Patent US3758239A successfully refreshed from Google Patents.
US3758239A
Expired / Lapsed
US
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Controlled peristaltic pump
Assignee: Czech Academy of Sciences
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Filing: 1971-12-21
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Granted: 1973-09-11
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Expires: 1991-12-21
Abstract
Abstract In peristaltic pumps, using a number of mobile occluding organs which press a resilient hose against a support and which cause the advance of a medium within this hose, an additional support is provided from the limit point of occlusion up to the last contact point with the hose. The distance of the support from the track of the occluding organs being in inverse proportion to the required speed of advance of the medium in this hose.
Inventors
- 👤 J Hrdina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:11
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1223
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
Controlled peristaltic pump comprising at least one flexible hose having a suction end and a discharge end for suction and discharge, respectively, of a liquid medium, supporting means having an active surface for supporting said hose, compressing means disposed opposite said supporting means, movable along a predetermined path and adapted to progressively compress said hose against said supporting means and to generate a peristaltic pumping effect, said supporting means including at least a first support member substantially parallel to the path of said compressing means and a second support member disposed next to said first member, said second support member being adjustable with respect to the predetermined path to selectively vary the distance from said compressing means thereby controlling the action of said compressing means and the discharge of said liquid medium.
Claim 2
Dependent Claim
132 words
Controlled peristaltic pump comprising at least one flexible hose having a suction end and a discharge end for suction and discharge, respectively, of a liquid medium, supporting means having an active surface for supporting said hose, compressing means disposed opposite said supporting means, movable along a predetermined path and adapted to progressively compress said hose against said supporting means and to generate a peristaltic pumping effect, said supporting means including at least a first support member substantially parallel to the path of said compressing means and a second support member disposed next to said first member, said second support member being adjustable with respect to the predetermined path to selectively vary the distance from said compressing means thereby controlling the action of said compressing means and the discharge of said liquid medium.
Claim 3
Dependent Claim
35 words
The pump as defined in claim 1 wherein the second support member is pivotable with respect to the first support member to meet changing diameter and thickness requirements of hoses supported by the supporting means.
Claim 4
Dependent Claim
32 words
The pump as defined in claim 1 wherein the second support member is pivotable around an edge through which it contacts the first support member and is perpendicularly adjustable to said edge.
Claim 5
Dependent Claim
55 words
The pump as defined in claim 1 wherein the second support membEr is freely supported by set screws and provided with spring means acting in an inclined direction with respect to the active surface of the supporting means and pressing said second support member simultaneously against the first support member and against said set screws.
Claim 6
Dependent Claim
37 words
The pump as defined in claim 1 wherein the active surface of the second support member of the support means forms a step at the place of contact with the first support member of said support means.
Claim 7
Dependent Claim
63 words
The pump as defined in claim 1 wherein said compressing means further comprising spaced adjacent members which occlude said hose until a last point of occlusion, and continuing to engage said hose until a last point of contact, the distance between said last point of occlusion and said last point of contact being substantially equal to the spacing between said spaced adjacent members.
References Cited (Backward Citations)
GB467288A
Cited
FR1119170A
Cited
US3101674A
Cited
US3137241A
Cited
US3597124A
Cited
US3628891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |