US5230388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning a bore hole using a rotary pump
Assignee: Cherrington Corp
•
Filing: 1991-11-08
•
Granted: 1993-07-27
•
Expires: 2011-11-08
Abstract
Abstract An apparatus for removing debris from a bore hole comprises a housing having apertures formed therein such that rotation of the housing causing entrapment of the cuttings from the bore hole. The positive displacement pump comprises a rotor surrounded by a stator coupled to the housing such that rotation of the stator rotates the housing. The positive displacement pump is operable to pump material from the housing responsive to relative movement between the rotor and stator. A motor rotates the stator, thereby cleaning the bore hole.
Inventors
- 👤 Martin D. Cherrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:36
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/28; E21B12/00; E21B12/06; E21B21/00; E21B37/00; E21B37/02; E21B37/04; E21B4/00; E21B4/02
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
83 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a reamer coupled to said stator; and a motor for rotating said stator.
Claim 2
Dependent Claim
83 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a reamer coupled to said stator; and a motor for rotating said stator.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein said positive displacement pump comprises a Moyno pump.
Claim 4
Dependent Claim
14 words
The apparatus of claim 2 and further comprising means for holding said rotor stationary.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 and further comprising means for rotating said rotor opposite to the direction of rotation of said stator.
Claim 6
Dependent Claim
16 words
The apparatus of claim 1 and further comprising cleaning apparatus for removing debris from said apertures.
Claim 7
Dependent Claim
29 words
The apparatus of claim 5 wherein said cleaning apparatus comprises a roller coupled to and disposed within said housing, said roller including extruding members for mating with said apertures.
Claim 8
Dependent Claim
23 words
The apparatus of claim 6 wherein said cleaning apparatus further comprises a scraper coupled to said housing for scraping debris from the apertures.
Claim 9
Dependent Claim
22 words
The apparatus of claim 5 wherein said cleaning apparatus comprises a scraper coupled to said housing for scraping debris from the apertures.
Claim 10
Dependent Claim
23 words
The apparatus of claim 1 and further comprising a plurality of stabilizers coupled to said reamer for stabilizing the reamer within the hole.
Claim 11
Independent Claim
81 words
A method for removing debris from a hole comprising the steps of: rotating the stator of a positive displacement pump relative to a rotor to create a suction; rotating a reamer in conjunction with rotating said stator; rotating a housing having apertures formed therein responsive to the rotation of the stator, rotation of the housing transferring the debris from the hole to the interior of the housing; pumping the debris from the interior of the housing through the positive displacement pump.
Claim 12
Independent Claim
81 words
A method for removing debris from a hole comprising the steps of: rotating the stator of a positive displacement pump relative to a rotor to create a suction; rotating a reamer in conjunction with rotating said stator; rotating a housing having apertures formed therein responsive to the rotation of the stator, rotation of the housing transferring the debris from the hole to the interior of the housing; pumping the debris from the interior of the housing through the positive displacement pump.
Claim 13
Dependent Claim
28 words
The method of claim 10 wherein said step of rotating the stator of a positive displacement pump comprises the step of rotating the stator of a Moyno pump.
Claim 14
Dependent Claim
23 words
The method of claim 10 and further comprising the step of rotating the rotor opposite to the direction of rotation of said stator.
Claim 15
Dependent Claim
15 words
The method of claim 10 and further comprising the step of holding the rotor stationary.
Claim 16
Dependent Claim
16 words
The method of claim 10 and further comprising the step of removing debris from said apertures.
Claim 17
Dependent Claim
35 words
The method of claim 14 wherein said step of removing debris from the apertures comprises the step of rolling a cylinder including extruding members for mating with said apertures about the interior of the housing.
Claim 18
Dependent Claim
34 words
The method of claim 15 wherein said step of removing debris from the apertures further comprises the step of scraping debris from the apertures with a scraper coupled to the exterior of said housing.
Claim 19
Dependent Claim
33 words
The method of claim 14 wherein said step of removing debris from the apertures comprises the step of scraping debris from the apertures with a scraper coupled to the exterior of said housing.
Claim 20
Dependent Claim
17 words
The method of claim 10 and further comprising the step of stabilizing the reamers within the hole.
Claim 21
Dependent Claim
85 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a motor for rotating said stator; and cleaning apparatus for removing debris from said apertures.
Claim 22
Dependent Claim
85 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a motor for rotating said stator; and cleaning apparatus for removing debris from said apertures.
Claim 23
Dependent Claim
29 words
The apparatus for claim 19 wherein said cleaning apparatus comprises a roller coupled to and disposed within said housing, said roller including extruding members for mating with said apertures.
Claim 24
Dependent Claim
23 words
The apparatus of claim 20 wherein said cleaning apparatus further comprises a scraper coupled to said housing for scraping debris from the apertures.
Claim 25
Dependent Claim
22 words
The apparatus of claim 19 wherein said cleaning apparatus comprises a scraper coupled to said housing for scraping debris from the apertures.
Claim 26
Independent Claim
85 words
A method for removing debris from a hole comprising the steps of: rotating a stator of a positive displacement pump relative to a rotor to create a suction; rotating a housing having apertures formed therein responsive to the rotation of said stator, rotation of the housing transferring the debris from the hole to the interior of the housing; forcing debris lodged in said apertures to the exterior of the housing; and pumping the debris from the interior of the housing through the positive displacement pump.
Claim 27
Independent Claim
85 words
A method for removing debris from a hole comprising the steps of: rotating a stator of a positive displacement pump relative to a rotor to create a suction; rotating a housing having apertures formed therein responsive to the rotation of said stator, rotation of the housing transferring the debris from the hole to the interior of the housing; forcing debris lodged in said apertures to the exterior of the housing; and pumping the debris from the interior of the housing through the positive displacement pump.
Claim 28
Dependent Claim
35 words
The method of claim 23 wherein said step of forcing debris from the apertures comprises the step of rolling a cylinder including extruding members for mating with said apertures about the interior of the housing.
Claim 29
Dependent Claim
34 words
The method of claim 24 wherein said step of removing debris from the apertures further comprises the step of scraping debris from the apertures with a scraper coupled to the exterior of said housing.
Claim 30
Dependent Claim
33 words
The method of claim 23 wherein said step of removing debris from the apertures comprises the step of scraping debris from the apertures with a scraper coupled to the exterior of said housing.
Claim 31
Dependent Claim
91 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a motor for rotating said stator; and means for rotating said rotor opposite to the direction of rotation of said stator.
Claim 32
Dependent Claim
91 words
Apparatus for removing debris from a hole comprising: a housing having apertures formed therein such that rotation thereof causes entrapment of debris from the hole; a positive displacement pump comprising a rotor surrounded by a stator coupled to said housing such that rotation of said stator causes rotation of said housing, said positive displacement pump for pumping material from said housing responsive to relative movement between the rotor and stator; a motor for rotating said stator; and means for rotating said rotor opposite to the direction of rotation of said stator.
Claim 33
Independent Claim
80 words
A method for removing debris from a hole comprising the steps of: rotating a stator of a positive displacement pump and a rotor of said positive displacement pump in opposite directions to create a suction; rotating a housing having apertures formed therein responsive to the rotation of the stator, rotation of the housing transferring the debris from the hole to the interior of the housing; and pumping the debris from the interior of the housing through the positive displacement pump.
Claim 34
Independent Claim
80 words
A method for removing debris from a hole comprising the steps of: rotating a stator of a positive displacement pump and a rotor of said positive displacement pump in opposite directions to create a suction; rotating a housing having apertures formed therein responsive to the rotation of the stator, rotation of the housing transferring the debris from the hole to the interior of the housing; and pumping the debris from the interior of the housing through the positive displacement pump.
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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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |