Patent US3585758A successfully refreshed from Google Patents.
US3585758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous cleaning apparatus
Assignee: Pangborn Corp
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Filing: 1969-04-11
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Granted: 1971-06-22
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Expires: 1989-04-11
Abstract
Abstract A continuous treating apparatus such as used for the abrasive cleaning of castings includes a treating chamber which communicates with an infeed chamber and an exit chamber, at least one of which is tubular. A spiral article conveyor is mounted on the inner surface of the tubular chamber and a center tube or bridging element is disposed at the entrance of the tubular chamber and connected to the first flight of the spiral conveyor.
Inventors
- 👤 Willard J Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:50
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/18; B24C3/26; B24C3/266
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
A continuous treating apparatus comprising a treating chamber, treating means disposed adjacent said treating chamber for subjecting the articles in said treating chamber to a treating operation, an infeed chamber communicating with said treating chamber, an exit chamber communication with said treating chamber, at least one of said infeed chamber and said exit chamber being tubular, a spiral article conveyor mounted on the inner surface of said tubular chamber, means for rotating said tubular chamber and its spiral conveyor, at least the first flight of said spiral conveyor having an axial opening, and a bridging element disposed at the entrance of said tubular chamber and extending to said axial opening of said first flight and connected thereto to prevent the leading edge of said first flight from cutting through the articles being inserted into said tubular chamber.
Claim 2
Dependent Claim
137 words
A continuous treating apparatus comprising a treating chamber, treating means disposed adjacent said treating chamber for subjecting the articles in said treating chamber to a treating operation, an infeed chamber communicating with said treating chamber, an exit chamber communication with said treating chamber, at least one of said infeed chamber and said exit chamber being tubular, a spiral article conveyor mounted on the inner surface of said tubular chamber, means for rotating said tubular chamber and its spiral conveyor, at least the first flight of said spiral conveyor having an axial opening, and a bridging element disposed at the entrance of said tubular chamber and extending to said axial opening of said first flight and connected thereto to prevent the leading edge of said first flight from cutting through the articles being inserted into said tubular chamber.
Claim 3
Dependent Claim
22 words
An apparatus as set forth in claim 1 wherein said bridging element is a tubular section coaxially arranged with said tubular chamber.
Claim 4
Dependent Claim
49 words
An apparatus as set forth in claim 2 wherein said tubular section is connected to said first flight around a full 360* , said tubular section including a transmission section connected to the second flight of said spiral conveyor, and said transmission section tapering outwardly toward said second flight.
Claim 5
Dependent Claim
41 words
An apparatus as set forth in claim 3 wherein said second flight includes a cutaway portion terminating at said transmission section whereby articles may slide off said transmission section between said second flight and the third flight of said spiral conveyor.
Claim 6
Dependent Claim
19 words
An apparatus as set forth in claim 4 wherein said cutaway portion slopes downwardly away from said second flight.
Claim 7
Dependent Claim
34 words
An apparatus as set forth in claim 5 wherein each of said infeed chamber and said exit chamber is tubular and includes said spiral conveyor and said tubular bridging element with said transmission section.
Claim 8
Dependent Claim
48 words
An apparatus as set forth in claim 1 wherein said exit chamber is tubular and has said spiral article conveyor mounted on its inner surface, said bridging element being a center tube extending from the beginning of said exit chamber to the first flight of said spiral conveyor.
Claim 9
Dependent Claim
17 words
An apparatus as set forth in claim 7 wherein said center tube diverges toward said first flight.
Claim 10
Dependent Claim
17 words
An apparatus as set forth in claim 7 wherein said center tube converges toward said first flight.
Claim 11
Dependent Claim
21 words
An apparatus as set forth in claim 7 wherein a damming element is disposed at the beginning of said exit chamber.
Claim 12
Dependent Claim
56 words
An apparAtus as set forth in claim 7 wherein said treating chamber includes an endless flexible conveyor drive, said center tube being disposed against said flexible conveyor drive to impart an arcuate shape to a portion of said flexible conveyor drive, said means for rotating said tubular chamber also being rotation means for said treating chamber.
Claim 13
Dependent Claim
89 words
An apparatus as set forth in claim 7 wherein said treating chamber includes an endless flexible conveyor drive, a floating ring being disposed against said flexible conveyor drive to impart an arcuate shape to a portion of said flexible conveyor drive, rotation means for rotating said treating chamber, said center tube being disposed around and spaced from said floating ring, and said means for rotating said tubular chamber being independent of said treating chamber rotation means whereby said treating chamber and said exit chamber may rotate at different speeds.
Claim 14
Dependent Claim
84 words
An apparatus as set forth in claim 12 wherein a further floating ring is disposed against said flexible drive conveyor adjacent said infeed chamber, said infeed chamber being tubular and having a spiral article conveyor mounted on its inner surface, said tubular infeed chamber being disposed around and spaced from said further floating ring, infeed rotation means for rotating said infeed chamber, and said infeed rotation means being independent of said treating chamber rotation means and of said means for rotating said exit chamber.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |