Patent US3565051A successfully refreshed from Google Patents.
Patent US3667186A successfully refreshed from Google Patents.
US3667186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete blocks
Assignee: Individual
•
Filing: 1970-08-17
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Granted: 1972-06-06
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Expires: 1990-08-17
Abstract
Abstract An outwardly bent engaging projection and an engaging depression are formed at each end of a substantially flat-shaped concrete block. The engaging depression receives an engaging projection of another concrete block, while the engaging projection of the first concrete block is received by an engaging depression of still another concrete block. Thus engaged with one another so as to be horizontally inseparable, a plurality of such concrete blocks form a honeycomblike framework which, supplemented with appropriately shaped other concrete blocks of the invention, is rendered into a desired substructure.
Inventors
- 👤 Shoji Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:45
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E04; E04H; E04H7/00; E04H7/22; E04H7/24; E04H7/26; E04H7/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
A concrete block structure comprising angularly disposed first, second and third concrete blocks each comprising a body part and at least one end part for rigid engaging connection with the end parts of the two other blocks; the end parts of the three blocks being identical in configuration; each end part of the blocks including an engaging projection extending outwardly from the body part, a second projection extending from the body part in a substantially divergent relationship to said engaging projection, and an engaging depression formed between said engaging projection and said second projection and being of a configuration complementary to said engaging projection; the engaging projection of said first block engaging the engaging depression of said third block; the engaging depression of said first block receiving the engaging projection of said second block; the second projection of said first block cooperating with the engaging projection of said third block to tightly grip the engaging projection of the second block therebetween.
Claim 2
Dependent Claim
161 words
A concrete block structure comprising angularly disposed first, second and third concrete blocks each comprising a body part and at least one end part for rigid engaging connection with the end parts of the two other blocks; the end parts of the three blocks being identical in configuration; each end part of the blocks including an engaging projection extending outwardly from the body part, a second projection extending from the body part in a substantially divergent relationship to said engaging projection, and an engaging depression formed between said engaging projection and said second projection and being of a configuration complementary to said engaging projection; the engaging projection of said first block engaging the engaging depression of said third block; the engaging depression of said first block receiving the engaging projection of said second block; the second projection of said first block cooperating with the engaging projection of said third block to tightly grip the engaging projection of the second block therebetween.
Claim 3
Dependent Claim
26 words
The structure as claimed in claim 1, wherein the bodY parts of the three blocks are disposed to form an angle of 120* between adjacent blocks.
Claim 4
Dependent Claim
42 words
The structure as claimed in claim 1, wherein the body parts of two blocks are disposed at an angle of 180* and the body part of the remaining block is disposed at right angle to said body parts of said two blocks.
Claim 5
Dependent Claim
23 words
The structure as claimed in claim 3, wherein said two blocks are each formed with a reinforcing protuberance on the rear surfaces thereof.
Claim 6
Dependent Claim
15 words
The structure as claimed in claim 3, wherein said two blocks have curved front surfaces.
Claim 7
Dependent Claim
63 words
The structure as claimed in claim 1, wherein side faces of the body parts of the blocks and surfaces defining said second projections of the blocks are provided with corresponding concavities which, when the blocks are engaged with each other, are registered with each other to form holes adapted to be filled with solidifiable material so as to prevent disengagement of the blocks.
Claim 8
Dependent Claim
27 words
The structure as claimed in claim 1, wherein at least some of the body parts of the blocks are hollow providing for the passage of reinforcing rods.
Claim 9
Dependent Claim
31 words
The structure as claimed in claim 1, wherein upper and lower surfaces of at least some of the body parts of the blocks are recessed for the passage of reinforcing rods.
Claim 10
Dependent Claim
24 words
The structure as claimed in claim 7, wherein at least one of the body parts of the blocks has an aperture extending transversely therethrough.
Claim 11
Dependent Claim
32 words
The structure as claimed in claim 1, wherein the engaging projection of each block is bent at its intermediate part in a direction away from the second projection of the same block.
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |