US3959840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cleaning apparatus
Assignee: Individual
•
Filing: 1975-02-12
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Granted: 1976-06-01
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Expires: 1995-02-12
Abstract
Abstract In a pipe cleaning apparatus with a rotatable lapped coil spring for insertion into a pipe to be cleaned, a flexible tube is accommodated in the coil spring throughout a length thereof which at its one end is connected to an injection nozzle in communication with an end of the flexible tube which at its opposite end is connected to a high pressure water supply source.
Inventors
- 👤 Tadayoshi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A pipe cleaning apparatus comprising in combination: a rotatable and extensible cleaning member including a coil spring having the convolutions thereof in closely engaging relation and a flexible tube positioned concentrically therein; a source of high pressure water connected to one end of said flexible tube and a dischaerge nozzle mounted in and extending from the other end of said flexible tube; an auger having an outer diameter greater than that of said cleaning member connected to and extending from the end of said spring in surrounding relation to said nozzle; said nozzle having at least two diverging discharge outlets whereby a divergent stream of said high pressure water is discharged directed towards the peripheral portion of said auger; and means for rotating and advancing said cleaning member into the pipe to be cleaned.
Claim 2
Dependent Claim
134 words
A pipe cleaning apparatus comprising in combination: a rotatable and extensible cleaning member including a coil spring having the convolutions thereof in closely engaging relation and a flexible tube positioned concentrically therein; a source of high pressure water connected to one end of said flexible tube and a dischaerge nozzle mounted in and extending from the other end of said flexible tube; an auger having an outer diameter greater than that of said cleaning member connected to and extending from the end of said spring in surrounding relation to said nozzle; said nozzle having at least two diverging discharge outlets whereby a divergent stream of said high pressure water is discharged directed towards the peripheral portion of said auger; and means for rotating and advancing said cleaning member into the pipe to be cleaned.
Claim 3
Dependent Claim
25 words
A pipe cleaning apparatus according to claim 1, wherein said auger comprises a coiled element having convolutions of decreasing diameter at the free end thereof.
Claim 4
Dependent Claim
55 words
A pipe cleaning apparatus according to claim 1, wherein said means for rotating and advancing said cleaning member includes a rotatable casing having a spiral opening adapted to store a section of said coil spring and to discharge same at the rate of one pitch length of coil spring for each revolution of said casing.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |