US3668879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for burying riser pipe
Assignee: Shafter Concrete Pipe Co
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Filing: 1971-07-22
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Granted: 1972-06-13
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Expires: 1991-07-22
Abstract
Abstract Apparatus for burying flexible pipe with attached risers employs a pair of parallel upright plates defining an open-top slot between them. Continuous flexible pipe with attached risers is guided into the slot while the plates move forward longitudinally behind a trench-forming machine, the lower portions of the plates traveling in the trench. Hold-down mechanism in the slot holds the pipe down for subsequent covering with earth as the trench is backfilled. The hold-down mechanism permits the attached risers to pass through the use of a pivoted member having a pair of arms, one of which always overlies a portion of the flexible pipe. An actuator bar connected to the pivoted member is engaged by the risers to swing the member about its pivot to permit passage of each riser between the arms. Also, the pair of plates are pivotally connected to the trench-forming member and power means are provided for swinging the pair of plates to change their angular position.
Inventors
- 👤 Robert K Ogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/12; E02F5/10; E02F5/102
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
Apparatus for use with a trench-forming carrier for placing flexible pipe with attached risers in the trench, comprising in combination: a pair of longitudinal upright parallel plates spaced apart to define an open-top slot between them, means whereby the plates may be moved longitudinally by the carrier with their lower portions in the trench, means for guiding flexible pipe with attached risers into the slot, hold-down mechanism mounted on one of the plates and within said slot, said hold-down mechanism including a pivoted member having two arms, said member being movable between a first position in which one of the arms overlies the flexible pipe and a second position in which the other arm overlies the flexible pipe, and means actuated by the risers for swinging said pivoted member between said positions.
Claim 2
Dependent Claim
132 words
Apparatus for use with a trench-forming carrier for placing flexible pipe with attached risers in the trench, comprising in combination: a pair of longitudinal upright parallel plates spaced apart to define an open-top slot between them, means whereby the plates may be moved longitudinally by the carrier with their lower portions in the trench, means for guiding flexible pipe with attached risers into the slot, hold-down mechanism mounted on one of the plates and within said slot, said hold-down mechanism including a pivoted member having two arms, said member being movable between a first position in which one of the arms overlies the flexible pipe and a second position in which the other arm overlies the flexible pipe, and means actuated by the risers for swinging said pivoted member between said positions.
Claim 3
Dependent Claim
30 words
The combination set forth in claim 1 in which the riser-actuated means includes an actuator bar connected to one of said arms and positioned for sliding engagement by said risers.
Claim 4
Dependent Claim
38 words
The combination set forth in claim 2 in which the actuator bar is pivotally connected at one end to the latter said arm, and wherein means are provided for slidably guiding the other end of the actuator bar.
Claim 5
Dependent Claim
121 words
Apparatus for laying flexible pipe with attached risers, comprising in combination: a trench-forming apparatus, a pair of longitudinal upright parallel plates spaced apart to define an open-top slot between them, means whereby the plates may be moved longitudinally in the trench by the trench-forming apparatus, means for feeding flexible pipe with attached risers into the slot, hold-down mechanism mounted on one of the plates and within said slot, said hold-down mechanism including a member having two arms, said member being movable between a first position in which one of the arms overlies the flexible pipe and a second position in which the other arm overlies the flexible pipe, and means actuated by the risers for moving said member between said positions.
Claim 6
Dependent Claim
121 words
Apparatus for laying flexible pipe with attached risers, comprising in combination: a trench-forming apparatus, a pair of longitudinal upright parallel plates spaced apart to define an open-top slot between them, means whereby the plates may be moved longitudinally in the trench by the trench-forming apparatus, means for feeding flexible pipe with attached risers into the slot, hold-down mechanism mounted on one of the plates and within said slot, said hold-down mechanism including a member having two arms, said member being movable between a first position in which one of the arms overlies the flexible pipe and a second position in which the other arm overlies the flexible pipe, and means actuated by the risers for moving said member between said positions.
Claim 7
Dependent Claim
62 words
The combination set forth in claim 4 in which the trench-forming apparatus includes a wheel supported frame, an earth contacting ripper fixed on the frame to form the trench, means for lowering the frame relative to the wheels, pivotal means connecting the pair of plates to the ripper, and means for adjusting the angular position of the plates about said pivotal means.
Claim 8
Dependent Claim
99 words
As a subcombination, for use between parallel upright plates: a support adapted for mounting on a first of the plates, a member having two arms, pivot means mounting the member on said support, said member being movable between a first position in which one of the arms extends into proximity with the second of said plates and a second position in which the otheR arm extends into proximity with said second of the plates, an actuator bar pivotally connected at one end to one of said arms, and means for slidably guiding the other end of the actuator bar.
Claim 9
Dependent Claim
99 words
As a subcombination, for use between parallel upright plates: a support adapted for mounting on a first of the plates, a member having two arms, pivot means mounting the member on said support, said member being movable between a first position in which one of the arms extends into proximity with the second of said plates and a second position in which the otheR arm extends into proximity with said second of the plates, an actuator bar pivotally connected at one end to one of said arms, and means for slidably guiding the other end of the actuator bar.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |