US3790093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulator
Assignee: Leesona Corp
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Filing: 1971-11-18
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Granted: 1974-02-05
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Expires: 1991-11-18
Abstract
Abstract A granulator for synthetic plastic and other material such as cans made of thin steel or aluminum in which, instead of one screen to permit the exit from the machine of material cut to size, a second screen is also provided, the second screen being mounted adjacent the inlet side of the cutting element of the granulator and at the bottom of a vertical chute for feeding materials to the granulator.
Inventors
- 👤 J Mcintyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/14; B02C18/144; B02C18/148; B02C18/16; B02C18/18; B02C2018/188; B02C23/00; B02C23/08; B02C23/16; B02C2023/165
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
244 words
Apparatus for cutting material into small particles comprising, a chute having a first portion including an inlet for receiving said material for passage through said chute and a second portion offset from said first portion, said second portion being situated in a plane below said first portion whereby said material is conducted by gravity from said first portion to said second portion, rotor means in said second portion, means for driving said rotor means, said rotor means carrying a plurality of rotor knives, at least first and second bed knives secured in said second portion in spaced apart locations for cutting engagement with said rotor knives as said rotor means is driven, a first screen positioned in the path of the material moving from said inlet to said second portion, said first screen having openings of predetermined size therein, material conducted through said chute and having a dimension smaller than the openings in said first screen passing through said screen prior to entry into said second portion, the material not falling through said first screen passing over said screen and being cut by the action of said rotor knives and said first bed knife, and a second screen having openings of predetermined size therein disposed between said first bed knife and said second bed knife, said material passing between said rotor knives and said first bed knife and having a dimension smaller than the openings in said second screen passing through said second screen.
Claim 2
Dependent Claim
244 words
Apparatus for cutting material into small particles comprising, a chute having a first portion including an inlet for receiving said material for passage through said chute and a second portion offset from said first portion, said second portion being situated in a plane below said first portion whereby said material is conducted by gravity from said first portion to said second portion, rotor means in said second portion, means for driving said rotor means, said rotor means carrying a plurality of rotor knives, at least first and second bed knives secured in said second portion in spaced apart locations for cutting engagement with said rotor knives as said rotor means is driven, a first screen positioned in the path of the material moving from said inlet to said second portion, said first screen having openings of predetermined size therein, material conducted through said chute and having a dimension smaller than the openings in said first screen passing through said screen prior to entry into said second portion, the material not falling through said first screen passing over said screen and being cut by the action of said rotor knives and said first bed knife, and a second screen having openings of predetermined size therein disposed between said first bed knife and said second bed knife, said material passing between said rotor knives and said first bed knife and having a dimension smaller than the openings in said second screen passing through said second screen.
Claim 3
Dependent Claim
20 words
Apparatus as set forth in claim 1 wherein said openings of said first and second screens are the same size.
Claim 4
Dependent Claim
37 words
Apparatus as set forth in claim 1 wherein said rotor means when rotated acts to convey material not falling through said second screen to said second bed knife for further cutting and thence to said first screen.
Claim 5
Dependent Claim
46 words
Apparatus as set forth in claim 1 wherein said first bed knife is located below the axis of said rotor means, and said second bed knife is located between 135* and 180* away from the first bed knife about the cutting circle of said rotor knives.
Claim 6
Dependent Claim
29 words
Apparatus as set forth in claim 1 including an opening below the rotor means and the first and second screens in position to receive material passing through said screens.
Claim 7
Dependent Claim
46 words
Apparatus as set forth in claim 1 wherein said chute has a substantially vertically extending section, said second portion being disposed substantially horizontally from said vertically extending section, and said first screen forming a surface of curvature connecting said vertically extending section and said second portion.
Claim 8
Dependent Claim
19 words
Apparatus as set forth in claim 1 including means for adjusting said bed knives relative to said rotor knives.
Claim 9
Dependent Claim
23 words
Apparatus as set forth in claim 4 wherein said second screen spans substantially the entire distance between said first and second bed knives.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |