US5660725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gully emptier having filter provided pipe and weight compensating spring
Assignee: Individual
•
Filing: 1993-12-10
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Granted: 1997-08-26
•
Expires: 2013-12-10
Abstract
Abstract The present invention relates to a gully emptier comprising a container which has connected thereto a water jet or vacuum/pressure pump for conveying slurry and in which a discharge pipe which is provided with a filter at a liftable and lowerable end is arranged upstream of the connection to the suction side of a low-pressure pump, wherein a float is connected to the filter. Thanks to the float which floats on the water surface, the filter is automatically held at a predetermined depth below the water surface even when the water level changes. A manual adjustment by the operating staff is no longer required. The distance of the filter from the water surface can be accurately adjusted by using a floodable or inflatable float.
Inventors
- 👤 Georg Klass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:13
CPC Classifications
E; E03; E03F; E03F7/00; E03F7/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
76 words
A gully emptier comprising a tank (1) and in which a discharge pipe is provided with a filter (26) at a liftable and lowerable end thereof and is connected to a float (31) upstream of a connection to the suction side of a low-pressure pump (42), characterized in that at least one spring (19, 20) is connected to said discharge pipe which is arranged with a bias partly compensating for the weight of said discharge pipe.
Claim 2
Dependent Claim
76 words
A gully emptier comprising a tank (1) and in which a discharge pipe is provided with a filter (26) at a liftable and lowerable end thereof and is connected to a float (31) upstream of a connection to the suction side of a low-pressure pump (42), characterized in that at least one spring (19, 20) is connected to said discharge pipe which is arranged with a bias partly compensating for the weight of said discharge pipe.
Claim 3
Dependent Claim
53 words
A gully emptier according to claim 1, characterized in that said filter (26) and said float (31) are each secured to first (15) and second (16) support arms, are mounted on said tank to pivot with a first end of said support arms about an axis (12) and are arranged side by side.
Claim 4
Dependent Claim
54 words
A gully emptier according to claim 2, characterized in that said float (31) and said filter (26) are secured to said support arms (15, 16) in such a manner that said filter (26) is below the water surface at a predetermined depth in the tank when said float (31) floats on said water surface.
Claim 5
Dependent Claim
36 words
A gully emptier according to claim 3, characterized in that said support arms (15, 16) form a bend which is shaped such that said filter (26) is situated substantially in a position below said float (31).
Claim 6
Dependent Claim
34 words
A gully emptier according to any one of claims 2 to 4, characterized in that at least one of said support arms (16) is hollow and serves as a part of the discharge pipe.
Claim 7
Dependent Claim
23 words
A gully emptier accord to any one of claims 1 to 4, characterized in that said float (31) is a rigid hollow body.
Claim 8
Dependent Claim
29 words
A gully emptier according to claim 6, characterized in that said hollow body has a connection (34) which is connected to a line (35) extended out of said tank.
Claim 9
Dependent Claim
58 words
A gully emptier according to any one of claims 2 to 4, characterized in that said at least one spring comprises two spiral springs (19, 20) that are held on said tank between fastening means (17, 18) on said support arms (15, 16) and fastening means situated above said axis (12) at an end of said support arms.
Claim 10
Dependent Claim
24 words
A gully emptier according to any one of claims 1 to 4, characterized in that said at least one spring comprises a torsion-loaded spring.
Claim 11
Dependent Claim
54 words
A gully emptier according to any one of claims 1 to 4, characterized in that said filter (26) consists of a rotating cage drum of rods extending in parallel with a rotation axis (27) of said drum, and that rings for docter blade supports are provided at both of face ends of said drum.
Claim 12
Dependent Claim
20 words
A gully emptier according to claim 10, characterized in that a stripper (25) is provided on said rotating cage drum.
Claim 13
Dependent Claim
32 words
A gully emptier according to any one of claims 1 to 4, characterized in that a stop is provided for defining a movement of said discharge pipe in a lower end position.
Claim 14
Dependent Claim
73 words
A gully emptier comprising: a tank; a pump; a discharge pipe connected to said pump, said discharge pipe, being within said tank, being free to move up and down at one end thereof; a float attached to said discharge pipe; a filter placed on said discharge pipe; and a spring connected to said discharge pipe, wherein said discharge pipe is arranged with a bias partially compensating for the weight of said discharge pipe.
Claim 15
Dependent Claim
73 words
A gully emptier comprising: a tank; a pump; a discharge pipe connected to said pump, said discharge pipe, being within said tank, being free to move up and down at one end thereof; a float attached to said discharge pipe; a filter placed on said discharge pipe; and a spring connected to said discharge pipe, wherein said discharge pipe is arranged with a bias partially compensating for the weight of said discharge pipe.
Claim 16
Dependent Claim
37 words
A gully emptier as in claim 13 further comprising: first and second support arms secured to said filter and said float, said first and second support arms together mounted at one end to pivot about an axis.
Claim 17
Dependent Claim
49 words
A gully emptier as in claim 14 wherein: said float and said filter are secured to said first and second support arms in such a manner that said filter is below a water surface at a predetermined depth in the tank when said float floats on the water surface.
Claim 18
Dependent Claim
33 words
A gully emptier as in claim 15 wherein: said first and second support arms form a bend which is shaped such that said filter is situated substantially in a position below said float.
Claim 19
Dependent Claim
29 words
A gully emptier as in claim 14 wherein: at least one of said first and second support arms is hollow and serves as a part of said discharge pipe.
Claim 20
Dependent Claim
31 words
A gully emptier as in claim 14 further comprising: stop means, associated with one of said first or second support arms, for stopping said discharge pipe at a lower end position.
Claim 21
Dependent Claim
15 words
A gully emptier as in claim 13 wherein: said float is a rigid hollow body.
Claim 22
Dependent Claim
15 words
A gully emptier as in claim 13 wherein: said filter comprises a rotating cage drum.
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) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |