US3558067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding mill or the like having reinforced shell and method of making same
Assignee: Allis Chalmers Corp
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Filing: 1968-09-30
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Granted: 1971-01-26
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Expires: 1988-09-30
Abstract
Abstract A grinding mill or the like having a reinforced shell, and method of making same, including a shell formed of a cylindrical shell plate and having either radially outwardly or radially inwardly turned shell flanges. A cylindrical reinforcing plate is positioned contiguous each axial end of the shell plate and the corresponding shell flange to reinforce the shell in the high stress shell flange-shell plate region. The reinforcing plate or ring is integrally joined to the shell plate and to the shell flanges by a weld or welds, whereby the shell plate, the reinforcing ring members and the shell flanges form an integral structure.
Inventors
- 👤 Raymond C Jenness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
A grinding mill comprising a shell including a hollow cylindrical shell plate, a shell flange at an axial end of said shell, and a reinforcing ring axially interposed between and rigidly welded both to said shell flange and to said shell plate whereby to reinforce said shell in the high stress region at the axial end of said shell.
Claim 2
Dependent Claim
59 words
A grinding mill comprising a shell including a hollow cylindrical shell plate, a shell flange at an axial end of said shell, and a reinforcing ring axially interposed between and rigidly welded both to said shell flange and to said shell plate whereby to reinforce said shell in the high stress region at the axial end of said shell.
Claim 3
Dependent Claim
29 words
A grinding mill as defined in claim 1 in which said reinforcing ring is welded to said shell flange and to said shell plate by substantially fully penetrated welds.
Claim 4
Dependent Claim
22 words
A grinding mill as defined in claim 1 in which said reinforcing ring is of greater radial thickness than said shell plate.
Claim 5
Dependent Claim
59 words
A shell for a grinding mill comprising a hollow cylindrical shell plate, a shell flange at an axial end of said shell, and a reinforcing ring axially interposed between and rigidly welded both to said shell flange and to said shell plate whereby to reinforce said shell in the high stress region at the axial end of said shell.
Claim 6
Dependent Claim
59 words
A shell for a grinding mill comprising a hollow cylindrical shell plate, a shell flange at an axial end of said shell, and a reinforcing ring axially interposed between and rigidly welded both to said shell flange and to said shell plate whereby to reinforce said shell in the high stress region at the axial end of said shell.
Claim 7
Dependent Claim
32 words
A shell for a grinding mill as defined in claim 4 in which said reinforcing ring is welded to said shell flange and to said shell plate by substantially fully penetrated welds.
Claim 8
Dependent Claim
25 words
A shell for a grinding mill as defined in claim 4 in which said reinforcing ring is of greater radial thickness than said shell plate.
Claim 9
Independent Claim
100 words
A method of making a shell for a grinding mill of the type comprising a hollow cylindrical shell plate extending axially of said shell and a shell flange at an axial end of said shell, which comprises the step of rigidly welding to both said shell plate and to said shell flange and in axially interposed relation between an axial end of said shell plate and said shell flange a hollow cylindrical reinforcing ring of greater radial thickness than said shell plate, whereby to reinforce said shell in the high stress region between said shell plate and said shell flange.
Claim 10
Independent Claim
100 words
A method of making a shell for a grinding mill of the type comprising a hollow cylindrical shell plate extending axially of said shell and a shell flange at an axial end of said shell, which comprises the step of rigidly welding to both said shell plate and to said shell flange and in axially interposed relation between an axial end of said shell plate and said shell flange a hollow cylindrical reinforcing ring of greater radial thickness than said shell plate, whereby to reinforce said shell in the high stress region between said shell plate and said shell flange.
Claim 11
Dependent Claim
60 words
A method of making a shell as defined in claim 7 in which the step of rigidly joining said hollow cylindrical reinforcing ring to said shell plate and to said shell flange comprises welding said ring to said plate and to said flange by substantially fully penetrated welds whereby said ring, said plate, and said flange become an integral structure.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |