US5122038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density grout pump
Assignee: Vale Canada Ltd
•
Filing: 1991-02-08
•
Granted: 1992-06-16
•
Expires: 2011-02-08
Abstract
Abstract A pump capable of shear mixing and supplying high density grout over long distances and through relatively narrow conduits. The pump includes a hopper, a series of agitators in the hopper and a coincident auger and rotor/stator disposed below the hopper. The pump is held together by a pair of side bars having quick release bear clamp clasps for expeditious disassembly.
Inventors
- 👤 Michael L. Malkoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:17
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/21; B01F27/2123; B28; B28C; B28C5/00; B28C5/08; B28C5/0862; B01F27/05; B01F27/11; B01F27/19; B01F27/192; B01F27/60; B01F27/62; B01F27/70; B01F27/80; B01F27/90; B01F35/00; B01F35/165; B01F35/56; B01F35/71; B01F35/717; B01F35/71775; B01F35/75; B01F35/754; B01F35/75455; B01F35/754551; B28C5/10; B28C5/12; B28C5/1238; B28C5/1276; B28C5/16; F; F04; F04C; F04C11/00; F04C11/005; F04C13/00; F04C13/001; F04C13/002; F04D; F04D13/00; F04D13/12; F04D29/00; F04D29/60; F04D29/64; F04D29/648; F04D3/00; F04D3/02; F04D7/00; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
A high density grout pump comprising a container, a rotatable container shaft extending into the container, the container including a hopper and a cone, a plurality of agitating means affixed to the shaft within the container, the container attached to an auger tube, a rotatable auger disposed within the auger tube, the auger including spiral threads and a plurality of shear blades, a rotor and a stator disposed within a stator housing, the stator housing affixed downstream of the auger tube to comprise therewith a lower pump housing, the auger and rotor coincident with a longitudinal axis extending therethrough, a plurality of removable apertured plates extending substantially perpendicular to the longitudinal axis, a first apertured plate and second apertured plate being disposed at opposite ends of the lower pump housing, an outlet affixed to the stator housing, and releasable clasp means for maintaining the auger, rotor and stator intact, the clasp means including a pair of side bars extending parallel with the auger tube and the stator housing, the side bars including notches disposed at opposing ends, and tabs on the first and second apertured plates extending through the notches in the side bars.
Claim 2
Dependent Claim
194 words
A high density grout pump comprising a container, a rotatable container shaft extending into the container, the container including a hopper and a cone, a plurality of agitating means affixed to the shaft within the container, the container attached to an auger tube, a rotatable auger disposed within the auger tube, the auger including spiral threads and a plurality of shear blades, a rotor and a stator disposed within a stator housing, the stator housing affixed downstream of the auger tube to comprise therewith a lower pump housing, the auger and rotor coincident with a longitudinal axis extending therethrough, a plurality of removable apertured plates extending substantially perpendicular to the longitudinal axis, a first apertured plate and second apertured plate being disposed at opposite ends of the lower pump housing, an outlet affixed to the stator housing, and releasable clasp means for maintaining the auger, rotor and stator intact, the clasp means including a pair of side bars extending parallel with the auger tube and the stator housing, the side bars including notches disposed at opposing ends, and tabs on the first and second apertured plates extending through the notches in the side bars.
Claim 3
Dependent Claim
29 words
The pump according to claim 1 wherein a pivotal clasp is mounted on the side bar, the clasp including a box removably enveloping a tab extending from a plate.
Claim 4
Dependent Claim
26 words
The pump according to claim 1 wherein the interior of the cone and the interior of the auger tube are lined with a continuous elastic coating.
Claim 5
Dependent Claim
31 words
The pump according to claim 1 wherein the auger is coupled to a driving means by a square coupling and the rotor is coupled to the auger by a square coupling.
Claim 6
Dependent Claim
35 words
The pump according to claim 1 wherein an outer open quadrilateral paddle and an inner open quadrilateral paddle are affixed to the shaft, and the outer and inner paddles are oriented 90° from one another.
Claim 7
Dependent Claim
20 words
The pump according to claim 5 wherein a plurality of container shear blades are spirally disposed about the container shaft.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |