Patent US3172367A successfully refreshed from Google Patents.
US3172367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller type pump
Assignee: Bayer Corp
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Filing: 1963-01-08
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Granted: 1965-03-09
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Expires: 1983-01-08
Abstract
No abstract record available.
Inventors
- 👤 Nelson G Kling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A MULTIPLE TUBE PUMP COMPRISING A PLURALITY OF RESILIENTLY COMPRESSIBLE TUBES AT LEAST ONE OF WHICH HAS A SMALLER INTERNAL DIAMETER THAN THE OTHER OF SAID TUBES, A FIRST SET OF A PLURALITY OF CIRCUMFERENTIALLY SPACED ROLLERS, A SECOND SET OF A PLURALITY OF CIRCUMFERENTIALLY SPACED ROLLERS, THE DIAMETERS OF THE ROLLERS OF ONE OF SAID SETS BEING SMALLER THAN THE DIAMETERS OF THE OTHER OF SAID SETS OF ROLLERS, MEANS FOR HOLDING AT LEAST ONE RESILIENTLY COMPRESSIBLE TUBE IN TAUT CONDITION IN ENGAGEMENT WITH CERTAIN OF THE ROLLERS OF SAID FIRST SET, MEANS FOR HOLDING SAID ONE RESILIENTLY COMPRESSIBLE TUBE OF SMALLER INTERNAL DIAMETER IN LONGITUDINALLY TAUT CONDITION AND IN ENGAGEMENT WITH CERTAIN ROLLERS OF SAID SECOND SETS, AND MEANS COOPERATIVELY ASSOCIATED WITH SAID TWO SETS OF ROLLERS FOR ROTATING THE SAME TO SIMULTANEOUSLY COMPRESS SAID TUBES PRORESSIVELY ALONG THEIR LENTHS FOR THE PUMPING OPERATION.
Claim 2
Dependent Claim
147 words
IN A MULTIPLE TUBE PUMP COMPRISING A PLURALITY OF RESILIENTLY COMPRESSIBLE TUBES AT LEAST ONE OF WHICH HAS A SMALLER INTERNAL DIAMETER THAN THE OTHER OF SAID TUBES, A FIRST SET OF A PLURALITY OF CIRCUMFERENTIALLY SPACED ROLLERS, A SECOND SET OF A PLURALITY OF CIRCUMFERENTIALLY SPACED ROLLERS, THE DIAMETERS OF THE ROLLERS OF ONE OF SAID SETS BEING SMALLER THAN THE DIAMETERS OF THE OTHER OF SAID SETS OF ROLLERS, MEANS FOR HOLDING AT LEAST ONE RESILIENTLY COMPRESSIBLE TUBE IN TAUT CONDITION IN ENGAGEMENT WITH CERTAIN OF THE ROLLERS OF SAID FIRST SET, MEANS FOR HOLDING SAID ONE RESILIENTLY COMPRESSIBLE TUBE OF SMALLER INTERNAL DIAMETER IN LONGITUDINALLY TAUT CONDITION AND IN ENGAGEMENT WITH CERTAIN ROLLERS OF SAID SECOND SETS, AND MEANS COOPERATIVELY ASSOCIATED WITH SAID TWO SETS OF ROLLERS FOR ROTATING THE SAME TO SIMULTANEOUSLY COMPRESS SAID TUBES PRORESSIVELY ALONG THEIR LENTHS FOR THE PUMPING OPERATION.
References Cited (Backward Citations)
US2406485A
Cited
US2935028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |