US3816176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning strainers
Assignee: Celleco AB
•
Filing: 1973-03-21
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Granted: 1974-06-11
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Expires: 1993-03-21
Abstract
Abstract The cleaning is effected by spraying water or other fluid upon one side of the strainer while positioning a reflecting surface closely adjacent the other side, whereby the spray passing through the strainer strikes this surface.
Inventors
- 👤 L Rundqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:07
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B01; B01D; B01D29/00; B01D29/01; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D33/00; B01D33/04; B01D35/00; B01D35/22; B01D35/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
In combination with a strainer, such as a wire gauze or a perforated foil, a strainer cleaning apparatus comprising means for spraying a fluid upon one side of the strainer, and a device located at the other side of the strainer and having a surface lying against said other side of the strainer for surface to surface contact during said spraying, whereby fluid sprayed through the strainer strikes said device surface.
Claim 2
Dependent Claim
37 words
The combination of claim 2, in which the strainer is wire gauze mounted for movement in an endless path, said device being a rotating roller arranged with its axis perpendicular to the direction of said gauze movement.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |