US3629976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive-treating apparatus
Assignee: Pangborn Corp
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Filing: 1969-06-27
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Granted: 1971-12-28
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Expires: 1989-06-27
Abstract
Abstract A treating apparatus includes particle feed means which supplied treating particles, such as abrasive shot, to a nozzle under pressure. Metering means is disposed between the feed means and nozzle and is actuated by the pressure to open and close communication therebetween. The metering means includes a particle outlet extending from the feed means and having a defined geometric shape with a metering gate being in sliding contact with the outlet. The metering gate also has an opening of a defined geometric shape so that the degree of registry of the openings controls the amount of particle flow to the nozzle.
Inventors
- 👤 James H Carpenter Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:13
CPC Classifications
B; B24; B24C; B24C7/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A treating apparatus comprising particle feed means for storing and supplying treating particles, a treating nozzle communicating with said feed means, pressure means for pressurizing said feed means and said nozzle, metering means causing the selective communication of said nozzle with said feed means, said pressure means actuating the opening and closing of said metering means, said metering means including a particle outlet extending from said feed means, said outlet having an opening of defined geometric shape, a metering gate disposed in sliding contact with said outlet, said metering gate having an opening of a defined geometric shape whereby the degree of registry of said openings in said outlet and said gate controls the amount of particle flow from said feed means to said nozzle, one of said defined geometric shapes including a narrow leading surface with its opening becoming wider in a direction away from said leading surface, and said openings being disposed in the path of motion of each other in such a manner that at the beginning of registry of said openings said leading surface of one opening makes first registry with the other opening.
Claim 2
Dependent Claim
188 words
A treating apparatus comprising particle feed means for storing and supplying treating particles, a treating nozzle communicating with said feed means, pressure means for pressurizing said feed means and said nozzle, metering means causing the selective communication of said nozzle with said feed means, said pressure means actuating the opening and closing of said metering means, said metering means including a particle outlet extending from said feed means, said outlet having an opening of defined geometric shape, a metering gate disposed in sliding contact with said outlet, said metering gate having an opening of a defined geometric shape whereby the degree of registry of said openings in said outlet and said gate controls the amount of particle flow from said feed means to said nozzle, one of said defined geometric shapes including a narrow leading surface with its opening becoming wider in a direction away from said leading surface, and said openings being disposed in the path of motion of each other in such a manner that at the beginning of registry of said openings said leading surface of one opening makes first registry with the other opening.
Claim 3
Dependent Claim
26 words
An apparatus as set forth in claim 1 including adjusting means connected to said gate for limiting the maximum amount of particles flowing through its opening.
Claim 4
Dependent Claim
75 words
An apparatus as set forth in claim 2 including a metering chamber communicating with said nozzle, said metering means being in said metering chamber, closing means acting upon said metering gate to urge said metering gate toward a closed position, and opening means responsive to the pressure in said nozzle acting upon said metering gate to urge said metering gate toward an open position whereby sufficient pressure in said nozzle causes said gate to open.
Claim 5
Dependent Claim
20 words
An apparatus as set forth in claim 3 wherein said opening means includes a diaphragm connected to said metering gate.
Claim 6
Dependent Claim
40 words
An apparatus as set forth in claim 4 wherein said adjusting means includes an adjustable stop member in said chamber disposed in the path of motion of said metering gate when said metering gate is moving in its opening direction.
Claim 7
Dependent Claim
23 words
An apparatus as set forth in claim 5 including guide means in said chamber for maintaining said gate in contact with said outlet.
Claim 8
Dependent Claim
54 words
An apparatus as set forth in claim 6 wherein said diaphragm seals off a portion of said metering chamber, said closing means being a spring housed in said sealed-off portion, said stop member being a threaded rod extending into said sealed-off portion and having an exposed handle, and a vent in said sealed-off portion.
Claim 9
Dependent Claim
18 words
An apparatus as set forth in claim 7 wherein said openings are of the same defined geometric shape.
Claim 10
Dependent Claim
36 words
An apparatus as set forth in claim 8 wherein said guide means is a U-shaped spring with its legs disposed for straddling the opening of said gate, and said metering chamber tapering downwardly toward said nozzle.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |