Patent US4214716A successfully refreshed from Google Patents.
US4214716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulverizer
Assignee: Individual
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Filing: 1978-09-28
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Granted: 1980-07-29
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Expires: 1998-09-28
Abstract
Abstract This invention relates to pulverizers of the kind comprising a barrel having an inlet for material to be pulverized, an outlet, an upright rotor rotatable within the barrel and a plurality of hammers mounted on the rotor. Apparatus according to the invention is provided with a double shell barrel having an inner shell spaced radially from the outer shell by tubular braces which also serve to mount striker blades. Preferably the striker blades are longitudinally adjustable and preferably the hammers are swing mounted.
Inventors
- 👤 Michel A. Jadouin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:45
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/08; B02C13/00; B02C13/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A pulveriser of the kind comprising a barrel having an open top for infeed of material to be pulverised and a bottom outlet for departure of pulverised material, an upright rotor rotatable within the barrel and a plurality of hammers mounted on the rotor; characterised in that a plurality of stationary blades are cantilevered to project inwardly from the barrel wall so as to be out of contact with the hammers, said barrel comprises an inner shell spaced radially from an outer shell and enclosed by the latter, a plurality of bracing tubes extend radially from one shell to the other and supported by both, and said stationary blades are at least partially housed by said bracing tubes whereby said stationary blades are braced against lateral forces.
Claim 2
Dependent Claim
127 words
A pulveriser of the kind comprising a barrel having an open top for infeed of material to be pulverised and a bottom outlet for departure of pulverised material, an upright rotor rotatable within the barrel and a plurality of hammers mounted on the rotor; characterised in that a plurality of stationary blades are cantilevered to project inwardly from the barrel wall so as to be out of contact with the hammers, said barrel comprises an inner shell spaced radially from an outer shell and enclosed by the latter, a plurality of bracing tubes extend radially from one shell to the other and supported by both, and said stationary blades are at least partially housed by said bracing tubes whereby said stationary blades are braced against lateral forces.
Claim 3
Dependent Claim
29 words
A pulveriser according to claim 1 wherein the extent to which at least some of said stationary blades project from said bracing tubes inwardly into said barrel is adjustable.
Claim 4
Dependent Claim
18 words
A pulveriser according to claim 1 or claim 2, wherein said hammers are pivotally mounted on said rotor.
Claim 5
Dependent Claim
42 words
A pulveriser according to claim 1 or claim 2, wherein the extent to which the hammers project from the rotor varies from hammer to hammer with at least one upper hammer projecting to a lesser extent than at least one lower hammer.
Claim 6
Dependent Claim
22 words
A pulveriser according to claim 1 or claim 2, wherein at least some of said hammers are in the form of discs.
Claim 7
Dependent Claim
45 words
A pulveriser according to claim 1 or claim 2, provided in addition with an outlet fitted with a hinged flap closure, said flap being normally closed by bias means, whereby objects likely to jam the pulveriser may by-pass the main working space of the pulveriser.
Claim 8
Dependent Claim
46 words
A pulveriser according to claim 6 having sensor means for detecting the opening of said hinged flap to a pre-determined opening angle and control ram means connected to said sensor means to cause said stationary blades to be retracted from said barrel by a pre-determined amount.
Claim 9
Dependent Claim
43 words
A pulveriser according to claim 1 wherein at least some of said stationary blades project adjustably inwardly from the barrel wall and wherein locking piece means is provided to hold said blades in one or another of a plurality of their adjusted positions.
Claim 10
Dependent Claim
27 words
A pulveriser according to claim 1 wherein some of said blades are mounted for inward adjustment, and pressure actuated ram means is provided for effecting such adjustment.
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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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |