US4025121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure injection hydraulic transport system with a peristaltic pump conveyor
Assignee: United States Department of the Interior
•
Filing: 1976-02-26
•
Granted: 1977-05-24
•
Expires: 1996-02-26
Abstract
Abstract A high-pressure injection hydraulic transport system for conveying solids comprises a pressurizable hopper, a peristaltic pump conveyor, multiple air domes, and means for injecting air into the pumped slurry, such that a "beachcomber" effect is produced in the slurry to maintain the solids in suspension. The peristaltic pumping sequence provides at least two open pumps between a non-adjacent pumping pump and closed pump.
Inventors
- 👤 William K. Kleysteuber
- 👤 Ernest H. Bean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
B; B65; B65G; B65G35/00; B65G35/005; B65G53/00; B65G53/30; B65G53/34; B65G53/40; B65G53/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
76 words
A high-pressure injection, hydraulic transport system for conveying fluidized solids comprising a pressure hopper for receiving the solids, means for pressurizing said hopper with a liquid pressurizing medium, said liquid pressurizing medium producing a slurry when mixed with the solids, a peristaltic pump conveyor for transporting said slurry, and means for diluting said slurry pumped by said peristaltic pump conveyor to a predetermined volume of concentration of the solids and for further transporting said diluted slurry.
Claim 2
Dependent Claim
76 words
A high-pressure injection, hydraulic transport system for conveying fluidized solids comprising a pressure hopper for receiving the solids, means for pressurizing said hopper with a liquid pressurizing medium, said liquid pressurizing medium producing a slurry when mixed with the solids, a peristaltic pump conveyor for transporting said slurry, and means for diluting said slurry pumped by said peristaltic pump conveyor to a predetermined volume of concentration of the solids and for further transporting said diluted slurry.
Claim 3
Dependent Claim
26 words
The pumping system as claimed in claim 1 and further comprising means for agitating the solids in said pressurizing hopper prior to pressurization of said hopper.
Claim 4
Dependent Claim
26 words
The pumping system as claimed in claim 2 wherein said agitating means comprises fluid jets and said diluting and transporting means comprises a jet pump mixer.
Claim 5
Dependent Claim
141 words
The pumping system as claimed in claim 1 wherein said peristaltic pump conveyor comprises a plurality of peristaltic pumps connected together end to end, each of said peristaltic pumps comprising a pressure chamber having disposed therein a pair of spaced, flexible chamber liners, means for connecting the ends of said chamber liners with the corresponding ends of said pressure chamber, means for connecting the lateral edges of said chamber liners together such that a pressure-tight, normally open passageway through said pressure chamber is defined by said chamber liners; means for pressurizing and means for venting each of said pressure chambers in a predetermined sequence, such that a peristaltic-type pumping action is produced by the alternate expansion of said chamber liners under pressure to constrict said passageways and relaxation of said chamber liners to return said passageways to their normally open state.
References Cited (Backward Citations)
US2291912A
Cited
US3389938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |