US3843062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Individual
•
Filing: 1972-12-12
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Granted: 1974-10-22
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Expires: 1992-12-12
Abstract
Abstract A combined pumping and filtering mechanism for viscous liquids containing solids comprises a housing defined by surface of revolution and provided with a rotatable inclined plate impeller having at least one marginally positioned shoe to sweep along a portion of the inner peripheral surface of the housing.
Inventors
- 👤 G Neidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:27
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092; B01; B01D; B01D21/00; B01D21/0012; B01D21/26; B01D21/262; B01D29/00; B01D29/01; B01D29/03; B01D29/035; B01D29/11; B01D29/31; B01D29/35; B01D29/50; B01D29/52; B01D29/54; B01D29/76; B01D29/86; B01D29/88; B01D29/94; B01D29/945; B01D3/00; B01D3/14; B01D3/26; B01D35/00; B01D35/26; B07; B07B; B07B1/00; F; F04; F04D; F04D11/00; F04D11/005; B07B2230/00; B07B2230/01
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A pump and strainer assembly comprising a stationary pump housing formed by walls defining a pump chamber therein, an impeller rotating in said housing, a drive shaft for said impeller extending axially into said pump housing, said impeller being secured to said shaft for rotation in planes inclined to said shaft, a shell enclosing at least part of said pump housing said shell forming with the walls of said enclosed pump housing a separate chamber, strainer passages connecting said pump chamber and said separate chamber, an inlet for said pump chamber, and individual outlets each for said pump chamber and said separate chamber, said housing being conical and the inclined impeller being equipped at both ends with shoes sweeping along said conical inner periphery of the housing.
Claim 2
Dependent Claim
127 words
A pump and strainer assembly comprising a stationary pump housing formed by walls defining a pump chamber therein, an impeller rotating in said housing, a drive shaft for said impeller extending axially into said pump housing, said impeller being secured to said shaft for rotation in planes inclined to said shaft, a shell enclosing at least part of said pump housing said shell forming with the walls of said enclosed pump housing a separate chamber, strainer passages connecting said pump chamber and said separate chamber, an inlet for said pump chamber, and individual outlets each for said pump chamber and said separate chamber, said housing being conical and the inclined impeller being equipped at both ends with shoes sweeping along said conical inner periphery of the housing.
Claim 3
Dependent Claim
17 words
An assembly as claimed in claim 1 wherein said shoes are dimensioned to produce adjoining sweeping ranges.
Claim 4
Dependent Claim
14 words
An assembly as claimed in claim 2 wherein said shoes form a closed ring.
Claim 5
Dependent Claim
29 words
An assembly consisting of two units as claimed in claim 1, said units being assembled as mirror images, the impellers of said units being mounted on a common shaft.
Claim 6
Dependent Claim
15 words
An assembly as claimed in claim 1 comprising an auxiliary pump in said pipe connection.
Claim 7
Dependent Claim
114 words
A pump and strainer assembly comprising a stationary pump housing formed by walls defining a pump chamber therein, an impeller rotating in said housing, a drive shaft for said impeller extending axially into said pump housing, said impeller being secured to said shaft for rotation in planes inclined to said shaft, a shell enclosing at least part of said pump housing said shell forming with the walls of said enclosed pump housing a separate chamber, strainer passages connecting said pump chamber and said separate chamber, an inlet for said pump chamber, and individual outlets each for said pump chamber and said separate chamber, said pump housing having substantially the form of a hollow sphere.
Claim 8
Dependent Claim
114 words
A pump and strainer assembly comprising a stationary pump housing formed by walls defining a pump chamber therein, an impeller rotating in said housing, a drive shaft for said impeller extending axially into said pump housing, said impeller being secured to said shaft for rotation in planes inclined to said shaft, a shell enclosing at least part of said pump housing said shell forming with the walls of said enclosed pump housing a separate chamber, strainer passages connecting said pump chamber and said separate chamber, an inlet for said pump chamber, and individual outlets each for said pump chamber and said separate chamber, said pump housing having substantially the form of a hollow sphere.
Claim 9
Dependent Claim
25 words
An assembly as claimed in claim 6 wherein said housing, in a section perpendicular to said shaft, is spirally enlarged in direction towards the outlet.
Claim 10
Dependent Claim
37 words
An assembly as claimed in claim 1 comprising tooth means at said impeller and grooves in the walls of said pump housing receiving said tooth means, at least some of said strainer passages opening into said grooves.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |