Patent US3759043A successfully refreshed from Google Patents.
US3759043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molds for use in manufacturing energy dissipating concrete blocks for river and marine works
Assignee: Individual
•
Filing: 1969-08-25
•
Granted: 1973-09-18
•
Expires: 1989-08-25
Abstract
Abstract Molds for use in manufacturing energy dissipating concrete blocks for river and marine works are composed of a set of plates coming into contact with concrete, each having a simple geometrical shape in its plan view, and various type of molds can be obtained by the combination of the plates. The concrete blocks manufactured by the molds can be easily combined to form regular geometrical designs having specific percentages of voids respectively, resulting in their vast application in all sorts of marine and river works.
Inventors
- 👤 K Tokunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:29
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/14; B; B28; B28B; B28B7/00; E02B3/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A mold for use in manufacturing energy dissipating concrete blocks comprising one or more each of a plurality of flat plates, each of said plates having a flat, planar concrete contacting surface of a predetermined geometrical design, the peripheral edges of said concrete contacting surfaces of each of said plates having predetermined length ratios, said edges of said plates operatively associated to be abutted to form a number of enclosed mold shapes, said geometrical designs of said concrete contacting surfaces comprising three L-shapes, four rectangles and one square.
Claim 2
Dependent Claim
88 words
A mold for use in manufacturing energy dissipating concrete blocks comprising one or more each of a plurality of flat plates, each of said plates having a flat, planar concrete contacting surface of a predetermined geometrical design, the peripheral edges of said concrete contacting surfaces of each of said plates having predetermined length ratios, said edges of said plates operatively associated to be abutted to form a number of enclosed mold shapes, said geometrical designs of said concrete contacting surfaces comprising three L-shapes, four rectangles and one square.
References Cited (Backward Citations)
FR322881A
Cited
US955230A
Cited
GB148922A
Cited
US1389817A
Cited
GB384191A
Cited
US2874442A
Cited
US2891397A
Cited
US3176468A
Cited
CH424649A
Cited
US3449857A
Cited
US3488964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |