US3785750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wellpoint system
Assignee: Individual
•
Filing: 1972-09-28
•
Granted: 1974-01-15
•
Expires: 1992-09-28
Abstract
Abstract A wellpoint system for removing fluid from the earth is disclosed comprising a motor driven centrifugal pump having a pump chamber divided into a suction chamber and a discharge chamber by a bulkhead. A discharge pipe extends from the discharge side of the pump through the suction chamber and into the discharge chamber. A venturi is provided in the discharge pipe in communication with the suction chamber so that a suction is created in the suction chamber as fluid passes through the discharge pipe into the discharge chamber. A plug valve is mounted in the bulkhead and is controlled by a float positioned in the suction chamber so that the lowering of the float will open the plug valve. A suction line extends from the wellpoint header system and is in communication with the suction chamber. A normally closed flap valve is provided on the suction line within the suction chamber to permit the pump chamber to be initially filled.
Inventors
- 👤 C Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/04; F04D9/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
188 words
A wellpoint system comprising, a pump means having an intake side and a discharge side, a power means connected to said pump means for operating said pump means, a first housing defining a discharge compartment, a second housing defining an intake compartment, said intake side of said pump means being in fluid communication with said intake compartment, a discharge pipe means in fluid communication with said discharge side of said pump means, said discharge pipe means extending through said intake compartment into said discharge compartment, a venturi formed in said discharge pipe means in said intake compartment and being in communication therewith to create a vacuum in said intake compartment as fluid passes therethrough into said discharge compartment, a plurality of wellpoints, a collector pipe means in fluid communication with said wellpoints and in fluid communication with said intake compartment, said intake and discharge compartments having a fluid passageway means extending therebetween, a valve means in said fluid passageway for opening and closing said fluid passageway means, and fluid level sensing means in said intake compartment connected to said valve means for opening and closing said valve means.
Claim 2
Dependent Claim
188 words
A wellpoint system comprising, a pump means having an intake side and a discharge side, a power means connected to said pump means for operating said pump means, a first housing defining a discharge compartment, a second housing defining an intake compartment, said intake side of said pump means being in fluid communication with said intake compartment, a discharge pipe means in fluid communication with said discharge side of said pump means, said discharge pipe means extending through said intake compartment into said discharge compartment, a venturi formed in said discharge pipe means in said intake compartment and being in communication therewith to create a vacuum in said intake compartment as fluid passes therethrough into said discharge compartment, a plurality of wellpoints, a collector pipe means in fluid communication with said wellpoints and in fluid communication with said intake compartment, said intake and discharge compartments having a fluid passageway means extending therebetween, a valve means in said fluid passageway for opening and closing said fluid passageway means, and fluid level sensing means in said intake compartment connected to said valve means for opening and closing said valve means.
Claim 3
Dependent Claim
16 words
The wellpoint system of claim 1 wherein said fluid level sensing means comprises a float means.
Claim 4
Dependent Claim
27 words
The wellpoint system of claim 2 wherein said intake compartment has upper and lower ends, said venturi being positioned in the upper end of said intake compartment.
Claim 5
Dependent Claim
14 words
The wellpoint system of claim 2 wherein said pump means is a centrifugal pump.
Claim 6
Dependent Claim
21 words
The wellpoint system of claim 2 wherein a closable fill opening is provided at the upper end of said discharge compartment.
Claim 7
Dependent Claim
26 words
The wellpoint system of claim 2 wherein a normally closed valve means is mounted on the end of said collector pipe means in said intake compartment.
Claim 8
Dependent Claim
16 words
The wellpoint system of claim 6 wherein said normally closed valve means comprises a flap valve.
Claim 9
Dependent Claim
24 words
The wellpoint system of claim 2 wherein said first and second housings are positioned adjacent each other and have a bulkhead means positioned therebetween.
Claim 10
Dependent Claim
17 words
The wellpoint system of claim 8 wherein said fluid passageway means is formed in said bulkhead means.
Claim 11
Dependent Claim
57 words
The wellpoint system of claim 9 wherein said float means is responsive to changes in fluid levels in said intake compartment to open said valve means when the fluid level in said intake compartment lowers to a predetermined level and closes said valve means when the fluid level in said intake compartment rises to a predetermined level.
Claim 12
Dependent Claim
14 words
The wellpoint system of claim 9 wherein said valve means comprises a plug valve.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |