US3597124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perastaltic pump
Assignee: Cenco Medical Health Supply Corp
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Filing: 1969-09-04
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Granted: 1971-08-03
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Expires: 1989-09-04
Abstract
Abstract A perastaltic pump having a plurality of rollers mounted on a rotating pump wheel. Compressible tubing is supported by a tube support means which is manually operable to move the tubing into engagement with the rollers on the pumping wheel. Through the novel shape of the tubing support means, the tube may be easily installed and removed and functions to prevent tubing creep during operation.
Inventors
- 👤 Robert P Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1284
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
In a perastaltic-type pump having a pump housing supporting a pumping wheel, said pumping wheel having means for engagement with a flexible tube through which material is pumped, the improvement comprising a tube support means mounted on said housing for movement toward and away from said pumping wheel, a tubing support surface on said tube support means, said tubing support surface being of generally U-shaped configuration to reverse the direction of the tube thereon and thereby prevent tubing creep during operation of said pump, said tube support surface including an angular entrance portion merging into a substantially linear section radially spaced from said pumping wheel, said linear section merging with a generally U-shaped end portion leading into a smooth arcuate portion adapted to be moved to a position closely spaced from said pumping wheel and a generally linear portion exiting from said arcuate portion.
Claim 2
Dependent Claim
144 words
In a perastaltic-type pump having a pump housing supporting a pumping wheel, said pumping wheel having means for engagement with a flexible tube through which material is pumped, the improvement comprising a tube support means mounted on said housing for movement toward and away from said pumping wheel, a tubing support surface on said tube support means, said tubing support surface being of generally U-shaped configuration to reverse the direction of the tube thereon and thereby prevent tubing creep during operation of said pump, said tube support surface including an angular entrance portion merging into a substantially linear section radially spaced from said pumping wheel, said linear section merging with a generally U-shaped end portion leading into a smooth arcuate portion adapted to be moved to a position closely spaced from said pumping wheel and a generally linear portion exiting from said arcuate portion.
Claim 3
Dependent Claim
44 words
The improvement is perastaltic-type pumps as defined in claim 1 wherein lug means is provided an opposition to each of said linear sections, said lug means maintaining said tube in contact with said linear sections to prevent tube creep during operation of said pump.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |