Patent US4352567A successfully refreshed from Google Patents.
Patent US3739459A successfully refreshed from Google Patents.
US3739459A
Expired / Lapsed
US
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Method of manufacture of a ribbed pile
Assignee: Individual
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Filing: 1971-06-07
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Granted: 1973-06-19
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Expires: 1991-06-07
Abstract
Abstract This low-cost, light-weight, high-strength, hollow cylindrical pile having longitudinal ribs is manufactured by rolling an elongated metal plate of predetermined width so as to produce spaced ridges thereon extending at a predetermined angle between lateral edges. The ridged metal plate is spirally wound so that the ridges register to produce longitudinally-extending ribs and the juxtaposed lateral edges are joined, preferably by welding, to form a continuous spiraled joint. When driven into a penetrable medium, the ribs provide directional control and means for joining adjacent piles into a unitary structure.
Inventors
- 👤 A Otani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:11
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/02; E02D5/03; E02D5/04; E02D5/22; E02D5/24; E02D5/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A method of manufacturing ribbed metallic tubing pile having a plurality of continuous, spaced, upstanding ribs extending longitudinally along said pile, said method comprising the steps of: a. providing an elongated flat strip of the metal of predetermined constant width defining two elongate, parallel lateral edges; b. mechanically working said strip so as to integrally form on at least one surface thereof a plurality of spaced, upstanding parallel ridges of predetermined height, said ridges having end portions extending to each of said lateral edges of said strip and being disposed at an acute angle relative to said lateral edges of said strip; c. spirally winding the resulting ridged strip so that the lateral edges are juxtaposed to form a continuous cylindrical tubing, the diameter of said continuous cylindrical tubing, the width of said strip and said acute angle being predetermined so that the end portion of each of said parallel ridges on one of said lateral edges aligns with the end portion of another of said parallel ridges on the other of said lateral edges, so as to form a plurality of longitudinal continuous spaced ribs; and d. joining the juxtaposed lateral edges of the spirally-wound ridged strip.
Claim 2
Independent Claim
198 words
A method of manufacturing ribbed metallic tubing pile having a plurality of continuous, spaced, upstanding ribs extending longitudinally along said pile, said method comprising the steps of: a. providing an elongated flat strip of the metal of predetermined constant width defining two elongate, parallel lateral edges; b. mechanically working said strip so as to integrally form on at least one surface thereof a plurality of spaced, upstanding parallel ridges of predetermined height, said ridges having end portions extending to each of said lateral edges of said strip and being disposed at an acute angle relative to said lateral edges of said strip; c. spirally winding the resulting ridged strip so that the lateral edges are juxtaposed to form a continuous cylindrical tubing, the diameter of said continuous cylindrical tubing, the width of said strip and said acute angle being predetermined so that the end portion of each of said parallel ridges on one of said lateral edges aligns with the end portion of another of said parallel ridges on the other of said lateral edges, so as to form a plurality of longitudinal continuous spaced ribs; and d. joining the juxtaposed lateral edges of the spirally-wound ridged strip.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the metal is steel and the juxtaposed lateral edges are joined by welding the same.
Claim 4
Dependent Claim
45 words
The method of claim 1 wherein the step of mechanically working said strip is carried out by feeding the strip into the nip between opposed rolls, at least one of said rolls being provided with recesses corresponding in their configuration and disposition to said ridges.
Claim 5
Dependent Claim
30 words
The method of claim 1 including the step of embedding the resultant tubing in a penetrable medium adjacent to like tubing so that ribs of each are in juxtaposed relationship.
Claim 6
Dependent Claim
14 words
The method of claim 4 including the step of welding together the juxtaposed ribs.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |