Patent US3866882A successfully refreshed from Google Patents.
US3866882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for continuously pulling an elongated member
Assignee: IFP Energies nouvelles
•
Filing: 1973-05-22
•
Granted: 1975-02-18
•
Expires: 1993-05-22
Abstract
Abstract A device for continuously pulling an elongated member, such as a pipe or cable, comprising pairs of opposite driving elements provided with endless chains carrying gripping pads. Each element is removably housed in a recess provided in a frame having an axial passageway for the elongated member.
Inventors
- 👤 Yves Willm
- 👤 Jean Thiery
- 👤 Michel Chatard
- 👤 Pierre Grolet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:48
CPC Classifications
B; B65; B65H; B65H51/00; B65H51/14; E; E21; E21B; E21B19/00; E21B19/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
A device for continuously pulling an elongated member, comprising frame means provided with a passageway for the elongated member, said passageway having an axis, a series of pulling means carried by said frame means and arranged along said axis, each of the pulling means comprising at least two endless pulling devices carrying gripping pads, guide means provided in said frame means for each endless pulling device, each endless pulling device being provided with hydraulic jack means releasably connected to said endless pulling device and carried by said frame means, said hydraulic jack means being provided for reversibly displacing said endless pulling device from a position spaced from said axis to a gripping position closer to said axis, first hydraulic pipe means connected to each of said jack means for applying hydraulic pressure thereto, and means for synchronizing said pulling devices including a plurality of hydraulic motors operatively connected to each of said pulling devices, respectively, and second hydraulic pipe means comprising supply pipes for connecting said hydraulic motors in parallel to a common source of pressurized hydraulic fluid.
Claim 2
Independent Claim
178 words
A device for continuously pulling an elongated member, comprising frame means provided with a passageway for the elongated member, said passageway having an axis, a series of pulling means carried by said frame means and arranged along said axis, each of the pulling means comprising at least two endless pulling devices carrying gripping pads, guide means provided in said frame means for each endless pulling device, each endless pulling device being provided with hydraulic jack means releasably connected to said endless pulling device and carried by said frame means, said hydraulic jack means being provided for reversibly displacing said endless pulling device from a position spaced from said axis to a gripping position closer to said axis, first hydraulic pipe means connected to each of said jack means for applying hydraulic pressure thereto, and means for synchronizing said pulling devices including a plurality of hydraulic motors operatively connected to each of said pulling devices, respectively, and second hydraulic pipe means comprising supply pipes for connecting said hydraulic motors in parallel to a common source of pressurized hydraulic fluid.
Claim 3
Dependent Claim
25 words
A device according to claim 1, wherein each endless pulling device is removably mounted in said frame means and is slidable along said guide means.
Claim 4
Dependent Claim
26 words
A device according to claim 1, wherein each of said pulling means comprises at least a pair of endless pulling devices symmetrically located about said axis.
Claim 5
Dependent Claim
20 words
A device according to claim 1, including means for controlling the position of each pulling device relative to said axis.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |