Patent US1880246A successfully refreshed from Google Patents.
Patent US4708604A successfully refreshed from Google Patents.
US4708604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure surface for a peristaltic pump
Assignee: Abbott Laboratories
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Filing: 1986-09-12
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Granted: 1987-11-24
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Expires: 2006-09-12
Abstract
Abstract A pressure plate for a peristaltic pump utilizing flexible tubing has an arcuate surface and a pivot mount. The arcuate surface is retained in operative association with the flexible tubing by a spring bias.
Inventors
- 👤 Edward H. Kidera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A peristaltic pump comprising: a length of flexible tubing: a rotatable pump head having a plurality of pressure wheels constructed and arranged for repetitive and successive compression of said flexible tubing; a plate member having an arcuate surface against which said flexible tubing may be compressed by said pressure wheels; a mechanical spring operatively associated with said plate member to retain said plate member in an open position; a pivot member operatively associated with said plate member to position said plate member with respect to said rotatable pump head and said flexible tubing; and means for resiliently biasing said arcuate surface against said compressible tubing; whereby when said plate member is rotated on said pivot member into a position for operative engagement with said flexible tubing, said means for resiliently biasing said pump head will hold said arcuate surface in operative engaement with said flexible tubing.
Claim 2
Dependent Claim
146 words
A peristaltic pump comprising: a length of flexible tubing: a rotatable pump head having a plurality of pressure wheels constructed and arranged for repetitive and successive compression of said flexible tubing; a plate member having an arcuate surface against which said flexible tubing may be compressed by said pressure wheels; a mechanical spring operatively associated with said plate member to retain said plate member in an open position; a pivot member operatively associated with said plate member to position said plate member with respect to said rotatable pump head and said flexible tubing; and means for resiliently biasing said arcuate surface against said compressible tubing; whereby when said plate member is rotated on said pivot member into a position for operative engagement with said flexible tubing, said means for resiliently biasing said pump head will hold said arcuate surface in operative engaement with said flexible tubing.
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) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |