inventors
- 👤 J Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:49
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/22; E01C11/224; E01C11/227; A; A01; A01G; A01G9/00; A01G9/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
A lawn block system comprising: plural overlapping means in horizontal serial relation including first and second lawn blocks with step overlaps, each of said lawn blocks having, as viewed in transverse section, a bottom with a central recess along the length thereof, leaving longitudinal footings along the bottom margins, a top with a horizontal portion and a portion downwardly sloped from the horizontal portion; said horizontal portion extending a substantial fraction of the width of the lawn blocks and the downwardly sloped portion extending a greater fraction of said width than the horizontal portion; the first lawn block step joint structure comprising a full width longitudinal flush extension of the top having a vertical surface on the end, the second lawn block step joint structure comprising a vertical surface positioned to form a butt joint with the end of the extension of the first lawn block and a full width longitudinal extension of the bottom protrusive beyond said positioned vertical surface, the underneath surface of the first lawn block extension and the upper surface of the second lawn block extension proportioned to space apart vertically on assembly of said system, thereby leaving drainage space including space for sealing-material at the bottom of said butt joint.
Claim 2
Dependent Claim
205 words
A lawn block system comprising: plural overlapping means in horizontal serial relation including first and second lawn blocks with step overlaps, each of said lawn blocks having, as viewed in transverse section, a bottom with a central recess along the length thereof, leaving longitudinal footings along the bottom margins, a top with a horizontal portion and a portion downwardly sloped from the horizontal portion; said horizontal portion extending a substantial fraction of the width of the lawn blocks and the downwardly sloped portion extending a greater fraction of said width than the horizontal portion; the first lawn block step joint structure comprising a full width longitudinal flush extension of the top having a vertical surface on the end, the second lawn block step joint structure comprising a vertical surface positioned to form a butt joint with the end of the extension of the first lawn block and a full width longitudinal extension of the bottom protrusive beyond said positioned vertical surface, the underneath surface of the first lawn block extension and the upper surface of the second lawn block extension proportioned to space apart vertically on assembly of said system, thereby leaving drainage space including space for sealing-material at the bottom of said butt joint.
Claim 3
Dependent Claim
70 words
A lawn block system as recited in claim 1, wherein the extension of the first lawn block is longer than the extension of the second lawn block, thereby on assembly leaving a horizontal spacing between the end of the second lawn block extension and the first lawn block, said horizontal spacing being connective with said vertical spacing, thereby leaving a second drainage space connective with the first said drainage space.
Claim 4
Dependent Claim
44 words
A lawn block system as recited in claim 1, wherein all said lawn blocks are symmetrical in section about the centerline, said horizontal top portion being paralllel longitudinally with the bottom and having a said downsloping portion contiguous with both sides of the top.
Claim 5
Dependent Claim
37 words
A lawn block system as recited in claim 3, wherein the step joint overlap structure between the first and second lawn blocks includes matching vertical slots in the respective blocks, thereby forming a hole for a post.
Claim 6
Dependent Claim
59 words
A lawn block system as recited in claim 3, wherein at least a pair of said blocks have matching said step-joint overlap structures located at a diagonal angle to the longitudinal center lines thereof for thereby forming a corner assembly, and have matching slots vertically through the diagonally located step joint structure, thereby forming a holde for a post.
Claim 7
Dependent Claim
38 words
A lawn block system as recited in claim 2, wherein the horizontal top portion of all said blocks is parallel longitudinally with the bottom, and wherein the horizontal top portion is located to one side of the block.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |