US3672646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic cement gun machine
Assignee: Detroit Tool and Engineering Co
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Filing: 1971-04-15
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Granted: 1972-06-27
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Expires: 1991-04-15
Abstract
Abstract A cement gun machine has a hopper subtended by a rotary transport bowl which is divided into radial compartments. The bowl receives dry cement mixture from the hopper, and moves it to a station where the mixture is pneumatically discharged into a delivery hose. A hood structure within the hopper traps cement dust and prevents it from escaping into the ambient atmosphere. Means are provided for introducing measured quantities of accelerator material into the cement mixture in the transport bowl.
Inventors
- 👤 James D Burtin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:45
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/10; B28C5/12; B28C5/1238; B28C5/1253; B28C5/1261; B28C7/00; B28C7/04; B28C7/0454; B28C7/0459; B28C7/0468; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4608; B65G53/4616; G; G01; G01F; G01F11/00; G01F11/10; G01F11/12; G01F11/20; G01F11/24
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
80 words
A cement gun machine comprising: a. a hopper for cement mixture, b. a rotary transport bowl underlying the hopper, c. drive means for said transport bowl, d. a discharge tube, e. pneumatic means for expelling cement from said bowl into said discharge tube, and f. a hood within said hopper providing a substantially closed chamber above the transport bowl, said bowl preventing air from said pneumatic means from escaping upwardly through the body of said cement mixture in said hopper.
Claim 2
Dependent Claim
80 words
A cement gun machine comprising: a. a hopper for cement mixture, b. a rotary transport bowl underlying the hopper, c. drive means for said transport bowl, d. a discharge tube, e. pneumatic means for expelling cement from said bowl into said discharge tube, and f. a hood within said hopper providing a substantially closed chamber above the transport bowl, said bowl preventing air from said pneumatic means from escaping upwardly through the body of said cement mixture in said hopper.
Claim 3
Dependent Claim
18 words
A cement gun machine as set forth in claim 1 including an exhaust pipe communicating with said chamber.
Claim 4
Dependent Claim
50 words
A cement gun as set forth in claim 1, wherein: the transport bowl includes partitioning means defining radial, U-shaped pockets subtending inner and outer rings of openings, said hood having wall portions defining a chute for conducting cement mixture to the transport bowl through its said outer ring of openings.
Claim 5
Dependent Claim
67 words
The cement gun of claim 1 wherein said hood has a top wall having a central opening, an upstanding collar on said top wall extending around said opening, an agitator post extending vertically from said transport bowl and through said collar, a closure cap surrounding said collar, mounted on said agitator post, and agitator blades carried by said post and overlying the top wall of the hood.
Claim 6
Dependent Claim
42 words
The cement gun machine of claim 1 wherein said hood includes wall portions forming a chute at one side of the hopper, leading to the transport bowl, and wall portions at the opposite side of the hopper defining a cement discharging compartment.
Claim 7
Dependent Claim
36 words
A cement gun machine as set forth in claim 1 including an auxiliary hopper for accelerator material, said auxiliary hopper being adapted and arranged to release accelerator material therefrom to the cement mixture in the machine.
Claim 8
Dependent Claim
29 words
A cement gun machine as set forth in claim 6 wherein said auxiliary hopper is provided with agitator means operatively connected to the drive means for the transport bowl.
Claim 9
Dependent Claim
32 words
A cement gun machine as set forth in claim 1, including an auxiliary hopper for cement accelerator material, and a conduit for conducting material from said auxiliary hopper into the transport bowl.
Claim 10
Dependent Claim
27 words
A cement gun machine as set forth in claim 8, including means operatively connected to the transport bowl for controlling the flow of accelerator material delivered thereto.
Claim 11
Dependent Claim
75 words
A cement gun machine comprising: a. a hopper for dry cement mixture, b. a rotary transport bowl below the hopper, c. drive means for said transport bowl, d. means forming a chute for conducting mixture from the hopper to said transport bowl, e. pneumatic means for discharging Mixture from the bowl, f. an auxiliary hopper for cement accelerator material, g. and conduit means for conducting accelerator material from said auxiliary hopper to the transport bowl.
Claim 12
Dependent Claim
75 words
A cement gun machine comprising: a. a hopper for dry cement mixture, b. a rotary transport bowl below the hopper, c. drive means for said transport bowl, d. means forming a chute for conducting mixture from the hopper to said transport bowl, e. pneumatic means for discharging Mixture from the bowl, f. an auxiliary hopper for cement accelerator material, g. and conduit means for conducting accelerator material from said auxiliary hopper to the transport bowl.
Claim 13
Dependent Claim
25 words
The cement gun machine set forth in claim 10 including means for controlling the flow of accelerator material from said container to the transport bowl.
Claim 14
Dependent Claim
28 words
The cement gun as set forth in claim 11 wherein the flow control means for accelerator material is operatively connected to the drive means for said transport bowl.
Claim 15
Dependent Claim
38 words
The cement gun machine as set forth in claim 10 wherein said conduit means conducts accelerator material into the transport bowl at a point adjacent to the point of discharge of the cement mixture from the transport bowl.
Claim 16
Dependent Claim
95 words
A cement gun machine comprising: a. a main hopper for cement mixture, b. a rotary transport bowl, c. drive means for rotating said transport bowl, d. passage means for conducting mixture from said hopper into the transport bowl, e. pneumatic means for expelling the cement mixture from said transport bowl, f. an auxiliary hopper for holding accelerator material to be added to the cement mixture in the machine, g. and valve means operatively connected to said drive means for coordinating the rate of flow of cement accelerator material with the rotation of said transport bowl.
Claim 17
Dependent Claim
95 words
A cement gun machine comprising: a. a main hopper for cement mixture, b. a rotary transport bowl, c. drive means for rotating said transport bowl, d. passage means for conducting mixture from said hopper into the transport bowl, e. pneumatic means for expelling the cement mixture from said transport bowl, f. an auxiliary hopper for holding accelerator material to be added to the cement mixture in the machine, g. and valve means operatively connected to said drive means for coordinating the rate of flow of cement accelerator material with the rotation of said transport bowl.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |