US3893578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for injecting particulate material into the combustion chamber of a repetitive combustion coating apparatus
Assignee: Southwest Research Institute
•
Filing: 1974-04-08
•
Granted: 1975-07-08
•
Expires: 1994-04-08
Abstract
Abstract A repetitive combustion system for coating a work piece with particulate material is disclosed which utilizes an encapsulating tape having a plurality of discrete capsules each containing a predetermined quantity of the particulate coating material. The capsules are sequentially fed into a stripping chamber where the tape is clamped between inlet and outlet manifolds which provide a circumferential seal around the respective capsules so that pressure can be applied to an inlet face of the capsule. The inlet face is so configured as to admit air into the interior of the capsule which then swells and bursts the outlet face or otherwise passes through the outlet faces. The air pressure then injects the particulate material into the combustion chamber while the pressure in the combustion chamber is near the peak produced by combustion. A number of different tape configurations are disclosed and also a number of different stripping stations designed to enhance scavenging of all of the particulate material from the capsules without entraining any of the material forming the capsules and to position the capsules to the station at a high rate. The coating apparatus includes a sequencing means which feeds the tape at a continuous rate through the stripping station and initiates introduction of a fuel-air mixture to the combustion chamber, ignition of the fuel-air mixture, and injection of the particulate material from the stripping station in the proper sequence. High speed rotary manifold systems for positioning these capsules at the stripping station are also disclosed.
Inventors
- 👤 Jr Rosser B Melton
- 👤 Elbert M Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:25
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/144; B05B7/0006; C; C23; C23C; C23C4/00; C23C4/12; C23C4/129; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
A system for injecting predetErmined quantities of particulate coating material into a chamber of hot gases which comprises: an elongated tape forming a plurality of discrete capsules each containing a predetermined quantity of particulate coating material, each capsule having an inlet face and an outlet face, an inlet manifold and an outlet manifold for sequentially clamping the tape to seal the inlet face from the outlet face, the outlet manifold having a chamber configured to permit expansion of the outlet face of each capsule and including an outlet port having an area less than the area of the outlet face of the capsule, the inlet manifold including valve means for applying a pneumatic pulse to the inlet face of the capsule of sufficiently higher pressure to pass through the inlet face and burst the outlet face thereby stripping the particulate material from the tape and propelling the particulate material out through the outlet port.
Claim 2
Independent Claim
154 words
A system for injecting predetErmined quantities of particulate coating material into a chamber of hot gases which comprises: an elongated tape forming a plurality of discrete capsules each containing a predetermined quantity of particulate coating material, each capsule having an inlet face and an outlet face, an inlet manifold and an outlet manifold for sequentially clamping the tape to seal the inlet face from the outlet face, the outlet manifold having a chamber configured to permit expansion of the outlet face of each capsule and including an outlet port having an area less than the area of the outlet face of the capsule, the inlet manifold including valve means for applying a pneumatic pulse to the inlet face of the capsule of sufficiently higher pressure to pass through the inlet face and burst the outlet face thereby stripping the particulate material from the tape and propelling the particulate material out through the outlet port.
Claim 3
Dependent Claim
36 words
The system of claim 1 wherein the outlet manifold is configured to restrain deformation of the outlet face of the capsule to limit bursting of the outlet face of the capsule except over the outlet port.
Claim 4
Dependent Claim
32 words
The system of claim 1 wherein each capsule is elongated, and the inlet manifold has an inlet port offset longitudinally of the elongated capsule from the outlet port of the outlet manifold.
Claim 5
Dependent Claim
28 words
The system of claim 1 wherein the inlet manifold includes means for piercing the inlet face of the capsule to permit the pneumatic pulse to enter the capsule.
Claim 6
Independent Claim
151 words
A system for injecting predetermined quantities of particulate coating material into a chamber from an elongated tape forming a plurality of discrete capsules, each encapsulating a predetermined quantity of particulate coating material, each capsule having an inlet face and an outlet face, said system comprising an inlet manifold and an outlet manifold for sequentially forming a seal between the inlet face from the outlet face of successive capsules, the outlet manifold having a chamber configured to permit expansion of the outlet face of each capsule and including and outlet port having an area less than the area of the outlet face, the inlet manifold including valve means for applying a pneumatic pulse to the inlet face of the pocket of sufficient magnitude to pass through the inlet face and burst the outlet face thereby stripping the particulate material from the tape and propelling the particulate material out through the outlet port.
Claim 7
Independent Claim
151 words
A system for injecting predetermined quantities of particulate coating material into a chamber from an elongated tape forming a plurality of discrete capsules, each encapsulating a predetermined quantity of particulate coating material, each capsule having an inlet face and an outlet face, said system comprising an inlet manifold and an outlet manifold for sequentially forming a seal between the inlet face from the outlet face of successive capsules, the outlet manifold having a chamber configured to permit expansion of the outlet face of each capsule and including and outlet port having an area less than the area of the outlet face, the inlet manifold including valve means for applying a pneumatic pulse to the inlet face of the pocket of sufficient magnitude to pass through the inlet face and burst the outlet face thereby stripping the particulate material from the tape and propelling the particulate material out through the outlet port.
Claim 8
Dependent Claim
36 words
The system of claim 5 wherein the outlet manifold is configures to restrain deformation of the outlet face of the capsule to limit bursting of the outlet face of the capsule except over the outlet port.
Claim 9
Dependent Claim
32 words
The system of claim 5 wherein each capsule is elongated, and the inlet manifold has an inlet port offset longitudinally of the elongated capsule from the outlet port of the outlet manifold.
Claim 10
Dependent Claim
28 words
The system of claim 5 wherein the inlet manifold includes means for piercing the inlet face of the capsule to permit the pneumatic pulse to enter the capsule.
Claim 11
Dependent Claim
39 words
The system of claim 5 wherein the inlet and outlet manifolds form an elongated chamber adapted to receive an elongated capsule, and the inlet manifold has an inlet port offset longitudinally from the outlet port of the outlet manifold.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |