Patent US4787826A successfully refreshed from Google Patents.
US4787826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump, particularly for highly viscous materials
Assignee: Karl Schnell GmbH and Co KG
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Filing: 1987-05-22
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Granted: 1988-11-29
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Expires: 2007-05-22
Abstract
Abstract A pump, particularly, for pasteous masses, includes a rotatable outer wheel provided with a plurality of inner teeth, a pinion rotatable inside the outer wheel eccentrically thereto and having a plurality of outer teeth, the outer wheel and the pinion forming an intermediate space therebetween, a pressure seqment located in the intermediate space between the outer wheel and the pinion, an inlet and an outlet which are offset relative one another in direction of rotation, and a filling device connected with the inlet, the filling device including a filling container and a feeding element arranged in the filling container and having a feeding direction so as to feed a mass toward the inlet.
Inventors
- 👤 Karl Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:08
CPC Classifications
F; F04; F04C; F04C13/00; F04C13/001; F04C13/002; A; A22; A22C; A22C11/00; A22C11/02; A22C11/08; F04C2/00; F04C2/08; F04C2/10; F04C2/101; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
189 words
A pump, particularly for pasteous masses, comprising a rotatable outer wheel provided with a plurality of inner teeth; a pinion rotatable inside the outer wheel eccentrically thereto and having a plurality of outer teeth engaging with said inner teeth, said outer wheel and said pinion forming an intermediate space therebetween; a pressure segment located in said intermediate space between said outer wheel and said pinion; and a rotatable drive shaft; filling means connected with said inlet, said filling means including a filling container having a conical container end associated with said inlet, movable feeding means including a worm gear attached to the drive shaft and arranged in said filling container and having a feeding direction so as to feed a mass toward said inlet; a guiding bush surrounding the rotatable drive shaft and fixed in position relative to the filling container and protruding into the filling container; and an immovable stopper attached to the guiding bush and extending in a radial direction from said guide bush arranged in said conical container end for preventing entraining of a mass to be filled, in the region of said conical container end.
Claim 2
Dependent Claim
189 words
A pump, particularly for pasteous masses, comprising a rotatable outer wheel provided with a plurality of inner teeth; a pinion rotatable inside the outer wheel eccentrically thereto and having a plurality of outer teeth engaging with said inner teeth, said outer wheel and said pinion forming an intermediate space therebetween; a pressure segment located in said intermediate space between said outer wheel and said pinion; and a rotatable drive shaft; filling means connected with said inlet, said filling means including a filling container having a conical container end associated with said inlet, movable feeding means including a worm gear attached to the drive shaft and arranged in said filling container and having a feeding direction so as to feed a mass toward said inlet; a guiding bush surrounding the rotatable drive shaft and fixed in position relative to the filling container and protruding into the filling container; and an immovable stopper attached to the guiding bush and extending in a radial direction from said guide bush arranged in said conical container end for preventing entraining of a mass to be filled, in the region of said conical container end.
Claim 3
Dependent Claim
38 words
A pump as defined in claim 1, and further comprising a pump housing, said outer wheel being rotatably supported on said pump housing and driven in rotation; and further comprising means for driving said outer wheel in rotation.
Claim 4
Dependent Claim
27 words
A pump as defined in claim 1, wherein said pressing segment which is located in said intermediate space between said outer wheel and said pinion is wedge-shaped.
Claim 5
Dependent Claim
33 words
A pump as defined in claim 1, wherein said container has a predetermined contour, said feeding means having a drivable feeding element with a movement region corresponding to the contour of said container.
Claim 6
Dependent Claim
41 words
A pump as defined in claim 4, wherein said container has a container part which is associated with said feeding element and has said predetermined contour, said movement region of said feeding element corresponding to said contour of said container part.
Claim 7
Dependent Claim
17 words
A pump as defined in claim 4, wherein said feeding element is formed as a driveable worm-gear.
Claim 8
Dependent Claim
32 words
A pump as defined in claim 1, wherein said container is rotation-symmetrical, said feeding means having a drivable feeding element provided with a driving shaft which is arranged centrally in said container.
Claim 9
Dependent Claim
21 words
A pump as defined in claim 7; and further comprising a pump housing on which said outer wheel is rotatably supported.
Claim 10
Dependent Claim
22 words
A pump as defined in claim 8, wherein said container end associated with said pump housing is formed as a truncated cone.
Claim 11
Dependent Claim
28 words
A pump as defined in claim 1, wherein said feeding means has a feeding element which is formed as a band-shaped worm-gear in form of a conical spiral.
Claim 12
Dependent Claim
28 words
A pump as defined in claim 10 wherein said conical spiral has an upper spiral end; said stopper extending into said upper spiral end with a small play.
Claim 13
Dependent Claim
27 words
A pump as defined in claim 11, wherein said stopper includes at least one stopper element which extends in an operative position from above into said worm-gear.
Claim 14
Dependent Claim
27 words
A pump as defined in claim 11, wherein said stopper includes at least two stopper elements which have free leg ends extending from above into said worm-gear.
Claim 15
Dependent Claim
16 words
A pump as defined in claim 13, wherein said stopper elements are formed as arcuate elements.
Claim 16
Dependent Claim
16 words
A pump as defined in claim 13, wherein said stopper elements are formed as C-shaped elements.
Claim 17
Dependent Claim
39 words
A pump as defined in claim 13 and further comprising a driving shaft for driving said worm-gear; and a guiding bush mounted on said driving shaft, said free leg ends of said stopper elements extending toward said driving shaft.
Claim 18
Dependent Claim
37 words
A pump as defined in claim 1, wherein said container has a container rim; and further comprising a drive for driving said feeding means; and a holder provided for said drive and arranged on said container rim.
Claim 19
Dependent Claim
22 words
A pump as defined in claim 17, wherein said holder is formed as a free-arm bearing flange arranged on said container rim.
Claim 20
Dependent Claim
22 words
A pump as defined in claim 17, wherein said drive for said feeding means includes an electric motor and a transmission therefor
Claim 21
Dependent Claim
60 words
A pump as defined in claim 1; and further comprising a housing having an upper housing wall, said inlet being formed as an inlet opening provided in said housing wall; and a supporting plate for said filling container arranged in an operative position of said pump above said housing and provided with a cutout which corresponds to said inlet opening.
Claim 22
Dependent Claim
18 words
A pump as defined in claim 20, wherein said upper housing wall is formed as a flat plate.
Claim 23
Dependent Claim
68 words
A pump as defined in claim 20, wherein said supporting plate extends in a predetermined plane and has a lateral projection with a bearing element, said feeding means having a driving shaft; and further comprising a bearing sleeve which surrounds said bearing element and has a geometrical axis which extends parallel to said driving shaft of said feeding means and perpendicular to said plane of said supporting plate.
Claim 24
Dependent Claim
24 words
A pump as defined in claim 22, wherein said bearing element is formed as a bearing pin which is fixedly attached to said housing.
Claim 25
Dependent Claim
27 words
A pump as defined in claim 20; and further comprising means for connecting said supporting plate with said housing and including at least one fastener, a transmission.
Claim 26
Dependent Claim
32 words
A pump as defined in claim 20; and further comprising means for connecting said supporting plate with said housing and including three fasteners which are offset relative to one another by 90°.
Claim 27
Dependent Claim
25 words
A pump as defined in claim 21; and further comprising at least one substantially radially projecting handle for turning said container relative to said housing.
Claim 28
Dependent Claim
30 words
A pump as defined in claim 21; and further comprising a pressing device for insignficant lifting said container relative to said housing in a condition when said fastener is released.
Claim 29
Dependent Claim
30 words
A pump as defined in claim 20, wherein said supporting plate has a bearing pin; and further comprising spring means arranged under said bearing pin and tensioned by said fastener.
Claim 30
Dependent Claim
16 words
A pump as defined in claim 28, wherein said spring means is formed as a spring.
Claim 31
Dependent Claim
17 words
A pump as defined in claim 28, wherein said spring means is formed as a spring set.
Claim 32
Dependent Claim
40 words
A pump as defined in claim 1; and further comprising a housing having a wall; and a bearing pin connected with said housing wall, said pinion which is driven by said outer wheel being rotatably arranged on said bearing pin.
Claim 33
Dependent Claim
44 words
A pump as defined in claim 1; and further comprising a housing which has a tubular housing wall with a pocket, said outlet being formed as a radial outlet opening in said housing, said pocket merging into said radial outlet opening of said housing.
Claim 34
Dependent Claim
21 words
A pump as defined in claim 32; and further comprising an outlet pipe connected with said outlet opening of said housing.
Claim 35
Dependent Claim
40 words
A pump as defined in claim 32, wherein said pressure segment has a front end as considered in direction of rotation of said outer wheel, said pocket being located in the region of said front end of said pressure segment.
References Cited (Backward Citations)
US1654975A
Cited
US1927799A
Cited
US2042641A
Cited
US2055587A
Cited
US2378998A
Cited
US2705835A
Cited
US3059862A
Cited
US3041979A
Cited
US3559240A
Cited
US3708249A
Cited
US4558985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |