US4865495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid inducer
Assignee: Energy Exchanger Co
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Filing: 1988-07-28
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Granted: 1989-09-12
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Expires: 2008-07-28
Abstract
Abstract A fluid inducer for mounting to an oil-hole drill sleeve includes at least two removable sections for easy replacement of internal O-rings without the need for removal of the drill sleeve or drill bit from the drilling machine. The inducer includes a cylindrical main inducer body having an inner bore around which are horizontally disposed at least two space O-rings that define an annular space about a lower position of the drill sleeve. A cylindrical bearing body is removably connected to the inducer body and includes an inner bore for retaining at least one annular bearing assembly that is mounted to the drill sleeve.
Inventors
- 👤 Buford R. Hinds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/087; B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B23Q1/0036; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T409/00; Y10T409/30; Y10T409/303976; Y10T409/304032
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A fluid inducer and drill sleeve assembly comprising: a drill sleeve with a removable lower cylindrical sleeve; a cylindrical main inducer body having an inner bore around which are disposed at least two spaced O-rings and adapted to define an annular space about the removable lower cylindrical sleeve of the drill sleeve; a cylindrical bearing body having an inner bore for receiving therein an upper portion of the main inducer body and for retaining therein at least one annular bearing assembly mounted to the drill sleeve; and means for interconnecting the cylindrical main inducer body to the cylindrical bearing body.
Claim 2
Dependent Claim
100 words
A fluid inducer and drill sleeve assembly comprising: a drill sleeve with a removable lower cylindrical sleeve; a cylindrical main inducer body having an inner bore around which are disposed at least two spaced O-rings and adapted to define an annular space about the removable lower cylindrical sleeve of the drill sleeve; a cylindrical bearing body having an inner bore for receiving therein an upper portion of the main inducer body and for retaining therein at least one annular bearing assembly mounted to the drill sleeve; and means for interconnecting the cylindrical main inducer body to the cylindrical bearing body.
Claim 3
Dependent Claim
32 words
The fluid inducer of claim 1 wherein the cylindrical main inducer body includes means to introduce fluid through the body to an annular space defined between the at least two sealing elements.
Claim 4
Dependent Claim
27 words
The fluid inducer of claim 1 wherein the means for removably connecting the cylindrical bearing body to the drill sleeve includes an upper removable bearing retaining cap.
Claim 5
Dependent Claim
37 words
The fluid inducer of claim 1 wherein the means for removably connecting the cylindrical bearing body to the drill sleeve comprises an outer squeeze band disposed around the cylindrical bearing body, and means for tightening the band.
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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |