US3716304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pump
Assignee: Mancole Co Ltd
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Filing: 1970-09-14
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Granted: 1973-02-13
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Expires: 1990-09-14
Abstract
Abstract A pair of alternately reciprocal auger pumps fed by a common hopper and discharging concrete or the like into a common manifold. A clearance auger rotates considerably faster than the pump unit auger assemblies and clears the concrete from the manifold into the discharge conduit. Sections of the pump auger flights at the front ends thereof hinge to close off the ends when on the pumping stroke thus forming the auger flights into pistons.
Inventors
- 👤 M Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F04B1/00; F04B1/02; F04B19/00; F04B19/08; F04B19/12; F04B53/00; F04B53/14; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111; F04B9/115; F04B9/117; F04B9/1172; F04D; F04D3/00; F04D3/02; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, at least one pump unit mounted on said frame, a manifold connecting one end of said pump unit to a discharge conduit, an hydraulic piston and cylinder assembly for said pump unit operatively connected to said source of power and adapted to reciprocate said pump unit on a pumping stroke and a non-pumping stroke, a hopper communicating with said pump unit, a clearance assembly within said manifold and said discharge conduit, said pump unit including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of said auger flight assembly adjacent said manffold, said valve means closing when said auger flight assembly is on the pumping stroke and opening when said auger flight assembly is on the non-pumping stroke.
Claim 2
Dependent Claim
145 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, at least one pump unit mounted on said frame, a manifold connecting one end of said pump unit to a discharge conduit, an hydraulic piston and cylinder assembly for said pump unit operatively connected to said source of power and adapted to reciprocate said pump unit on a pumping stroke and a non-pumping stroke, a hopper communicating with said pump unit, a clearance assembly within said manifold and said discharge conduit, said pump unit including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of said auger flight assembly adjacent said manffold, said valve means closing when said auger flight assembly is on the pumping stroke and opening when said auger flight assembly is on the non-pumping stroke.
Claim 3
Dependent Claim
145 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, at least one pump unit mounted on said frame, a manifold connecting one end of said pump unit to a discharge conduit, an hydraulic piston and cylinder assembly for said pump unit operatively connected to said source of power and adapted to reciprocate said pump unit on a pumping stroke and a non-pumping stroke, a hopper communicating with said pump unit, a clearance assembly within said manifold and said discharge conduit, said pump unit including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of said auger flight assembly adjacent said manffold, said valve means closing when said auger flight assembly is on the pumping stroke and opening when said auger flight assembly is on the non-pumping stroke.
Claim 4
Dependent Claim
145 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, at least one pump unit mounted on said frame, a manifold connecting one end of said pump unit to a discharge conduit, an hydraulic piston and cylinder assembly for said pump unit operatively connected to said source of power and adapted to reciprocate said pump unit on a pumping stroke and a non-pumping stroke, a hopper communicating with said pump unit, a clearance assembly within said manifold and said discharge conduit, said pump unit including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of said auger flight assembly adjacent said manffold, said valve means closing when said auger flight assembly is on the pumping stroke and opening when said auger flight assembly is on the non-pumping stroke.
Claim 5
Dependent Claim
32 words
The device according to claim 1 in which said auger flight assembly is operatively connected to said source of power and to said hopper, said auger flight assembly communicating with said manifold.
Claim 6
Dependent Claim
75 words
The device according to claim 1 in which said clearance assembly includes a shaft journalled for rotation and extending upwardly and forwardly through said manifold and into said discharge conduit, a first auger flight section on said shaft within said manifold and a second auger flight section on said shaft spaced from said first auger flight section and situated within the discharge conduit, said clearance assembly rotating faster than said pump unit auger flight assembly.
Claim 7
Dependent Claim
75 words
The device according to claim 2 in which said clearance assembly includes a shaft journalled for rotation and extending upwardly and forwardly through said manifold and into said discharge conduit, a first auger flight section on said shaft within said manifold and a second auger flight section on said shaft spaced from said first auger flight section and situated within the discharge conduit, said clearance assembly rotating faster than said pump unit auger flight assembly.
Claim 8
Dependent Claim
161 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, a pair of side by side pump units mounted on said frame, a common manifold connecting one end of each of said pump units to a discharge conduit, an hydraulic piston and cylinder assembly for each of said pump units operatively connected to said source of power and adapted to reciprocate said pump units alternately on a pumping stroke and a non-pumping stroke, a hopper communicating with both of said pump units, and a clearance assembly within said manifold and said discharge conduit, each of said pump units including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of each of said auger flight assemblies adjacent said manifold, said valve means closing when said auger flight assemblies are on the pumping stroke and opening when said auger flight assemblies are on the non-pumping stroke.
Claim 9
Dependent Claim
161 words
A concrete pump comprising in combination a supporting frame, a source of power on said frame, a pair of side by side pump units mounted on said frame, a common manifold connecting one end of each of said pump units to a discharge conduit, an hydraulic piston and cylinder assembly for each of said pump units operatively connected to said source of power and adapted to reciprocate said pump units alternately on a pumping stroke and a non-pumping stroke, a hopper communicating with both of said pump units, and a clearance assembly within said manifold and said discharge conduit, each of said pump units including a cylindrical casing and an auger flight assembly rotatable and reciprocal in said casing and valve means on the end of each of said auger flight assemblies adjacent said manifold, said valve means closing when said auger flight assemblies are on the pumping stroke and opening when said auger flight assemblies are on the non-pumping stroke.
Claim 10
Dependent Claim
32 words
The device according to claim 5 in which said auger flight assemblies are operatively connected to said source of power and to said hopper, said auger flight assemblies communicating with said manifold.
Claim 11
Dependent Claim
103 words
The device according to claim 5 which includes flap valve means in said manifold closing off said pumping units alternately on the non-pumping strokes and opening said pumping units to said manifold on the pumping strokes, and means operatively connected between said pump units whereby the pumping stroke of one unit withdraws the auger flight assembly of the other unit and vice versa, and means including a sheave journalled for rotation near the rear end of said pumping units, a cable extending around said sheave and being connected by the ends thereof to each of the rods of said piston and cylinder assemblies.
Claim 12
Dependent Claim
103 words
The device according to claim 6 which includes flap valve means in said manifold closing off said pumping units alternately on the non-pumping strokes and opening said pumping units to said manifold on the pumping strokes, and means operatively connected between said pump units whereby the pumping stroke of one unit withdraws the auger flight assembly of the other unit and vice versa, said means including a sheave journalled for rotation near the rear end of said pumping units, a cable extending around said sheave and being connected by the ends thereof to each of the rods oF said piston and cylinder assemblies.
Claim 13
Dependent Claim
80 words
The device according to claim 5 in which said clearance assembly includes a shaft journalled for rotation and extending upwardly and forwardly through said manifold and into said discharge conduit, centrally between said pumping units, a first auger flight section on said shaft within said manifold and a second auger flight section on said shaft spaced from said first auger flight section and situated within the discharge conduit, said clearance assembly rotating faster than said pump unit auger flight assemblies.
Claim 14
Dependent Claim
80 words
The device according to claim 6 in which said clearance assembly includes a shaft journalled for rotation and extending upwardly and forwardly through said manifold and into said discharge conduit, centrally between said pumping units, a first auger flight section on said shaft within said manifold and a second auger flight section on said shaft spaced from said first auger flight section and situated within the discharge conduit, said clearance assembly rotating faster than said pump unit auger flight assemblies.
Claim 15
Dependent Claim
79 words
The device according to claim 7 in which said clearance assembly includes a shaft journalled for rotation and extending upwardly and forwardly through said manifold and into said discharge conduit, centrally between said pumping units, a first auger flight section on said shaft spaced from said first auger flight section and situated within the discharge conduit, said clearance assembly rotating faster than said pump unit auger flight assemblies, said first auger flight section being forwardly of said flap valve.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |