Patent US3715958A successfully refreshed from Google Patents.
US3715958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preformed manhole body
Assignee: Individual
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Filing: 1971-01-19
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Granted: 1973-02-13
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Expires: 1991-01-19
Abstract
Abstract A manhole body which is preformed of plastic or concrete and reinforced to withstand the weight exerted by the ground and outside sources of water, which manhole body may be of a size and shape to fit on a sewer line of any size and depth, with the sleeve extending to the surface so as to give access into the manhole body which has a suitable cover therefor. The manhole bodies are of unitary, tapered construction and are so designed as to fit in telescoped relation to conserve room during shipping or storage. Transverse semi-circular notches are formed in the lower side of each manhole body so as to fit the upper contour of a sewer line, so when a cementitious material, such as concrete, is poured to seal the bottom and sides of the manhole, the top portion of the sewer line, above the concrete, may be broken away to provide a sewage outlet from the manhole body and access to the sewer line admit cleaning tools.
Inventors
- 👤 D Crawford
- 👤 J Elvington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:22
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/124; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
213 words
A unitary, reconstructed manhole body comprising; a. a unitary body, which body is hollow and is formed of moldable material, 1. said unitary body having a lower portion, the lower portion of said unitary, hollow body being inclined upwardly and inwardly throughout the entire length thereof, 2. the lower portion of said unitary, hollow body being open and having opposed notched formed therein to straddle a pipe, 3. said unitary body having an upper portion, the lower end of which is joined in unitary relation with the upper end of said lower portion of said unitary, hollow body, 4. said upper, unitary hollow body portion converging upwardly and inwardly from the juncture with said lower body portion, b. the upper end of said unitary hollow body portion having a hollow, cylindrical neck portion joined in unitary relation with the upper end of said upper body portion, 1. said upper portion of said body being adapted to support a fitting for a man hole cover, c. an annular connecting ring fitted on the upper end of said cylindrical neck portion, d. a sleeve interfitted with said ring and extending upwardly to a position near the surface of the terrain, and e. a man hole cover flange fitted on the upper end of said sleeve.
Claim 2
Dependent Claim
213 words
A unitary, reconstructed manhole body comprising; a. a unitary body, which body is hollow and is formed of moldable material, 1. said unitary body having a lower portion, the lower portion of said unitary, hollow body being inclined upwardly and inwardly throughout the entire length thereof, 2. the lower portion of said unitary, hollow body being open and having opposed notched formed therein to straddle a pipe, 3. said unitary body having an upper portion, the lower end of which is joined in unitary relation with the upper end of said lower portion of said unitary, hollow body, 4. said upper, unitary hollow body portion converging upwardly and inwardly from the juncture with said lower body portion, b. the upper end of said unitary hollow body portion having a hollow, cylindrical neck portion joined in unitary relation with the upper end of said upper body portion, 1. said upper portion of said body being adapted to support a fitting for a man hole cover, c. an annular connecting ring fitted on the upper end of said cylindrical neck portion, d. a sleeve interfitted with said ring and extending upwardly to a position near the surface of the terrain, and e. a man hole cover flange fitted on the upper end of said sleeve.
Claim 3
Dependent Claim
20 words
A unitary, reconstructed manhole body comprising; a. a unitary body, which body is hollow and is formed of moldable material,
Claim 4
Dependent Claim
20 words
A unitary, reconstructed manhole body comprising; a. a unitary body, which body is hollow and is formed of moldable material,
Claim 5
Dependent Claim
25 words
said unitary body having a lower portion, the lower portion of said unitary, hollow body being inclined upwardly and inwardly throughout the entire length thereof,
Claim 6
Dependent Claim
25 words
said unitary body having a lower portion, the lower portion of said unitary, hollow body being inclined upwardly and inwardly throughout the entire length thereof,
Claim 7
Dependent Claim
66 words
said upper portion of said body being adapted to support a fitting for a man hole cover, c. an annular connecting ring fitted on the upper end of said cylindrical neck portion, d. a sleeve interfitted with said ring and extending upwardly to a position near the surface of the terrain, and e. a man hole cover flange fitted on the upper end of said sleeve.
Claim 8
Dependent Claim
66 words
said upper portion of said body being adapted to support a fitting for a man hole cover, c. an annular connecting ring fitted on the upper end of said cylindrical neck portion, d. a sleeve interfitted with said ring and extending upwardly to a position near the surface of the terrain, and e. a man hole cover flange fitted on the upper end of said sleeve.
Claim 9
Dependent Claim
38 words
A unitary, preconstructed manhole body as defined in claim 1; wherein a. said lower body portion, said upper neck portion and said converging portion between the lower body portion and the cylindrical neck portion have reinforcing material therein.
Claim 10
Dependent Claim
20 words
the lower portion of said unitary, hollow body being open and having opposed notched formed therein to straddle a pipe,
Claim 11
Dependent Claim
20 words
the lower portion of said unitary, hollow body being open and having opposed notched formed therein to straddle a pipe,
Claim 12
Dependent Claim
30 words
said unitary body having an upper portion, the lower end of which is joined in unitary relation with the upper end of said lower portion of said unitary, hollow body,
Claim 13
Dependent Claim
30 words
said unitary body having an upper portion, the lower end of which is joined in unitary relation with the upper end of said lower portion of said unitary, hollow body,
Claim 14
Dependent Claim
56 words
A unitary, preconstructed manhole body as defined in claim 1; wherein a. said lower portion of said hollow boDy and said converging portion between said lower body portion and said neck postion being polygonal in cross section, with said lower body portion and said converging portion adapted to receive other manhole body portions in nested relation.
Claim 15
Dependent Claim
25 words
A unitary, preconstructed manhole body as defined in claim 1; wherein a. said unitary, molded, hollow body is molded of plastic reinforced with fiber glass.
Claim 16
Dependent Claim
47 words
said upper, unitary hollow body portion converging upwardly and inwardly from the juncture with said lower body portion, b. the upper end of said unitary hollow body portion having a hollow, cylindrical neck portion joined in unitary relation with the upper end of said upper body portion,
Claim 17
Dependent Claim
47 words
said upper, unitary hollow body portion converging upwardly and inwardly from the juncture with said lower body portion, b. the upper end of said unitary hollow body portion having a hollow, cylindrical neck portion joined in unitary relation with the upper end of said upper body portion,
Claim 18
Dependent Claim
19 words
A unitary, preconstructed manhole body as defined in claim 2; wherein a. said unitary, molded body is of concrete.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |