US3872940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self propelled self-adjusting carriage able to move along curved profiles as pipelines
Assignee: SnamProgetti SpA
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Filing: 1972-05-12
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Granted: 1975-03-25
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Expires: 1992-05-12
Abstract
Abstract The present invention relates to a self-adjusting carriage device which is able to move along curved profile paths such as pipelines and the like, effecting various operations including the inspection, cleaning and varnishing of a pipe, and comprising a self-adjusting guide system, and thereby always able to maintain a rectilinear path along a pipeline or other curved profile path.
Inventors
- 👤 Arnaldo Gambini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/14; B61; B61B; B61B13/00; B61B13/10; B62; B62D; B62D1/00; B62D1/24; B62D1/26; B62D11/00; B62D11/24; B62D55/00; B62D55/08; B62D55/18; B62D55/26; F; F16; F16L; F16L2101/00; F16L2101/30; F16L2101/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A self-propelled self-adjusting carriage able to move along curves profiles, such as pipelines, said carriage comprising: i. a bearing body; ii. means to propel said carriage; iii. a self-adjusting guide system on said bearing body whereby self-adjustment is achieved by gravity, said self-adjusting guide system comprising wheels, said wheels provided with peripheral rollers mounted for free rotation around axes substantially orthogonal to the axes of rotation of said wheels so that said rollers are located between the sides of the wheels.
Claim 2
Dependent Claim
81 words
A self-propelled self-adjusting carriage able to move along curves profiles, such as pipelines, said carriage comprising: i. a bearing body; ii. means to propel said carriage; iii. a self-adjusting guide system on said bearing body whereby self-adjustment is achieved by gravity, said self-adjusting guide system comprising wheels, said wheels provided with peripheral rollers mounted for free rotation around axes substantially orthogonal to the axes of rotation of said wheels so that said rollers are located between the sides of the wheels.
Claim 3
Dependent Claim
18 words
A carriage as defined in claim 1 wherein said wheels are paired and said rollers are in phase.
Claim 4
Dependent Claim
26 words
A carriage as defined in claim 1 wherein said wheels and rollers comprise the same material selected from metals, metal alloys, elastomers, and synthetic elastomeric-like substances.
Claim 5
Dependent Claim
25 words
A carriage as defined in claim 1 wherein said wheels and rollers comprise different materials selected from metals, metal alloys, elastomers, and synthetic elastomeric-like substances.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |