US3690136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tubing guide and straightener apparatus
Assignee: Bowen Tools Inc
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Filing: 1970-10-27
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Granted: 1972-09-12
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Expires: 1990-10-27
Abstract
Abstract A well tubing guide and straightener apparatus for positioning between a reel and a tubing injector for feeding tubing from the reel to the injector, and vice versa, with a change in direction thereof and with a limited amount of permanent deformation of the tubing.
Inventors
- 👤 Damon T Slator
- 👤 Archie R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:55
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/22; B; B21; B21C; B21C47/00; B21C47/16; B21C47/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A well tube guide and straightner apparatus comprising: an arcuate guide frame formed in an arc with a predetermined radius; said guide frame having a lower end supported at a substantially horizontal position and curving upwardly for a 90* portion of said arc to substantially the highest point of said frame and with the remainder of the frame curving downwardly for approximately 45* and terminating in the upper end of said guide frame; roller means mounted on said frame for receiving and guiding a tubing which has been curved thereover; and a tubing straightener mounted at the lower end of said frame for applying a small bending force to the tubing in a reverse direction to the curve in said roller means to thereby counteract any tendency of the tubing to remain curved as it is fed from said roller means.
Claim 2
Dependent Claim
141 words
A well tube guide and straightner apparatus comprising: an arcuate guide frame formed in an arc with a predetermined radius; said guide frame having a lower end supported at a substantially horizontal position and curving upwardly for a 90* portion of said arc to substantially the highest point of said frame and with the remainder of the frame curving downwardly for approximately 45* and terminating in the upper end of said guide frame; roller means mounted on said frame for receiving and guiding a tubing which has been curved thereover; and a tubing straightener mounted at the lower end of said frame for applying a small bending force to the tubing in a reverse direction to the curve in said roller means to thereby counteract any tendency of the tubing to remain curved as it is fed from said roller means.
Claim 3
Dependent Claim
54 words
The apparatus set forth in claim 1, wherein said guide frame includes: a curved hollow base member extending for substantially the full arc of curvature of said guide frame; and a pair of laterally spaced roller supports secured to said base member and having a curvature corresponding to the curvature of said base member.
Claim 4
Dependent Claim
33 words
The structure set forth in claim 2, wherein said roller means includes: a plurality of rollers mounted on said roller supports at longitudinally spaced points along the curved path formed by said supports.
Claim 5
Dependent Claim
37 words
The structure set forth in claim 2, wherein: each of said roller supports is an angle iron member, with one leg thereof secured to said base member and with the other leg extending upwardly substantially perpendicular thereto.
Claim 6
Dependent Claim
36 words
The structure set forth in claim 1, including: brace means connected to said frame near its upper end but inwardly therefrom for providing an unobstructed upper end of said frame thereof while still supporting said frame.
Claim 7
Dependent Claim
98 words
The structure set forth in claim 1, wherein said straightener includes: a pair of longitudinally spaced rollers adapted to be disposed on one side of the tubing and in contact therewith; a third roller disposed on the opposite side of said pair of rollers in contact with the other side of said tubing and in alignment with the space between said pair of rollers; and means for adjusting said third roller towards and away from said pair of rollers for applying a controlled bending force on the tubing passing between said third roller and said pair of rollers.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |