US3663129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pump
Assignee: Individual
•
Filing: 1970-09-18
•
Granted: 1972-05-16
•
Expires: 1990-09-18
Abstract
Abstract A constant flow concrete pump having a number of hydraulically actuated concrete pump assemblies connected to inlet openings in one wall of a semi-fluid concrete hopper which has a single discharge opening in the opposite wall, and a valve mounted in the hopper and having an inlet of sufficient length to encompass at least two of the inlet openings in the hopper wall, relative movement is provided between the valves and inlet openings to provide constant flow of concrete through the hopper. The valve can be fixed, oscillated or rotated.
Inventors
- 👤 Leon A Antosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:25
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F04B11/00; F04B11/005; F04B19/00; F04B19/02; F04B19/027; F04B7/00; F04B7/0019; F04B7/0034; F04B7/008; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; F04B9/1172; F04B9/1174; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
141 words
A constant flow concrete pump comprising: a frame, a concrete hopper mounted on said frame having a number of inlet openings and an outlet opening, a number of concrete pump assemblies corresponding to said inlet openings, each assembly including a concrete cylinder connected to one of said inlet openings, and a piston mounted for reciprocal motion in said cylinder, one of said assemblies being operated at all times to provide a continuous flow of concrete through one of said inlet openings, a discharge duct positioned in said outlet opening, a valve positioned in said hopper and having a passage terminating at one end in an inlet of sufficient length to encompass two of said inlet openings and an outlet at the other end operatively connected to said outlet opening, and means for producing continuous motion between said valve and inlet openings.
Claim 2
Dependent Claim
141 words
A constant flow concrete pump comprising: a frame, a concrete hopper mounted on said frame having a number of inlet openings and an outlet opening, a number of concrete pump assemblies corresponding to said inlet openings, each assembly including a concrete cylinder connected to one of said inlet openings, and a piston mounted for reciprocal motion in said cylinder, one of said assemblies being operated at all times to provide a continuous flow of concrete through one of said inlet openings, a discharge duct positioned in said outlet opening, a valve positioned in said hopper and having a passage terminating at one end in an inlet of sufficient length to encompass two of said inlet openings and an outlet at the other end operatively connected to said outlet opening, and means for producing continuous motion between said valve and inlet openings.
Claim 3
Dependent Claim
15 words
The pump according to claim 1 including means for oscillating said valve in said hopper.
Claim 4
Dependent Claim
15 words
The pump according to claim 1 including means for rotating said valve in said hopper.
Claim 5
Dependent Claim
17 words
The pump according to claim 1 including means for moving said pump assemblies laterally in said hopper.
Claim 6
Dependent Claim
24 words
The pump according to claim 1 wherein said producing means includes an auxiliary hydraulic pump assembly operatively connected to one of said inlet openings.
Claim 7
Dependent Claim
20 words
The pump according to claim 5 wherein said auxiliary pump assembly is connected directly to said valve at all times.
Claim 8
Dependent Claim
28 words
The pump according to claim 1 including in a large flange on said valve for sealing the inlet openings prior to connecting an inlet opening to said valve.
Claim 9
Dependent Claim
26 words
The pump accordingly to claim 7 including a hydraulic assembly operatively connected to said valve for maintaining a predetermined pressure between the flange and the hopper.
Claim 10
Dependent Claim
113 words
A constant flow concrete pump comprising, a frame, means for confining a semi-fluid concrete material on said frame, a discharge duct operatively connected to said confining means, means connected to said confining means for withdrawing a portion of the semi-fluid material from said confining means, a valve having a passage terminating at one end in an inlet of sufficient length to communicate with two of said withdrawing means and an outlet at the other end operatively connected to said discharge duct, said withdrawing means being discharged into said valve, and means for maintaining communication between said valve and the discharging withdrawing means to product a constant flow of material through said discharge duct.
Claim 11
Dependent Claim
113 words
A constant flow concrete pump comprising, a frame, means for confining a semi-fluid concrete material on said frame, a discharge duct operatively connected to said confining means, means connected to said confining means for withdrawing a portion of the semi-fluid material from said confining means, a valve having a passage terminating at one end in an inlet of sufficient length to communicate with two of said withdrawing means and an outlet at the other end operatively connected to said discharge duct, said withdrawing means being discharged into said valve, and means for maintaining communication between said valve and the discharging withdrawing means to product a constant flow of material through said discharge duct.
Claim 12
Dependent Claim
31 words
The pump according to claim 9 including means for sealing the connection of said withdrawing means to said valve prior to completing the connection of said withdrawing means to said valve.
Claim 13
Dependent Claim
20 words
The pump according to claim 10 wherein said sealing means includes a hydraulic assembly for maintaining a controlled seal pressure.
Claim 14
Dependent Claim
12 words
The pump according to claim 9 including means for oscillating said valve.
Claim 15
Dependent Claim
18 words
The pump according to claim 12 wherein said withdrawing means comprises at least two hydraulically actuated pump assemblies.
Claim 16
Dependent Claim
21 words
The pump according to claim 12 wherein said withdrawing means comprises two hydraulically actuated pump assemblies and an auxiliary pump assembly.
Claim 17
Dependent Claim
12 words
The pump according to claim 9 including means for rotating said valve.
Claim 18
Dependent Claim
15 words
The pump according to claim l5 wherein said withdrawing means includes three hydraulic pump assemblies.
Claim 19
Dependent Claim
15 words
The pump according to claim 9 wherein said withdrawing means includes two hydraulic pump assemblies.
Claim 20
Dependent Claim
27 words
The pump according to claim 17 wherein said pump assemblies are mounted for pivotal movement on said frame and further including means for oscillating said pump assemblies.
References Cited (Backward Citations)
US2033338A
Cited
US3298322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |