US3779519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete placement
Assignee: Tetradyne Corp
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Filing: 1971-06-07
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Granted: 1973-12-18
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Expires: 1991-06-07
Abstract
Abstract A system is provided for delivering a settable concrete mixture to a placement point which includes a gas-solids delivery system for transporting dry cementitious material and suitable aggregate to a water addition zone, and thereafter it carries the cementitious material and water to a deceleration and mixing zone having its outlet positioned over the placement point. The deceleration and mixing zone causes the gas-solids stream to agitate as it decelerates and thereby thoroughly blends the concrete constituents to form a settable mixture, which drops from the opening on the predetermined concrete placement point.
Inventors
- 👤 F Mueller
- 👤 N Osborn
- 👤 R Anderson
- 👤 R Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/02; B28C5/06; B28C7/00; B28C7/04; B28C7/0481; B28C7/0486
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A method of delivering a cementitious material to a placement point comprising: a. entraining a mixture of water, cement and aggregate in a gas stream; b. introducing said gas stream carrying said mixture tangentially into and enclosed, deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly toward said outlet in a spiral path in said deceleration and mixing zone thereby thoroughly blending and decelerating said mixture to form said cementitious material; and c. allowing said cementitious material to drop from said opening upon said placement point.
Claim 2
Independent Claim
96 words
A method of delivering a cementitious material to a placement point comprising: a. entraining a mixture of water, cement and aggregate in a gas stream; b. introducing said gas stream carrying said mixture tangentially into and enclosed, deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly toward said outlet in a spiral path in said deceleration and mixing zone thereby thoroughly blending and decelerating said mixture to form said cementitious material; and c. allowing said cementitious material to drop from said opening upon said placement point.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said mixture is decelerated to the gravitational velocity thereof.
Claim 4
Independent Claim
130 words
The method of delivering a mixture of cementitious material to a placement point comprising: a. entraining a settable material comprising a hydratable cement in a gas stream; b. passing said gas stream containing said material through a water addition zone wherein sufficient water is added thereto to cause hydration of said cement; c. introducing said gas stream carrying the resulting mixture of water and cement material tangentially into an enclosed deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly in a spiral path in said zone toward said outlet thereby thoroughly blending and decelerating said mixture and forming said mixture of cementitious material; and d. allowing said mixture of cementitious material to drop from said outlet upon said placement point.
Claim 5
Independent Claim
130 words
The method of delivering a mixture of cementitious material to a placement point comprising: a. entraining a settable material comprising a hydratable cement in a gas stream; b. passing said gas stream containing said material through a water addition zone wherein sufficient water is added thereto to cause hydration of said cement; c. introducing said gas stream carrying the resulting mixture of water and cement material tangentially into an enclosed deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly in a spiral path in said zone toward said outlet thereby thoroughly blending and decelerating said mixture and forming said mixture of cementitious material; and d. allowing said mixture of cementitious material to drop from said outlet upon said placement point.
Claim 6
Dependent Claim
15 words
The method of claim 3 wherein said mixture is decelerated to the gravitational velocity thereof.
Claim 7
Independent Claim
137 words
A method of delivering a mixture of cementitious material including water and a hydratable cement as two ingredients thereof to a placement point comprising: a. entraining one of said ingredients in a gas stream; b. passing said gas stream to an injection zone wherein the other of said two ingredients is added thereto, and thereby forming a mixture of said two ingredients entrained within said gas stream; c. introducing said gas stream carrying said mixture tangentially into an enclosed deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly in a spiral path in said zone toward said outlet thereby thoroughly blending and decelerating said mixture and forming said mixture to cementitious material; and d. allowing said cementitious material to drop from said opening upon said placement point.
Claim 8
Independent Claim
137 words
A method of delivering a mixture of cementitious material including water and a hydratable cement as two ingredients thereof to a placement point comprising: a. entraining one of said ingredients in a gas stream; b. passing said gas stream to an injection zone wherein the other of said two ingredients is added thereto, and thereby forming a mixture of said two ingredients entrained within said gas stream; c. introducing said gas stream carrying said mixture tangentially into an enclosed deceleration and mixing zone having an outlet positioned over said placement point to cause said mixture to rotate downwardly in a spiral path in said zone toward said outlet thereby thoroughly blending and decelerating said mixture and forming said mixture to cementitious material; and d. allowing said cementitious material to drop from said opening upon said placement point.
Claim 9
Dependent Claim
33 words
The method of claim 5 wherein the first ingredient which is added to said gas stream is said hydratable cement and the second ingredient which is added to said gas stream is water.
Claim 10
Dependent Claim
25 words
The method of claim 5 further comprising entraining aggregate into said gas stream prior to passing said stream into said enclosed deceleration and mixing zone.
Claim 11
Independent Claim
146 words
A method of delivering a mixture of cementitious material including water and a hydratable cement as two ingredients thereof to a placement point comprising: a. entraining one of said ingredients in a gas stream; b. passing said gas stream to an injection zone wherein the other of said two ingredients is added thereto, and thereby forming a mixture of said two ingredients entrained within said gas stream; c. introducing said gas stream carrying said mixture transversely into a vertically elongated enclosed deceleration and mixing zone having an outlet positioned over said placement point and imparting rotating motion to said mixture thereby causing it to rotate and move downwardly in a spiral path within said zone toward said outlet, thereby blending and decelerating said mixture and forming said mixture of cementitious material; and d. allowing said cementitious material to drop from said opening upon said placement point.
Claim 12
Independent Claim
146 words
A method of delivering a mixture of cementitious material including water and a hydratable cement as two ingredients thereof to a placement point comprising: a. entraining one of said ingredients in a gas stream; b. passing said gas stream to an injection zone wherein the other of said two ingredients is added thereto, and thereby forming a mixture of said two ingredients entrained within said gas stream; c. introducing said gas stream carrying said mixture transversely into a vertically elongated enclosed deceleration and mixing zone having an outlet positioned over said placement point and imparting rotating motion to said mixture thereby causing it to rotate and move downwardly in a spiral path within said zone toward said outlet, thereby blending and decelerating said mixture and forming said mixture of cementitious material; and d. allowing said cementitious material to drop from said opening upon said placement point.
Claim 13
Dependent Claim
22 words
The method of claim 8 wherein the first of said two ingredients which is added to said gas stream is hydratable cement.
Claim 14
Dependent Claim
25 words
The method of claim 8 further comprising entraining aggregate into said gas stream prior to introducing said stream into said enclosed deceleration and mixing zone.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |