US3881558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe thrust machine for horizontal drilling
Assignee: Individual
•
Filing: 1973-05-29
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Granted: 1975-05-06
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Expires: 1993-05-29
Abstract
Abstract A pipe thrust machine for horizontal drilling operations, comprising a runway bed, a pipe thrust head, a driving structure supporting said head and slidable on said runways by interposition of bearing and supporting wheels, and hydraulic means for advancing said driving structure through the intermediary of expansible tenons engaging on seating provided on said runways, thus transmitting the reaction of the advancing thrust of the pipe to the runways in correspondence of the plane of the centre of gravity of the structure.
Inventors
- 👤 Claudio Dolza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:59
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086; E21B7/00; E21B7/20
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
165 words
A horizontal earth boring and pipe laying machine comprising: a runway bed delimited by two space longituidnal members; a movable carriage located in the space delimited by the two longitudinal members, the movable carriage having a vertical longituDinal barycentric plane midway between said longitudinal members and being adapted to carry a pipe; bearing and supporting wheels on said carriage for mounting the carriage so that it is movable along the runway bed; a pipe thrust head on said carriage for thrusting forward into the earth a pipe located in said barycentric plane; hydraulic driving means coupled to said carriage for advancing said carriage; tenons lockable against axial movement relative to said runway bed to provide an abutment for the hydraulic driving means, said tenons being positioned to transmit the resultant reaction of the advancing thrust of the pipe to the runway in said barycentric plane; and a hollow frame for slideably containing said reaction tenons, the pistons of the corresponding hydraulic driving means acting thereonto.
Claim 2
Dependent Claim
165 words
A horizontal earth boring and pipe laying machine comprising: a runway bed delimited by two space longituidnal members; a movable carriage located in the space delimited by the two longitudinal members, the movable carriage having a vertical longituDinal barycentric plane midway between said longitudinal members and being adapted to carry a pipe; bearing and supporting wheels on said carriage for mounting the carriage so that it is movable along the runway bed; a pipe thrust head on said carriage for thrusting forward into the earth a pipe located in said barycentric plane; hydraulic driving means coupled to said carriage for advancing said carriage; tenons lockable against axial movement relative to said runway bed to provide an abutment for the hydraulic driving means, said tenons being positioned to transmit the resultant reaction of the advancing thrust of the pipe to the runway in said barycentric plane; and a hollow frame for slideably containing said reaction tenons, the pistons of the corresponding hydraulic driving means acting thereonto.
Claim 3
Dependent Claim
22 words
A machine according to claim 1, wherein the length of the reaction tenons is equal to the height of said longitudinal members.
Claim 4
Dependent Claim
61 words
A machine according to claim 1, wherein said longitudinal members are made of metal sections and are provided with seats for the engagement of said reaction tenons, said seats being arranged along said longitudinal members and spaced at a constant pitch, the advancing thrust of said pipe thrust head being a multiple of the expansion stroke of the hudraulic driving means.
Claim 5
Dependent Claim
33 words
A machine according to claim 3, comprising opposed hydraulic jacks adapted to produce ejection of the tenons out of the hollow frame and their engagement with the corresponding seats on the runway bed.
Claim 6
Dependent Claim
61 words
A machine according to claim 1, wherein said longitudinal members are made of metal sections and are provided with seats for the engagement of said reaction tenons, said seats being arranged along said longitudinal members and spaced at a constant pitch, the advancing thrust of said pipe thrust head being a multiple of the expansion stroke of the hydraulic driving means.
Claim 7
Dependent Claim
37 words
A machine according to claim 5, wherein the length of the reaction tenons, as well as of the corresponding seats of said longitudinal members of said runway bed, is equal to the height of said longitudinal members.
Claim 8
Dependent Claim
134 words
A horizontal earth boring and pipe laying machine comprising: a runway bed; a movable carriage; bearing and supporting wheels mounting said carriage movable along said runway bed, said carriage being adapted to carry a pipe; a pipe thrust head mounted to said carriage for thrusting forward into the earth a pipe located in the common vertical longitudinal barycentric plane of said runway bed and carriage; reaction tenons for transmitting the resultant reaction of the advancing thrust of the pipe to said runway in the same barycentric plane; a hollow frame for slideably containing said reaction tenons, the pistons of the corresponding hydraulic driving means acting thereonto; an earth working implement; and a driving head for said working implement supported by the carriage and for operating said working implement through the interior of the pipe.
Claim 9
Dependent Claim
134 words
A horizontal earth boring and pipe laying machine comprising: a runway bed; a movable carriage; bearing and supporting wheels mounting said carriage movable along said runway bed, said carriage being adapted to carry a pipe; a pipe thrust head mounted to said carriage for thrusting forward into the earth a pipe located in the common vertical longitudinal barycentric plane of said runway bed and carriage; reaction tenons for transmitting the resultant reaction of the advancing thrust of the pipe to said runway in the same barycentric plane; a hollow frame for slideably containing said reaction tenons, the pistons of the corresponding hydraulic driving means acting thereonto; an earth working implement; and a driving head for said working implement supported by the carriage and for operating said working implement through the interior of the pipe.
Claim 10
Dependent Claim
31 words
A machine according to claim 7, including stems for supporting said pipe thrust head at its ends; and radial clamping means coupled to said stems for locking said stems in position.
Claim 11
Dependent Claim
15 words
A machine according to claim 8, wherein said radial clamping means comprises hydraulically operated jaws.
Claim 12
Dependent Claim
57 words
A machine according to claim 7, wherein said runway bed includes a pair of spaced longitudinal members, said pipe thrust head being located in the space delimited by said two longitudinal members of said runway bed; and the axis of the said pipe thrust head is contained in the barycentric plane of said runway bed and carriage.
Claim 13
Dependent Claim
22 words
A machine according to claim 10, wherein the length of the reaction tenons is equal to the height of said longitudinal members.
Claim 14
Dependent Claim
61 words
A machine according to claim 7, wherein said longitudinal members are made of metal sections and are provided with seats for the engagement of said reaction tenons, said seats being arranged along said lonGitudinal members and spaced at a constant pitch, the advancing thrust of said pipe thhrust head being a multiple of the expansion stroke of the hydraulic driving means.
Claim 15
Dependent Claim
33 words
A machine according to claim 12, comprising opposed hydraulic jacks adapted to produce ejection of the tenons out of the hollow frame and their engagement with the corresponding seats on the runway bed.
Claim 16
Dependent Claim
37 words
A machine according to claim 12, wherein the length of the reaction tenons, as well as of the corresponding seats of said longitudinal members of said runway bed, is equal to the height of said longitudinal members.
Claim 17
Dependent Claim
14 words
A machine according to claim 7 wherein said working implement comprises a scroll auger.
References Cited (Backward Citations)
US972856A
Cited
US2588068A
Cited
US3162254A
Cited
US3174562A
Cited
US3232360A
Cited
US3347521A
Cited
US3587755A
Cited
US3680412A
Cited
US3726506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |