US3659663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole reamer-stabilizer with improved fluid circulation
Assignee: Dresser Industries Inc
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Filing: 1970-12-28
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Granted: 1972-05-02
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Expires: 1990-12-28
Abstract
Abstract A plurality of passages transmit fluid end to end in the reamerstabilizer body. Individual cutters are mounted on hollow shafts affixed to the reamer-stabilizer body. A circular passage transmits fluid to the center of the hollow shafts. Holes connect the outside of each shaft with the hollow central portion. Spiral grooves are located longitudinally on the inside diameter of the cutter.
Inventors
- 👤 Theodore R Dysart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:48
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; E21B10/23; E21B10/26; E21B10/28; E21B10/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A device to be connected as an element of a rotary drill string comprising: a main body portion that can be connected as an element of a drill string; at least one roller, rotatably mounted on said main body portion; and fluid passage means for transporting a circulating fluid from one end of the device to the other end, said fluid passage means including a central passage located on the central axis of said mAin body portion and at least one side passage located in the main body portion and offset from the central axis of said main body portion.
Claim 2
Independent Claim
100 words
A device to be connected as an element of a rotary drill string comprising: a main body portion that can be connected as an element of a drill string; at least one roller, rotatably mounted on said main body portion; and fluid passage means for transporting a circulating fluid from one end of the device to the other end, said fluid passage means including a central passage located on the central axis of said mAin body portion and at least one side passage located in the main body portion and offset from the central axis of said main body portion.
Claim 3
Dependent Claim
33 words
The device of claim 1 including second fluid passage means for transmitting a circulating fluid to said at least one roller, said second fluid passage means in communication with said fluid passage means.
Claim 4
Dependent Claim
35 words
The device of claim 2 wherein said second fluid passage means includes at least one shaft mounting said at least one roller, said shaft having a tubular portion and holes extending into said tubular portion.
Claim 5
Dependent Claim
20 words
The device of claim 3 wherein said tubular portion of said shaft extends along the entire length of the shaft.
Claim 6
Dependent Claim
20 words
The device of claim 3 including at least one groove on the external surface of said at least one shaft..
Claim 7
Dependent Claim
26 words
The device of claim 3 wherein said roller includes an annular, central opening and at least one groove on the internal surface of said central opening.
Claim 8
Dependent Claim
23 words
The device of claim 5 wherein said at least one groove extends at an oblique angle to the central axis of said roller.
Claim 9
Dependent Claim
15 words
The device of claim 6 wherein said at least one groove is a spiral groove.
Claim 10
Dependent Claim
90 words
In a bore control device having a body portion that can be connected as an element of a drill string with internal passage means for transporting circulating fluid from one end of the device to the other end and at least one roller mounted on a shaft connected to the body portion, the improvement comprising: passage means in said shaft, in communication with said internal passage means, for transporting circulating fluid to area between said roller and shaft; and at least one groove in the internal surface of said roller.
Claim 11
Dependent Claim
90 words
In a bore control device having a body portion that can be connected as an element of a drill string with internal passage means for transporting circulating fluid from one end of the device to the other end and at least one roller mounted on a shaft connected to the body portion, the improvement comprising: passage means in said shaft, in communication with said internal passage means, for transporting circulating fluid to area between said roller and shaft; and at least one groove in the internal surface of said roller.
Claim 12
Dependent Claim
23 words
The device of claim 9 wherein said at least one groove extends at an oblique angle to the central axis of said roller.
Claim 13
Dependent Claim
15 words
The device of claim 10 wherein said at least one groove is a spiral groove.
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |