US4033080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pole to be connected with a wood pole and method of replacing the lower part of the wood pole with the concrete pole
Assignee: Nippon Concrete Industries Co Ltd
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Filing: 1976-01-20
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Granted: 1977-07-05
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Expires: 1996-01-20
Abstract
Abstract This invention relates to a concrete pole having a reinforcing band and a cylindrical projection, protruding upward, at the outer periphery of the upper end, and a method of replacing the lower part of a wood pole with the said concrete pole. In order to replace the lower part of a wood pole, the lower part is first cut away from the upper part of the wood pole in use, and pulled out of the ground. Subsequently, the concrete pole is driven instead of the removed lower wood pole. Thereafter, the lower end of the upper wood pole is inserted into the cylindrical projection so as to be integrally connected with the concrete pole.
Inventors
- 👤 Yoshikiyo Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/02; E04H12/22; E04H12/2253; E04H12/2276; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49735
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
145 words
A means for connecting a round concrete pole to a second pole comprising: a concrete pole; a cylindrical metal connecting tube, one end of said connecting tube telescoped over one end of said concrete pole; a first metal plate within said connecting tube and integral therewith, the flat surfaces of said first plate transverse to the longitudinal axis of said connecting tube, said first metal plate positioned against said pole end, the contiguous surfaces of said concrete pole and said connecting tube being integral by the process of molding said concrete within said connecting tube; a second circular plate at the other end of said concrete pole; headed bolts with nuts extending through said concrete between said first and said second plates to compress said concrete pole between said plates; and the other end of said connecting tube being open to receive said second pole.
Claim 2
Dependent Claim
145 words
A means for connecting a round concrete pole to a second pole comprising: a concrete pole; a cylindrical metal connecting tube, one end of said connecting tube telescoped over one end of said concrete pole; a first metal plate within said connecting tube and integral therewith, the flat surfaces of said first plate transverse to the longitudinal axis of said connecting tube, said first metal plate positioned against said pole end, the contiguous surfaces of said concrete pole and said connecting tube being integral by the process of molding said concrete within said connecting tube; a second circular plate at the other end of said concrete pole; headed bolts with nuts extending through said concrete between said first and said second plates to compress said concrete pole between said plates; and the other end of said connecting tube being open to receive said second pole.
Claim 3
Dependent Claim
33 words
A concrete pole to be connected with a second pole, as claimed in claim 1, in which a prestressed concrete pole or a reinforced concrete pole is used as the said concrete pole.
Claim 4
Dependent Claim
52 words
The means of claim 1 further comprising a second pole nested within said other end of said connecting tube, and a binding agent between the surfaces of said second pole and said connecting tube whereby said second pole is made integral with said concrete pole and water is excluded from said connection.
Claim 5
Dependent Claim
13 words
The means of claim 1 wherein said second pole is made of wood.
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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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |