Patent US4015782A successfully refreshed from Google Patents.
US4015782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reducing polymers or the like to substantially uniform small size pieces
Assignee: Individual
•
Filing: 1975-07-09
•
Granted: 1977-04-05
•
Expires: 1995-07-09
Abstract
Abstract A machine for chopping polymers, and in particularly elastomeric materials such as tires, into uniform small size particles through the use of a rotating cutting head having teeth that have side cutting edges generally perpendicular to their outer end edges, which are parallel to the axis of rotation, and interfit with stationary teeth formed in complimentary shape. The cutting head is used in combination with a material infeed mechanism that maintains a steady, positive feed of material to reduce the elastomeric material into uniform small chunks that can be used for fuel, or otherwise more readily disposed than the present large size tires or similar articles.
Inventors
- 👤 Bernard H. Granite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:12
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/16; B02C18/22; B02C18/2225; B02C18/2283; B02C18/14; B02C18/144; B02C18/18; B02C18/186; B02C2201/00; B02C2201/04; Y; Y10; Y10S; Y10S241/00; Y10S241/31
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
169 words
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade including side stationary teeth edges parallel to the side edges of the teeth on the rotor, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor and the adjacent side edges of interfitting teeth provide a scissor like cutting action along the mating sides of the movable and stationary teeth.
Claim 2
Independent Claim
169 words
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade including side stationary teeth edges parallel to the side edges of the teeth on the rotor, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor and the adjacent side edges of interfitting teeth provide a scissor like cutting action along the mating sides of the movable and stationary teeth.
Claim 3
Dependent Claim
24 words
The combination as specified in claim 1 and means to advance an elastomeric material, such as a pneumatic tire across said stationary cutting blade.
Claim 4
Dependent Claim
21 words
The combination as specified in claim 2 and means to provide a lubricant on elastomeric materials adjacent the stationary cutting blade.
Claim 5
Dependent Claim
60 words
The combination as specified in claim 1 wherein said rotor has a pair of cutting blades mounted thereon, and said rotor having a peripheral wall which is formed so that the rotationally leading surface of said movable cutting blade is exposed radially inwardly from the radially outer end of each of said teeth on said movable blade a selected amount.
Claim 6
Dependent Claim
47 words
The combination as specified in claim 1 wherein the outer ends of said teeth on said movable cutting blade and the outer ends of said teeth on said stationary cutting blade pass closely adjacent inner ends of the spaces between the teeth on the respective opposite blade.
Claim 7
Dependent Claim
38 words
The combination as specified in claim 1 wherein said stationary cutting blade has a generally planar surface for supporting elastomeric materials, and said surface defines a plane that passes substantially through the axis of rotation of said rotor.
Claim 8
Independent Claim
168 words
A device for shredding polymers such as vehicle tires comprising a support frame, movable cutting blade means having a rotationally leading surface and a cutting edge formed into a plurality of speced, blunt ended parallel sided teeth rotatably mounted on said frame about an axis, stationary cutting blade means having a generally planar feed surface and a cutting edge formed into a plurality of spaced blunt ended parallel sided teeth, the teeth formed on said movable cutting blade means and on said stationary cutting blade means interdigitating upon rotation of said movable cutting blade means to provide discrete pieces of polymeric material advanced across the stationary cutting blade means, the plane of said feed surface being substantially parallel to and intersecting said axis of rotation, said movable cutting blade means being positioned so that the leading surface thereof is parallel to the feed surface substantially at the time when the respective teeth on the movable blade means reach the plane of the feed surface on a cutting stroke.
Claim 9
Independent Claim
168 words
A device for shredding polymers such as vehicle tires comprising a support frame, movable cutting blade means having a rotationally leading surface and a cutting edge formed into a plurality of speced, blunt ended parallel sided teeth rotatably mounted on said frame about an axis, stationary cutting blade means having a generally planar feed surface and a cutting edge formed into a plurality of spaced blunt ended parallel sided teeth, the teeth formed on said movable cutting blade means and on said stationary cutting blade means interdigitating upon rotation of said movable cutting blade means to provide discrete pieces of polymeric material advanced across the stationary cutting blade means, the plane of said feed surface being substantially parallel to and intersecting said axis of rotation, said movable cutting blade means being positioned so that the leading surface thereof is parallel to the feed surface substantially at the time when the respective teeth on the movable blade means reach the plane of the feed surface on a cutting stroke.
Claim 10
Independent Claim
206 words
A device for chopping elastomeric materials comprising a support frame, a rotor rotatably mounted on said frame comprising a wall member having a plurality of part annular grooves formed therein, and ribs formed between said part annular grooves, at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said ribs being positioned to back said teeth of said movable cutting blade on a rotationally trailing side of said movable cutting blade, said teeth on said movable cutting blade being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade mounted on said frame having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor, and the teeth on said stationary cutting blade align with and pass through portions of said grooves on said rotor as said rotor rotates.
Claim 11
Independent Claim
206 words
A device for chopping elastomeric materials comprising a support frame, a rotor rotatably mounted on said frame comprising a wall member having a plurality of part annular grooves formed therein, and ribs formed between said part annular grooves, at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said ribs being positioned to back said teeth of said movable cutting blade on a rotationally trailing side of said movable cutting blade, said teeth on said movable cutting blade being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade mounted on said frame having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor, and the teeth on said stationary cutting blade align with and pass through portions of said grooves on said rotor as said rotor rotates.
Claim 12
Dependent Claim
18 words
The combination as specified in claim 8 and power means to advance material into said movable cutting blade.
Claim 13
Dependent Claim
48 words
The combination of claim 8 wherein said ribs have part annular outer surfaces and said grooves have part annular bottom surfaces, said part annular outer and bottom surfaces being concentric with each other and being centered on an axis offset from the axis of rotation of said rotor.
Claim 14
Dependent Claim
30 words
The combination of claim 10 wherein the outer end edges of said movable teeth do not extend substantially beyond the part annular outer surfaces of aligning ribs in radial direction.
Claim 15
Dependent Claim
45 words
The combination of claim 11 wherein said teeth on said stationary cutting blade have end edges generally parallel to the bottom surfaces of said grooves and closely spaced from said bottom surfaces when the cutting blades first start to interfit during rotation of said rotor.
Claim 16
Dependent Claim
87 words
The combination of claim 11 wherein there are a plurality of movable cutting blades evenly spaced around the rotor, each of said movable cutting blades being backed by separate sets of part annular ribs extending around the periphery of the rotor from the movable cutting blade associated therewith to adjoin the next rotationally trailing cutting blade, the respective center of the outer surfaces of the separate sets of part annular ribs being offset from the axis of the rotation of the rotor in a different radial direction.
Claim 17
Independent Claim
205 words
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along said rotor and being rotatably mounted on said frame, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, means to retain said movable cutting blade on said rotor including a wedge groove defined in said rotor and extending along and opening to said movable blade, said movable blade being backed by a shoulder formed on said rotor, a wedge mounted in said wedge groove and forced against said movable blade to force the blade against said shoulder, means to retain said wedge in position in said groove, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed in said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor.
Claim 18
Independent Claim
205 words
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along said rotor and being rotatably mounted on said frame, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, means to retain said movable cutting blade on said rotor including a wedge groove defined in said rotor and extending along and opening to said movable blade, said movable blade being backed by a shoulder formed on said rotor, a wedge mounted in said wedge groove and forced against said movable blade to force the blade against said shoulder, means to retain said wedge in position in said groove, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed in said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor.
Claim 19
Dependent Claim
47 words
The device of claim 14 wherein said wedge groove has a bottom surface, a threaded opening in at least one portion of said wedge and a removable tool threadable into said threadable opening and against said bottom surface to force said wedge outwardly from the bottom surface.
References Cited (Backward Citations)
US2832546A
Cited
US2970780A
Cited
US3151814A
Cited
US3360204A
Cited
US3545686A
Cited
US3690358A
Cited
US3721392A
Cited
US3837586A
Cited
US3762256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |