US3597925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retaining wall block
Assignee: Individual
•
Filing: 1968-09-30
•
Granted: 1971-08-10
•
Expires: 1988-09-30
Abstract
Abstract A retaining wall block has a base portion and one or more bracing struts integral therewith. As the blocks are stacked, the struts overlap to thereby provided self-support for the wall. The sides of the base portion also have interengaging portions which provide support.
Inventors
- 👤 Sugiaki Kusatake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
A block consisting of a base body having the form of a polygon with two opposite corners thereof cut off to form planes parallel to a diagonal line between two other opposite corners, and a bracing strut integral with said base body and having a centerline, said centerline intersecting said diagonal line at right angles at a point which is spaced one-quarter of the length of said diagonal line from one end thereof.
Claim 2
Dependent Claim
73 words
A block consisting of a base body having the form of a polygon with two opposite corners thereof cut off to form planes parallel to a diagonal line between two other opposite corners, and a bracing strut integral with said base body and having a centerline, said centerline intersecting said diagonal line at right angles at a point which is spaced one-quarter of the length of said diagonal line from one end thereof.
Claim 3
Dependent Claim
35 words
A block as claimed in claim 1, wherein said bracing strut has upper and lower faces generally parallel with said planes, and each of said faces has a concave portion and a convex portion therein.
Claim 4
Dependent Claim
43 words
A block as claimed in claim 1, wherein said base body has at said two other opposite corners square convex portions, and wherein said bracing strut has upper and lower faces, each of said faces having grooves therein, and a vertical projecting portion.
Claim 5
Dependent Claim
67 words
A block as claimed in claim 3, wherein said base body further comprises a section on the side of said base body opposite said bracing strut, said section in the form of a polygon with opposite surfaces thereof in the same planes as the ends of said square convex portions and with opposite corners thereof in said planes of said two opposite corners of said base body.
References Cited (Backward Citations)
US1460516A
Cited
US1770082A
Cited
US1938215A
Cited
GB635314A
Cited
US3176468A
Cited
US3379017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |