Patent US2007211A successfully refreshed from Google Patents.
Patent US3649138A successfully refreshed from Google Patents.
US3649138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump apparatus for slurry and other viscous liquids
Assignee: Ireco Inc
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Filing: 1970-03-04
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Granted: 1972-03-14
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Expires: 1990-03-04
Abstract
Abstract A peristaltic pump is operated by squeezing rollers pressing on an elastic tube supported inside a semicylindrical chamber. The collapsed tube is reopened by traveling side rollers which press the tube transversely. This expedites refilling and increases pump capacity. A surge chamber consisting of an elastic hollow cylinder housed inside a tubular housing provided with inwardly projecting annular ribs smooths out both minor and major surges in flow of the viscous material.
Inventors
- 👤 Robert B Clay
- 👤 William A Doering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:54
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B11/00; F04B11/0008; F04B11/0033
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
A peristaltic pump apparatus for fluids such as slurries and the like which comprises, in combination, an arcuate channel in a frame member adapted to receive and house a peristaltic tube, a collapsible peristaltic tube fitted into said channel and having an inlet end connectable to a source of material to be pumped, a rotary carrier mounted concentrically with said channel, roller mounting means including an eccentric adjustable support secured to said carrier, a squeeze roller rotatably journaled on said mounting means for pressing and collapsing said peristaltic tube and thus forcing its contents forward from said inlet end towards an outlet, and plural successive pairs of tube opening rollers also carried by said rotary member and mounted progressively closer together to assist in opening the collapsed tube after the squeeze roller has passed along by pushing the edges of said collapsed tube towards each other in progressive steps thereby to accelerate refilling of said tube by said by said material from said inlet end.
Claim 2
Dependent Claim
165 words
A peristaltic pump apparatus for fluids such as slurries and the like which comprises, in combination, an arcuate channel in a frame member adapted to receive and house a peristaltic tube, a collapsible peristaltic tube fitted into said channel and having an inlet end connectable to a source of material to be pumped, a rotary carrier mounted concentrically with said channel, roller mounting means including an eccentric adjustable support secured to said carrier, a squeeze roller rotatably journaled on said mounting means for pressing and collapsing said peristaltic tube and thus forcing its contents forward from said inlet end towards an outlet, and plural successive pairs of tube opening rollers also carried by said rotary member and mounted progressively closer together to assist in opening the collapsed tube after the squeeze roller has passed along by pushing the edges of said collapsed tube towards each other in progressive steps thereby to accelerate refilling of said tube by said by said material from said inlet end.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1 which includes a plurality of squeeze rollers mounted on said rotary carrier and a plurality of pairs of said opening rollers following each squeeze roller.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 1 which comprises an elastic surge chamber connected to the outlet of the peristaltic tube to smooth out the pump output.
Claim 5
Dependent Claim
24 words
Combination according to claim 1 which comprises a check valve connected to the pump outlet and a surge chamber connected to said check valve.
Claim 6
Dependent Claim
66 words
A pump according to claim 1 which includes a surge chamber of low volume expansion characteristics comprising an axially extending elastic inner chamber wall member, an outer chamber wall member coaxial with and spaced annularly from said inner chamber, and a plurality of spaced rib elements located in the annular space between said chambers and adapted to limit expansion of the elastic inner chamber wall member.
Claim 7
Dependent Claim
28 words
A pump according to claim 5 wherein the spaced rib elements are in the form of spaced annular ring elements protruding inwardly from the outer chamber wall member.
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |