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US3143124A
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Aiding flow of pseudo-plastics through conduits
Assignee: Shell USA Inc
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Filing: 1960-12-19
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Granted: 1964-08-04
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 David B Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/088; F04B43/10; F04B43/107; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/8593
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
METHOD OF AIDING THE FLOW OF A PSEUDO-PLASTIC LIQUID THROUGH A CONDUIT WHEREIN SAID LIQUID IS SITUATED AND IS INITIALLY AT REST COMPRISING THE STEPS OF MOVING A PAIR OF AXIALLY SPACED WALLS OF SAID CONDUIT WHICH ARE IN CONTACT WITH SAID LIQUID ALTERNATELY IN OPPOSITE DIRECTIONS SO AS ALTERNATELY TO DIMINISH AND INCREASE THE CONDUIT VOLUMES OF THE CONDUIT ZONES ADJOINING SAID WALLS, SAID MOTIONS BEING COORDINATED SO THAT THE VOLUME INCREASES AT ONE SAID WALL WHILE IT DIMINISHES AT THE OTHER THROUGHOUT THE ENTIRE MOVEMENT THEREOF, THEREBY INDUCING A RECIPROCATING FLOW OF SAID LIQUID AND REDUCING THE APPARENT VISCOSITY THEREOF AT LEAST AT THE CONDUIT WALL.
Claim 2
Dependent Claim
108 words
METHOD OF AIDING THE FLOW OF A PSEUDO-PLASTIC LIQUID THROUGH A CONDUIT WHEREIN SAID LIQUID IS SITUATED AND IS INITIALLY AT REST COMPRISING THE STEPS OF MOVING A PAIR OF AXIALLY SPACED WALLS OF SAID CONDUIT WHICH ARE IN CONTACT WITH SAID LIQUID ALTERNATELY IN OPPOSITE DIRECTIONS SO AS ALTERNATELY TO DIMINISH AND INCREASE THE CONDUIT VOLUMES OF THE CONDUIT ZONES ADJOINING SAID WALLS, SAID MOTIONS BEING COORDINATED SO THAT THE VOLUME INCREASES AT ONE SAID WALL WHILE IT DIMINISHES AT THE OTHER THROUGHOUT THE ENTIRE MOVEMENT THEREOF, THEREBY INDUCING A RECIPROCATING FLOW OF SAID LIQUID AND REDUCING THE APPARENT VISCOSITY THEREOF AT LEAST AT THE CONDUIT WALL.
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |