Patent US4067291A successfully refreshed from Google Patents.
US4067291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating system using tape encapsulated particulate coating material
Assignee: H B ZACHRY Co
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Filing: 1976-01-30
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Granted: 1978-01-10
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Expires: 1996-01-30
Abstract
Abstract A system for coating work pieces with particulate material is disclosed. A predetermined quantity of the particulate coating material is encapsulated per unit length of a polyethylene tape. The encapsulating tape is then moved at a controlled rate past a stripping station where the particulate material is stripped from the encapsulated tape and entrained in a gaseous stream. The gaseous stream injects the particulate material into a chamber having an open inlet in which the particulate material is both heated and accelerated to a high velocity for impacting a work piece and thus form a coating. In one embodiment of the invention, the particulate material is encapsulated in a plurality of discrete pockets, each containing a measured quantity of the particulate material. The particulate material is stripped from the package by pneumatic pressure and injected in the combustion chamber in timed sequence with ignition of a charge of combustible gases. In another embodiment of the invention, the particulate material is encapsulated in a continuous tubular system, and is continuously stripped from the tape and fed into a chamber in which the gases and particles are continually heated by combustion or an electric arc. In either embodiment, the particulate material may be stripped from the encapsulating tape either by pneumatic pressure or by mechanical means, or by a combination of both.
Inventors
- 👤 John Allen Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:59
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0006; C; C23; C23C; C23C4/00; C23C4/12; C23C4/129; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
117 words
The system for coating a work piece with particulate coating material comprising: means includng a chamber for producing hot gases within the chamber, the chamber having an open outlet for directing the hot gases against the work piece, an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, and stripping means outside the chamber for stripping the particulate material from the tape outside the chamber and then pneumatically transporting and injecting the particulate material into the chamber whereby the particulate materials will be heated by the gases in the chamber and accelerated by the gases escaping through the outlet and impacted against the surface of the work piece.
Claim 2
Independent Claim
117 words
The system for coating a work piece with particulate coating material comprising: means includng a chamber for producing hot gases within the chamber, the chamber having an open outlet for directing the hot gases against the work piece, an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, and stripping means outside the chamber for stripping the particulate material from the tape outside the chamber and then pneumatically transporting and injecting the particulate material into the chamber whereby the particulate materials will be heated by the gases in the chamber and accelerated by the gases escaping through the outlet and impacted against the surface of the work piece.
Claim 3
Dependent Claim
185 words
The system of claim 1 wherein the elongated tape forms a plurality of discrete capsules each containing a predetermined quantity of particulate material, the means including the chamber produces a series of pressure pusles within the chamber which causes the hot gases to exit through the outlet opening, the stripping means includes an inlet manifold having an inlet port and an outlet manifold having an outlet port communicating with the chamber for sequentially forming a seal around each of capsules when the tape is clamped between the manifolds, a source of pneumatic pressure greater than the maximum pressure reached in the chamber, first valve means between the source of pneumatic pressure and the inlet port for applying a pneumatic pulse to the inlet port whereby the pneumatic pulse will pass through the capsule and inject the particulate material into the chamber, and control means for operating the valve to apply the pulse of pneumatic pressure to the inlet port in a predetermined time relationship to the pressure pulses produced in the chamber such that particulate material is injected into the chamber during each pressure pulse.
Claim 4
Dependent Claim
111 words
The system of claim 2 wherein: the chamber is a combustion chamber, and further characterized by means for feeding a combustible mixture to the combustion chamber comprising means for producing a combustible fuel-air mixture and second valve means for introducing the fuel-air mixture to the combustion chamber, means for igniting the combustible mixture, and wherein the control means opens the second valve means to charge the combustion chamber with a fuel-air mixture, ignites the fuel-air mixture as the second valve means closes, and opens the first valve means to inject the particulate material into the combustion chamber while the pressure in the chamber is near the maximum pressure resulting from combustion.
Claim 5
Dependent Claim
83 words
The system of claim 3 wherein: the combustion chamber is generally spherical and the outlet opening is a nozzle having a diameter that is small compared to the diameter of the combustion chamber, the outlet port of the outlet manifold comprises an elongated tube extending into the interior of the combustion chamber, and the end of the tube may be adjustably positioned relative to the outlet opening to control the period of time the particulate material is heated by the gases of combustion.
Claim 6
Dependent Claim
65 words
The system of claim 1 wherein: the chamber is of the type which produces a continuous stream of hot gases passing through the outlet, and the stripping means includes means for progressively moving the elongated tape to the stripping station and for progressively pneumatically stripping the particulate material from the tape to thus continuously inject the particulate material into the chamber at a uniform rate.
Claim 7
Dependent Claim
29 words
The system of claim 5 wherein the stripping means includes means for mechanically progressively opening the elongated tape before the particulate material is progressively pneumatically stripped from the tape.
Claim 8
Dependent Claim
32 words
The system of claim 6 wherein the elongated tape is comprised of at least two film strips and the means for mechanically opening the tape comprising means for separating two film strips.
Claim 9
Dependent Claim
29 words
The system of claim 6 wherein the means for mechanically opening the tape comprises means for cutting the tape as the tape is progressively moved to the stripping station.
Claim 10
Dependent Claim
21 words
The system of claim 6 wherein the means for mechanically opening the tape comprises means for distorting and bursting the tape.
Claim 11
Dependent Claim
116 words
Apparatus for injecting particulate coating material into the heated gases of a system for coating a work piece with particulate material having means for heating the gases and directing the heated gases as a high velocity stream against a work piece which comprises: an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, and stripping means outside the heated gases for stripping the particulate material from the tape and pneumatically injecting the particulate material into the heated gases by means of a carrier gas whereby the particulate materials will be heated and accelerated by the heated gases as the heated gases are directed against the work piece.
Claim 12
Dependent Claim
116 words
Apparatus for injecting particulate coating material into the heated gases of a system for coating a work piece with particulate material having means for heating the gases and directing the heated gases as a high velocity stream against a work piece which comprises: an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, and stripping means outside the heated gases for stripping the particulate material from the tape and pneumatically injecting the particulate material into the heated gases by means of a carrier gas whereby the particulate materials will be heated and accelerated by the heated gases as the heated gases are directed against the work piece.
Claim 13
Dependent Claim
128 words
The apparatus of claim 10 wherein: the elongated tape forms a pluality of discrete capsules each containing a predetermined quantity of particulate material, and the stripping means includes an inlet manifold having an inlet port and an outlet manifold having an outlet port for communicating with a chamber through which the hot gases pass for sequentially forming a seal around each of the capsules when the tape is clamped between the manifolds, a source of pneumatic pressure greater than the pressure in the chamber, and first valve means for applying a pulse of gas from the pneumatic pressure source to the inlet port whereby the pulse of gas will pass through the capsule and act as a carrier gas to inject the particulate material into the heated gases.
Claim 14
Dependent Claim
47 words
The system of claim 10 wherein: the stripping mens includes means for continuously and progressively moving the elongated tape to the stripping station and for progressively pneumatically stripping the particulate material from the tape for substantially continuously injecting the particulate material into a continuous heated gaseous stream.
Claim 15
Dependent Claim
29 words
The system of claim 12 wherein the stripping means includes means for mechanically progressively opening the elongated tape before the particulate material is progressively pneumatically stripped from the tape.
Claim 16
Dependent Claim
32 words
The system of claim 13 wherein the elongated tape is comprised of at least two film strips and the means for mechanically opening the tape comprising means for separating two film strips.
Claim 17
Dependent Claim
29 words
The system of claim 13 wherein the means for mechanically opening the tape comprises means for cutting the tape as the tape is progressively moved to the stripping station.
Claim 18
Dependent Claim
23 words
The system of claim 13 wherein the means for mechanically opening the tape comprises means for distorting the tape until it bursts open.
Claim 19
Independent Claim
135 words
The system for coating a work piece with particulate coating material contained in an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, comprising: a chamber for producing hot gases having an open outlet for directing the hot gases against the work piece, a stripping station outside the chamber, means for feeding the tape to means stripping station at a controlled rate, and stripping mens at the stripping station for stripping the particulate material from the tape entraining the particulate material in a carrier gas stream, and injecting the carrier gas stream and particulate material entrained therein into the chamber whereby the particulate materials will be heated and accelerated by the hot gases escaping through the outlet and impacted against the surface of the work piece.
Claim 20
Independent Claim
135 words
The system for coating a work piece with particulate coating material contained in an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape, comprising: a chamber for producing hot gases having an open outlet for directing the hot gases against the work piece, a stripping station outside the chamber, means for feeding the tape to means stripping station at a controlled rate, and stripping mens at the stripping station for stripping the particulate material from the tape entraining the particulate material in a carrier gas stream, and injecting the carrier gas stream and particulate material entrained therein into the chamber whereby the particulate materials will be heated and accelerated by the hot gases escaping through the outlet and impacted against the surface of the work piece.
Claim 21
Dependent Claim
124 words
The system of claim 17 wherein the elongated tape forms a plurality of discrete capsules each containing a predetermined quantity of particulate material, and the stripping means comprises: an inlet manifold having an inlet port and an outlet manifold having an outlet port communicating with the chamber for sequentially forming a seal around each of capsules when the tape is clamped between the manifolds, a source of pneumatic pressure greater than the pressure in the chamber, and first valve means for applying a pulse of gas from the pneumatic pressure source to the inlet port whereby the pulse of gas will pass through the capsule to entrain the particulate material and act as a carrier gas to inject the particulate material into the chamber.
Claim 22
Dependent Claim
116 words
The system of claim 18 wherein the chamber is a combustion chamber, and further characterized by: means for feeding a combustible mixture to the combustion chamber comprising means for producing a combustible fuel-air mixture and second valve means for introducing the fuel-air mixture to the combustion chamber, means for igniting the combustible mixture, and control means for opening the second valve means to charge the combustion chamber with a fuel-air mixture, igniting the fuel-air mixture as the second valve means closes, and opening the first valve means to inject the carrier gas and the particulate material entrained therein into the combustion chamber while the pressure in the chamber is near the maximum pressuring resulting from combustion.
Claim 23
Dependent Claim
83 words
The system of claim 19 wherein: the combustion chamber is generally spherical and the outlet opening is a nozzle having a diameter that is small compared to the diameter of the combustion chamber, the outlet port of the outlet manifold comprises an elongated tube extending into the interior of the combustion chamber, and the end of the tube may be adjustably positioned relative to the outlet opening to control the period of time the particulate material is heated by the gases of combustion.
Claim 24
Dependent Claim
78 words
The system of claim 17 wherein: the chamber is of the type which produces a continuous stream of hot gases passing through the outlet, and the stripping means include means for continuously and progressively moving the elongated tape to the stripping station and for progressively pneumatically stripping the particulate material from the tape and entraining the particulate material in a continuous carrier gas stream to thus continuously inject the particulate material into the chamber at a uniform rate.
Claim 25
Dependent Claim
29 words
The system of claim 21 wherein the stripping means includes: means for mechanically progressively opening the elongated tape before the particulate material is progressively pneumatically stripped from the tape.
Claim 26
Dependent Claim
33 words
The system of claim 22 wherein the elongated tape is comprised of at least two film strips and the means for mechanically opening the tape comprises: means for separating the two film strips.
Claim 27
Dependent Claim
29 words
The system of claim 22 wherein the means for mechanically opening the tape comprises: means for cutting the tape as the tape is progressively moved to the stripping station.
Claim 28
Dependent Claim
21 words
The system of claim 22 wherein the means for mechanically opening the tape comprises means for distorting and bursting the tape.
Claim 29
Dependent Claim
160 words
Apparatus for injecting particulate coating material from an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape into the hot gas stream of a system for coating a work piece with particulate material having a chamber for producing hot gases which escape through an outlet opening at high velocity, said injecting apparatus comprises: a stripping station outside the chamber, means for feeding the elongated tape to the stripping station at a controlled rate, and stripping means for stripping the particulate material from the tape and entraining the particulate material in a carrier gas stream and then injecting the carrier gas stream and the particulate material entrained therein into the chamber whereby the pneumatic stream and particulate materials will be mixed with the hot gas stream and the particulate material will be heated and accelerated by the hot gases escaping through the outlet and impacted against the surface of the work piece.
Claim 30
Dependent Claim
160 words
Apparatus for injecting particulate coating material from an elongated tape having a predetermined quantity of particulate coating material encapsulated therein per unit length of the tape into the hot gas stream of a system for coating a work piece with particulate material having a chamber for producing hot gases which escape through an outlet opening at high velocity, said injecting apparatus comprises: a stripping station outside the chamber, means for feeding the elongated tape to the stripping station at a controlled rate, and stripping means for stripping the particulate material from the tape and entraining the particulate material in a carrier gas stream and then injecting the carrier gas stream and the particulate material entrained therein into the chamber whereby the pneumatic stream and particulate materials will be mixed with the hot gas stream and the particulate material will be heated and accelerated by the hot gases escaping through the outlet and impacted against the surface of the work piece.
Claim 31
Dependent Claim
117 words
The apparatus of claim 26 wherein the elongated tape forms a plurality of discrete capsules each containing a predetermined quantity of particulate material, and the stripping means comprises: an inlet manifold having an inlet port and an outlet manifold having an outlet port communicating with the chamber for sequentially forming a seal around each of the capsules, a source of pneumatic pressure greater than the pressure in the chamber, and first valve means for applying a pulse of gas from the pneumatic pressue source to the inlet port whereby the pulse of gas will pass through the capsule to entrain the particulate material and act as a carrier gas to inject the particulate material into the chamber.
Claim 32
Dependent Claim
45 words
The system of claim 26 wherein the means for feeding the elongated tape to the stripping station feeds the tape uninterruptively, and the stripping means progressively strips the particulate material from the tape and the carrier gas continuously injects the particulate material into the chamber.
Claim 33
Dependent Claim
29 words
The system of claim 28 wherein the stripping means includes means for mechanically progressively opening the elongated tape before the particulate material is progressively pneumatically stripped from the tape.
Claim 34
Dependent Claim
33 words
The system of claim 29 wherein the elongated tape is comprised of at least two film strips and the means for mechanically opening the tape comprising means for separating the two film strips.
Claim 35
Dependent Claim
29 words
The system of claim 29 wherein the means for mechanically opening the tape comprises means for cutting the tape as the tape is progressively moved to the stripping station.
Claim 36
Dependent Claim
24 words
The system of claim 29 wherein the means for mechanically opening the tape comprises means for distorting the tape until the tape bursts open.
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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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |