Patent US3645459A successfully refreshed from Google Patents.
US3645459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for a roll crusher
Assignee: Fives Lille Cail
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Filing: 1970-03-02
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Granted: 1972-02-29
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Expires: 1990-03-02
Abstract
Abstract A peripheral crushing element is held in a dovetailed groove of a rotor by a prismatic wedge member which is interposed between one face of the crushing element and the tapering wall of the groove. The wedge member extends the length of the crushing element and has opposite walls in abutting engagement with the crushing element face and the groove wall, respectively. A key locks the wedge member to the crushing element into a unit for joint movement in an outward direction.
Inventors
- 👤 Robert Lucas
- 👤 Jean-Pierre Millier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:31
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28; B02C13/2804
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
227 words
In a crusher comprising a rotor mounted for rotation about an axis, a plurality of crushing elements projecting outwardly of the periphery of the rotor and disposed in axially elongated grooves extending lengthwise in the rotor periphery, each of the grooves being of dovetailed cross section having one elongated wall extending in a chordal plane of the rotor and another elongated wall tapering in an outward direction, each crushing element having a first face in abutting engagement with the one elongated wall of the groove wherein it is disposed and a second face opposite and substantially parallel thereto, a plurality of pin members fastening each of said crushing elements to the rotor, the pin members holding the first face of each crushing element in the abutting engagement with the one elongated wall of the groove wherein it is disposed, and wedge means interposed between the opposite face of each crushing element and the tapering wall of the groove wherein it is disposed, the improvement of each wedge means comprising a prismatic wedge member extending the length of the second face of the crushing element and the tapering wall of the groove and having opposite walls in abutting engagement with said second face and tapering wall, respectively, and key means locking the wedge member to the crushing element into a unit for joint movement in said outward direction.
Claim 2
Dependent Claim
227 words
In a crusher comprising a rotor mounted for rotation about an axis, a plurality of crushing elements projecting outwardly of the periphery of the rotor and disposed in axially elongated grooves extending lengthwise in the rotor periphery, each of the grooves being of dovetailed cross section having one elongated wall extending in a chordal plane of the rotor and another elongated wall tapering in an outward direction, each crushing element having a first face in abutting engagement with the one elongated wall of the groove wherein it is disposed and a second face opposite and substantially parallel thereto, a plurality of pin members fastening each of said crushing elements to the rotor, the pin members holding the first face of each crushing element in the abutting engagement with the one elongated wall of the groove wherein it is disposed, and wedge means interposed between the opposite face of each crushing element and the tapering wall of the groove wherein it is disposed, the improvement of each wedge means comprising a prismatic wedge member extending the length of the second face of the crushing element and the tapering wall of the groove and having opposite walls in abutting engagement with said second face and tapering wall, respectively, and key means locking the wedge member to the crushing element into a unit for joint movement in said outward direction.
Claim 3
Dependent Claim
73 words
In a crusher as set forth in claim 1, said element being formed with a radially elongated slot substantially T-shAped in cross section and open in a radially inward direction, said slot having a web part open toward said face and a flange part substantially parallel to said face, one of said pin members having a head portion received in said flange part and a stem portion partly received in said web part.
Claim 4
Dependent Claim
43 words
In a crusher as set forth in claim 2, said rotor being formed with a radially open slot, said stem portion being partly received in said slot, and securing means securing said pin member against longitudinal movement in said slot of the rotor.
Claim 5
Dependent Claim
32 words
In the crusher of claim 1, the key means being mounted in cooperating grooves in the second wall of the crushing element and one of the opposite walls of the wedge member.
Claim 6
Dependent Claim
77 words
In the crusher of claim 1, the crushing element being formed with a plurality of bores receiving the pin members, each bore having an enlarged orifice remote from the first face of the crushing element and at least partly covered by the wedge member, and each pin member having a head portion received in the orifice and a stem portion extending from the head portion through the first face and into the one wall of the groove.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |