US3602111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paving blocks
Assignee: Individual
•
Filing: 1969-06-09
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Granted: 1971-08-31
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Expires: 1989-06-09
Abstract
Abstract Paving blocks for the formation of paving by which it is avoided cracks produced by flexing, or expansion and contraction on continuous pavings or large paving flags, and repair and replacement is readily and easily done. These blocks are prefabricated in concrete, ceramic, plastic or other materials, upper part of which presents a prismatic shape with a regular polygonal section, preferably hexagonal, and with the lower part provided with curved surface depressions and protrusions that determine and allow at the same time for their linkage and articulation.
Inventors
- 👤 Fermin Laguardia Clemente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:54
CPC Classifications
E; E01; E01C; E01C5/00; E01C2201/00; E01C2201/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
100 words
A paving block for use in forming a pavement, said block having the general shape of a prismatic regular hexagon having six sidewalls, wherein: the upper plane edges of said block are beveled; the lower half of said block is laterally provided with a pair of curved depressions and a pair of curved protrusions, the radii of said curved depressions and protrusions being equal to the radius of the imaginary cylinder circumscribed about the prism, said depressions being arranged on two opposite sidewalls, said protrusions being arranged on two opposite sidewalls; and wherein two opposite sidewalls are flat planar surfaces.
Claim 2
Dependent Claim
100 words
A paving block for use in forming a pavement, said block having the general shape of a prismatic regular hexagon having six sidewalls, wherein: the upper plane edges of said block are beveled; the lower half of said block is laterally provided with a pair of curved depressions and a pair of curved protrusions, the radii of said curved depressions and protrusions being equal to the radius of the imaginary cylinder circumscribed about the prism, said depressions being arranged on two opposite sidewalls, said protrusions being arranged on two opposite sidewalls; and wherein two opposite sidewalls are flat planar surfaces.
Claim 3
Dependent Claim
46 words
A paving block as defined in claim 1, wherein the upper surfaces of said protrusions and the lower surfaces of the portion of said block extending over said depressions are provided with a complementary rake to facilitate coupling between depressions and protrusions of the juxtaposed blocks.
References Cited (Backward Citations)
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BE518653A
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US345726A
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USRE16876E
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DE514828C
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US2025496A
Cited
FR921289A
Cited
US2605681A
Cited
GB647812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |