US5088522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump hose for a peristaltic pump
Assignee: B Braun Melsungen AG
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Filing: 1990-03-21
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Granted: 1992-02-18
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Expires: 2010-03-21
Abstract
Abstract A pump hose for a peristaltic pump consists of two arcuate portions that merge along kink lines so that the undeformed hose lumen has the cross-sectional shape of a convex lens. The joinings of the arcuate portions are joined by outwardly extending ribs. When the hose is pressed, only minor squeezing occurs at the joinings. The hose has a considerably improved squeezing and restoring behavior. The ribs prevent an excessive squeezing.
Inventors
- 👤 Dieter Rath
- 👤 Fredrich von der Haar
- 👤 Hans-Josef Gerlach
- 👤 Reinhard Knuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0072
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A hose for a peristaltic pump, the hose having a longitudinal portion for being mechanically squeezed by at least one member of the peristaltic pump at progressive locations along the length of the hose, the hose comprising: a first arcuate portion having a thickness and defining an inner wall, a second arcuate portion having a thickness and defining an inner wall, the first arcuate portion and the second arcuate portion being substantially symmetrically disposed and being joined at at least one joining to define a lumen, the inner wall of the first arcuate portion and the inner wall of the second arcuate portion defining an opening angle at the joining of less than 180°, and at least one rib protruding outwardly from the joining, the rib having a thickness which is approximately equal to the sum of the thickness of the first arcuate portion and the thickness of the second arcuate portion.
Claim 2
Dependent Claim
152 words
A hose for a peristaltic pump, the hose having a longitudinal portion for being mechanically squeezed by at least one member of the peristaltic pump at progressive locations along the length of the hose, the hose comprising: a first arcuate portion having a thickness and defining an inner wall, a second arcuate portion having a thickness and defining an inner wall, the first arcuate portion and the second arcuate portion being substantially symmetrically disposed and being joined at at least one joining to define a lumen, the inner wall of the first arcuate portion and the inner wall of the second arcuate portion defining an opening angle at the joining of less than 180°, and at least one rib protruding outwardly from the joining, the rib having a thickness which is approximately equal to the sum of the thickness of the first arcuate portion and the thickness of the second arcuate portion.
Claim 3
Dependent Claim
16 words
The hose as set forth in claim 1, wherein the opening angle is less than 150°.
Claim 4
Dependent Claim
26 words
The hose as set forth in claim 1, comprising a length of hose having a wall thickness which is reduced relative to adjacent lengths of hose.
Claim 5
Dependent Claim
16 words
The hose as set forth in claim 1, comprising at least one integrally formed fastening member.
Claim 6
Dependent Claim
21 words
The hose as set forth in claim 1, wherein the lumen defines a substantially continuous, kink-free cross-section in a longitudinal direction.
Claim 7
Dependent Claim
17 words
The hose as set forth in claim 1, wherein the opening angle is substantially equal to 120°.
Claim 8
Dependent Claim
33 words
The hose as set forth in claim 1, wherein the first arcuate portion, the second arcuate portion and the rib are integrally formed, whereby the hose defines a continuous, one-piece, integral cross section.
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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) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |