US3578885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus
Assignee: Individual
•
Filing: 1969-03-05
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Granted: 1971-05-18
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Expires: 1989-03-05
Abstract
Abstract A valve mechanism useful in a pump for pumping concrete comprising a valve member which alternately squeezes closed each of two flexible hoses leading from a hopper which holds concrete to be pumped, and which alternately squeezes closed a pair of flexible hoses leading to two outlets which discharge concrete under pressure. The valve member squeezes the hoses against anvils that are supported on springs, so that a hose is not damaged when a large rock is present therein at the point where the hose is being squeezed.
Inventors
- 👤 Kelly F Alton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/022; F16K11/027; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F04B7/00; F04B7/02; F04B7/0266; F04B7/0275; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
256 words
A valve mechanism for use with a concrete pump wherein concrete flows from a hopper downwardly through two feed lines into two rams which operate about 180* out of phase and then into two out lines that merge into an outlet, comprising: four flexible sections of hose, one in series with each of said feed lines and outlines; four anvil means, each positioned on one side of each of said hoses; a valve member having four closing portions for squeezing said hoses against said anvil means to close off the flow of concrete through said hoses; and means for reciprocating said valve member; a first of said feed lines and a first of said out lines disposed on one side of said valve member, and a second of said feed lines and second of said out lines positioned on another side of said member, said hoses of said feed lines lying above said hoses of said out lines at said anvil means; a first pair of said anvil means positioned between said first feed line and first out line, and a second pair of said anvil means positioned above and below said second feed line and second out line, respectively; and a first pair of said closing portions positioned above and below said first feed line and first out line, respectively, and a second pair of said closing portions positioned between said second feed line and second out line, whereby to control the flow of concrete for operation of said rams about 180* out of phase.
Claim 2
Dependent Claim
256 words
A valve mechanism for use with a concrete pump wherein concrete flows from a hopper downwardly through two feed lines into two rams which operate about 180* out of phase and then into two out lines that merge into an outlet, comprising: four flexible sections of hose, one in series with each of said feed lines and outlines; four anvil means, each positioned on one side of each of said hoses; a valve member having four closing portions for squeezing said hoses against said anvil means to close off the flow of concrete through said hoses; and means for reciprocating said valve member; a first of said feed lines and a first of said out lines disposed on one side of said valve member, and a second of said feed lines and second of said out lines positioned on another side of said member, said hoses of said feed lines lying above said hoses of said out lines at said anvil means; a first pair of said anvil means positioned between said first feed line and first out line, and a second pair of said anvil means positioned above and below said second feed line and second out line, respectively; and a first pair of said closing portions positioned above and below said first feed line and first out line, respectively, and a second pair of said closing portions positioned between said second feed line and second out line, whereby to control the flow of concrete for operation of said rams about 180* out of phase.
Claim 3
Dependent Claim
65 words
The valve mechanism described in claim 1 wherein: each of said anvil means includes knife means for supporting one side of a hose squeezed thereagainst, support means positioned on a side of said knife means opposite the hose squeezed against said knife means, and spring means disposed between said knife and support means to permit limited movement of said knife means away from said hose.
Claim 4
Dependent Claim
102 words
The valve mechanism described in claim 1 wherein: each of said anvil means includes a first member having a knife portion for contacting said hose, a second member spaced from said first member, a third member spaced from said second member, first coupling means for coupling said first and second members, and second coupling means for coupling said second and third members; and one of said coupling means includes spring means for biasing a pair of said members apart, and both of said coupling means includes means for varying the separation of the pair of members it couples prior to hose squeezing.
Claim 5
Dependent Claim
60 words
The valve mechanism described in claim 1 wherein: said feed lines and outlines have fittings on either side of said valve mechanism for the rapid installation and removal of the ends of said sections of hose, and said valve mechanism is open at the sides facing said fittings to permit the rapid insertion of said hoses through the valve mechanism.
Claim 6
Dependent Claim
112 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, including a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; a pair of anvils, each disposed on a side of one of said flexible hose sections; a valve member mounted for oscillation, said valve member having closing portions which alternately move toward said anvils as said valve member oscillates; and means for oscillating said valve member in synchronism with the operation of said ram, to alternately squeeze closed said feed and out lines.
Claim 7
Dependent Claim
112 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, including a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; a pair of anvils, each disposed on a side of one of said flexible hose sections; a valve member mounted for oscillation, said valve member having closing portions which alternately move toward said anvils as said valve member oscillates; and means for oscillating said valve member in synchronism with the operation of said ram, to alternately squeeze closed said feed and out lines.
Claim 8
Dependent Claim
167 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, inCluding a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; and valve apparatus for alternately squeezing closed said flexible hose sections of said feed line and out line in synchronism with the operation of said ram, said valve apparatus including a pair of anvils, each disposed on a side of a flexible hose section, valve closing means, and means for moving said valve closing means alternately toward said anvils, to move said valve closing means between first positions close to said anvils and second positions furthest therefrom, said valve closing means mounted for movement to third positions that increase the space over said anvils when said pump is not operating to facilitate the insertion of a flexible hose through the space between said anvils and valve closing means.
Claim 9
Dependent Claim
167 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, inCluding a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; and valve apparatus for alternately squeezing closed said flexible hose sections of said feed line and out line in synchronism with the operation of said ram, said valve apparatus including a pair of anvils, each disposed on a side of a flexible hose section, valve closing means, and means for moving said valve closing means alternately toward said anvils, to move said valve closing means between first positions close to said anvils and second positions furthest therefrom, said valve closing means mounted for movement to third positions that increase the space over said anvils when said pump is not operating to facilitate the insertion of a flexible hose through the space between said anvils and valve closing means.
Claim 10
Dependent Claim
149 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, including a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; valve means for alternately squeezing closed said flexible hose sections of said feed line and out line in synchronism with the operation of said ram, said valve means including an anvil member positioned on one side of each flexible hose section and a valve closing member movable against the opposite side of each flexible hose section; at least one of said members at each hose section being mounted to deflect away from said hose section upon encountering more than a predetermined resistance to squeezing, to prevent damage when a large piece of gravel is in position to prevent complete closing.
Claim 11
Dependent Claim
149 words
A concrete pump comprising: a hopper for receiving concrete; a ram for pushing concrete; a feed line leading from said hopper to said ram, including a flexible hose section; an out line leading from said ram for discharging concrete under pressure, said out line including a flexible hose section; valve means for alternately squeezing closed said flexible hose sections of said feed line and out line in synchronism with the operation of said ram, said valve means including an anvil member positioned on one side of each flexible hose section and a valve closing member movable against the opposite side of each flexible hose section; at least one of said members at each hose section being mounted to deflect away from said hose section upon encountering more than a predetermined resistance to squeezing, to prevent damage when a large piece of gravel is in position to prevent complete closing.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |