US3724767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shredder-grinder machine having an improved rotor
Assignee: PIQUA ENG Inc
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Filing: 1971-10-07
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Granted: 1973-04-03
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Expires: 1991-10-07
Abstract
Abstract A mobile chipper includes a housing which supports a feed roll positioned above a guide chute extending to a rotor having a series of axially spaced circular rotor plates rigidly secured to a driven rotor shaft. Each of the rotor plates is formed of a heavy gauge sheet metal and has a first segment which is integrally connected by a transverse portion to an axially offset second segment extending parallel to the first segment. A series of peripherally spaced shaft members extend axially through a segments of the rotor plates, and a plurality of hammer elements are mounted on each shaft member between the rotor plates for full 360* rotation. One of the hammer elements is positioned adjacent the first segment of each rotor plate in radial alignment with the second segment, and another hammer element is positioned adjacent the second segment of each rotor plate in radial alignment with the first segment. These hammer elements cooperate with other hammer elements so that the rotary paths of all of the hammer elements are continuous and uninterrupted across the width of the guide chute. Shredded material is discharged from the housing by the cooperation of a driven screw which extends to a centrifugal blower.
Inventors
- 👤 J Scarbrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:57
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/002; B; B02; B02C; B02C13/00; B02C13/02; B02C13/04; B02C13/26; B02C13/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
An improved hammermill rotor adapted for use on a chipping and shredding machine, comprising a main support shaft, a plurality of plate members mounted on said shaft in axially spaced relation, each said plate member having a substantially uniform thickness and including first and second portions disposed in axially offset relation, a plurality of peripherally spaced shaft members extending axially through said offset portions of said plate members, a plurality of hammer elements supported by said shaft members for freely rotating movement between said plate members, and at least some of said hammer elements are located adjacent said first portions of said plate members and are generally radially aligned with said second portions of the corresponding said plate members.
Claim 2
Dependent Claim
119 words
An improved hammermill rotor adapted for use on a chipping and shredding machine, comprising a main support shaft, a plurality of plate members mounted on said shaft in axially spaced relation, each said plate member having a substantially uniform thickness and including first and second portions disposed in axially offset relation, a plurality of peripherally spaced shaft members extending axially through said offset portions of said plate members, a plurality of hammer elements supported by said shaft members for freely rotating movement between said plate members, and at least some of said hammer elements are located adjacent said first portions of said plate members and are generally radially aligned with said second portions of the corresponding said plate members.
Claim 3
Dependent Claim
38 words
A rotor as defined in claim 1 wherein said offset first and second portions of each said plate member are integrally connected by an intermediate portion which extends transversely of said shaft and forms an acute angle therewith.
Claim 4
Dependent Claim
42 words
A rotor as defined in claim 1 wherein at least some of said hammer elements are located adjacent the corresponding said second portions of said plate members and are generally radially aligned with said first portions of the corresponding said plate members.
Claim 5
Dependent Claim
21 words
A rotor as defined in claim 1 wherein each of said plate members including said offset portions is circular in configuration.
Claim 6
Dependent Claim
24 words
A rotor as defined in claim 1 wherein said first and second portions of each said plate member comprise segments of said plate member.
Claim 7
Dependent Claim
22 words
A rotor as defined in claim 5 wherein said offset segments of each said plate member are disposed in diametrically opposed relation.
Claim 8
Dependent Claim
35 words
A rotor as defined in claim 1 wherein said shaft members are arranged relative to said offset portions of said plate members to provide for full 360* rotary movement of the adjacent said hammer elements.
Claim 9
Dependent Claim
115 words
An improved hammermill rotor adapted for use on a chipping and shredding machine, comprising a main support shaft, a plurality of sheet metal plates mounted on said shaft in axially spaced relation, each said plate including generally planar and radially extending first and second segments disposed in axially offset relation, a plurality of peripherally spaced shaft members extending through said segments of said plates parallel to said main support shaft, a plurality of hammers supported by said shaft members for freely swinging movement between said plates, and one of said hammers being located adjacent each said segment of each said plate and generally radially aligned with the other said segment of the corresponding said plate.
Claim 10
Dependent Claim
115 words
An improved hammermill rotor adapted for use on a chipping and shredding machine, comprising a main support shaft, a plurality of sheet metal plates mounted on said shaft in axially spaced relation, each said plate including generally planar and radially extending first and second segments disposed in axially offset relation, a plurality of peripherally spaced shaft members extending through said segments of said plates parallel to said main support shaft, a plurality of hammers supported by said shaft members for freely swinging movement between said plates, and one of said hammers being located adjacent each said segment of each said plate and generally radially aligned with the other said segment of the corresponding said plate.
Claim 11
Dependent Claim
43 words
A rotor as defined in claim 8 wherein said first and second segments of each said plate are disposed in diametrically opposed relation, and said shaft members are arranged relative to said segments to provide for full 360* rotation of each said hammer.
Claim 12
Dependent Claim
45 words
A rotor as defined in claim 8 wherein some of said hammers are spaced between said segments of said plates and cooperate with said hammers adjacent said segments of said plates to provide a continuous array of hammer paths along the length of said rotor.
Claim 13
Dependent Claim
161 words
In apparatus for shredding materials such as tree limbs, brush and the like, and including a housing, a comminuting rotor supported for rotation within said housing, means for directing material generally radially into said rotor, means for discharging shredded material from said rotor, and means for driving said rotor, the improvement wherein said rotor comprises a plurality of axially spaced plates each having a uniform thickness, each said plate includes generally radially extending first and second portions disposed in axially offset parallel relation, a plurality of peripherally spaced shaft members extending through said offset portions of said plates, a plurality of hammers supported by said shaft members for freely swinging movement between said plates, at least some of said hammers being located adjacent said first portions of said plates in substantial radial alignment with said second portions, and at least some of said hammers being located adjacent said second portions of said plates in substantial radial alignment with said first portions.
Claim 14
Dependent Claim
161 words
In apparatus for shredding materials such as tree limbs, brush and the like, and including a housing, a comminuting rotor supported for rotation within said housing, means for directing material generally radially into said rotor, means for discharging shredded material from said rotor, and means for driving said rotor, the improvement wherein said rotor comprises a plurality of axially spaced plates each having a uniform thickness, each said plate includes generally radially extending first and second portions disposed in axially offset parallel relation, a plurality of peripherally spaced shaft members extending through said offset portions of said plates, a plurality of hammers supported by said shaft members for freely swinging movement between said plates, at least some of said hammers being located adjacent said first portions of said plates in substantial radial alignment with said second portions, and at least some of said hammers being located adjacent said second portions of said plates in substantial radial alignment with said first portions.
Claim 15
Dependent Claim
38 words
Apparatus as defined in claim 11 wherein said offset first and second portions of each said plate are diametrically opposed and are integrally connected by an intermediate portion which is inclined relative to said first and second portions.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |