US3692108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propelling devices for tools to lower or raise safety appliances in oil wells
Assignee: Individual
•
Filing: 1971-04-15
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Granted: 1972-09-19
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Expires: 1991-04-15
Abstract
Abstract A hydraulic propelling device for oil-well tools, consisting of a hollow cylindrical body containing radial openings of small diameter, and characterized by the fact that a membrane of elastically deformable material, both ends of which are embedded in the said hollow cylindrical body, is equipped with one series of metal fittings, attached round the middle at right angles to the axis of the propelling device, with two other series of metal fittings on each side of this first series.
Inventors
- 👤 Guy Soulie
- 👤 Gerard Lozach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:15
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/08; E21B23/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
A propelling device for tools to lower or raise safety appliances in oil wells, consisting of a hollow body, generally cylindrical in shape, open at both ends and surrounded by packing composed of an elastomer tubing carrying rigid fittings which are pressed outwards radially under the pressure of fluid entering the hollow part of the body and passing through apertures in the walls of the said body, characterized by the fact that the flexible tubing 2 is fixed hermetically to the hollow body 1 at both ends, and that the metal fittings attached to the outer surface of the said tubing consist of one series of fittings 3 round the middle of the hollow body at right angles to its axis, in the form of segments of a ring separated by small spaces 7, and, on each side of this first series of fittings, another series of elongated lengthwise fittings 4, 5, one end of which is in contact with the matching frontal surface of the ring segments.
Claim 2
Dependent Claim
168 words
A propelling device for tools to lower or raise safety appliances in oil wells, consisting of a hollow body, generally cylindrical in shape, open at both ends and surrounded by packing composed of an elastomer tubing carrying rigid fittings which are pressed outwards radially under the pressure of fluid entering the hollow part of the body and passing through apertures in the walls of the said body, characterized by the fact that the flexible tubing 2 is fixed hermetically to the hollow body 1 at both ends, and that the metal fittings attached to the outer surface of the said tubing consist of one series of fittings 3 round the middle of the hollow body at right angles to its axis, in the form of segments of a ring separated by small spaces 7, and, on each side of this first series of fittings, another series of elongated lengthwise fittings 4, 5, one end of which is in contact with the matching frontal surface of the ring segments.
Claim 3
Dependent Claim
60 words
A propelling device according to claim 1, characterized by the fact that the other end of each lengthwise fitting 4 or 5, away from the center, is embedded with the corresponding end of the tubing 2 in a ring-shaped groove 12, which forms part of a wider section 13 at the corresponding end of the hollow body of the device.
Claim 4
Dependent Claim
36 words
A propelling device according to claim 1, characterized by the Fact that, opposite each space 7 between two central fittings 3, is placed a lengthwise fitting 4 or 5, which is wider than the said space.
Claim 5
Dependent Claim
40 words
A propelling device according to claim 2, characterized by the fact that, between every two lengthwise fittings 4 or 5 opposite a space 7 between two central fittings 3, there is at least one other lengthwise fitting 4 or 5.
Claim 6
Dependent Claim
53 words
A propelling device according to claim 2, characterized by the fact that the end of each lengthwise fitting 4 or 5 opposite a space 7 between two central fittings 3 is fork-shaped 4a or 5a, and fits loosely to part of the section of the ends of the two adjoining central fittings 3.
Claim 7
Dependent Claim
52 words
A propelling device according to claim 2, characterized by the fact that the central fittings 3 have a T-shaped cross-section, the central section extending outwards from the tubing 2, and only the two arms of the T fitting inside the fork-shaped ends 4a and 5a of the lengthwise fittings 4 and 5.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |