Patent US4071996A successfully refreshed from Google Patents.
US4071996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reinforcing reinforced concrete post
Assignee: Kajima Corp
•
Filing: 1975-09-10
•
Granted: 1978-02-07
•
Expires: 1995-09-10
Abstract
Abstract A method of maintaining the load bearing integrity of a pre-existing reinforced concrete post during earthquake tremors wherein a sheet metal band is placed about the post and then made integral thereto by inserting a hardenable bonding agent between the band and the post.
Inventors
- 👤 Kiyoshi Muto
- 👤 Toshihiko Hisada
- 👤 Nobutsugu Ohmori
- 👤 Satoshi Bessho
- 👤 Naoharu Mori
- 👤 Katsuhiko Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:11
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/02; E04G23/0218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
In a pre-existing structurally sound load bearing reinforced concrete post, the method of maintaining the load bearing capacity of said post with bands during earthquake tremors, comprising the steps of: (a) providing a plurality of band segments, (b) bonding spacers to said band segments, (c) securing said segments around said post, thus fitting the spacers to said post, (d) fastening the segments together, thus completely forming said bands, (e) vertically spacing apart said bands one from the other along the longitudinal axis of said post, (f) interposing a hardenable bonding agent between said post and said bands, and (g) permitting said bonding agent to harden sufficiently to convert said post, bonding agent and bands into an integral structure, whereby decrease of load bearing capacity of said post is minimized by said bonded bands when said post is subjected to the attrition of flexing and shear due to earthquake tremors.
Claim 2
Dependent Claim
149 words
In a pre-existing structurally sound load bearing reinforced concrete post, the method of maintaining the load bearing capacity of said post with bands during earthquake tremors, comprising the steps of: (a) providing a plurality of band segments, (b) bonding spacers to said band segments, (c) securing said segments around said post, thus fitting the spacers to said post, (d) fastening the segments together, thus completely forming said bands, (e) vertically spacing apart said bands one from the other along the longitudinal axis of said post, (f) interposing a hardenable bonding agent between said post and said bands, and (g) permitting said bonding agent to harden sufficiently to convert said post, bonding agent and bands into an integral structure, whereby decrease of load bearing capacity of said post is minimized by said bonded bands when said post is subjected to the attrition of flexing and shear due to earthquake tremors.
References Cited (Backward Citations)
US796227A
Cited
US822587A
Cited
US863555A
Cited
US1391352A
Cited
US1512660A
Cited
US1696934A
Cited
US3050161A
Cited
US3355852A
Cited
US3338058A
Cited
US3390951A
Cited
US3798867A
Cited
US3858374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |