Patent US3018138A successfully refreshed from Google Patents.
US4149972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste water treating apparatus
Assignee: Sekisui Chemical Co Ltd
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Filing: 1978-02-14
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Granted: 1979-04-17
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Expires: 1998-02-14
Abstract
Abstract A waste water treating apparatus comprising thin fan-shaped sheets made of an unfoamed synthetic resin and assembled via spacers. A tubular member made of a synthetic resin is inserted through holes in the fan-shaped sheets and holes in the spacers to form an assembly of the sheets. The assembly is radially disposed around a rotating shaft and forms a generally circular rotary body, the tubular member having a metallic core shaft inserted therein, and the core shaft being secured to a frame for holding the rotary body.
Inventors
- 👤 Noboru Iwai
- 👤 Takashi Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:37
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/082; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
228 words
A waste-water treating apparatus comprising: a rotary shaft; a rotary body surrounding said shaft, said rotary body being comprised: a plurality of adjacent fan-shaped sheets of unfoamed synthetic resin radially postioned around said rotary shaft, each sheet being comprised of at least two fan-shaped members radially spaced from said rotary shaft, and each fan-shaped member having a plurality of holes therethrough aligned with holes in the next adjacent fan-shaped member, and a plurality of spacer means between said fan-shaped members and between said aligned holes in said fan-shaped members for spacing said fan-shaped sheets apart, each spacer means being comprised of a projecting portion spaced away from one of said fan-shaped members and having an opening therethrough between said aligned holes in said fan-shaped members, and a collar extending from said projecting portion connecting said projecting portion and said fan-shaped member; a plurality of tubular members of synthetic resin positioned through said aliged holes in said fan-shaped members and said openings in said projections of said spacer means; a plurality of metallic cores through said tubular members; framing means at the ends of said rotary shaft for holding said rotary body onto said shaft, said framing means being connected to said shaft and said metallic cores through said tubular member; and rotating means connected to said rotary shaft for rotating said shaft and said rotary body connected thereto.
Claim 2
Dependent Claim
228 words
A waste-water treating apparatus comprising: a rotary shaft; a rotary body surrounding said shaft, said rotary body being comprised: a plurality of adjacent fan-shaped sheets of unfoamed synthetic resin radially postioned around said rotary shaft, each sheet being comprised of at least two fan-shaped members radially spaced from said rotary shaft, and each fan-shaped member having a plurality of holes therethrough aligned with holes in the next adjacent fan-shaped member, and a plurality of spacer means between said fan-shaped members and between said aligned holes in said fan-shaped members for spacing said fan-shaped sheets apart, each spacer means being comprised of a projecting portion spaced away from one of said fan-shaped members and having an opening therethrough between said aligned holes in said fan-shaped members, and a collar extending from said projecting portion connecting said projecting portion and said fan-shaped member; a plurality of tubular members of synthetic resin positioned through said aliged holes in said fan-shaped members and said openings in said projections of said spacer means; a plurality of metallic cores through said tubular members; framing means at the ends of said rotary shaft for holding said rotary body onto said shaft, said framing means being connected to said shaft and said metallic cores through said tubular member; and rotating means connected to said rotary shaft for rotating said shaft and said rotary body connected thereto.
Claim 3
Dependent Claim
21 words
An apparatus as claimed in claim 1, wherein said unfoamed synthetic resin is a hard vinyl chloride resin or polyethylene resin.
Claim 4
Dependent Claim
15 words
An apparatus as claimed in claim 1, wherein ribs are formed on said fan-shaped members.
Claim 5
Dependent Claim
18 words
An apparatus as claimed in claim 1, wherein raised and depressed portions are formed on said fan-shaped members.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |