US3931935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for cutting vehicle tires
Assignee: SCHRIPTEK RECOVERY SYSTEMS INTERNATIONAL Inc A CORP OF NY
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Filing: 1974-06-24
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Granted: 1976-01-13
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Expires: 1994-06-24
Abstract
Abstract A method for cutting vehicle tires and the like is disclosed together with apparatus for practicing the method comprising a first plurality of cutting discs axially spaced from each other along a first shaft and a second plurality of cutting discs axially spaced from each other along a second shaft parallel to the first. The thickness and spacing of the cutting discs along their respective shafts and the spacing of the shafts with respect to each other is such that the cutting discs of each plurality intermesh with those of the other plurality with the overlapping side surfaces of the discs substantially in contact to provide a scissor like cutting action and the free peripheral surfaces of the discs of each plurality are spaced from the shaft of the other plurality a distance sufficient to allow passage of the cut slices of the vehicle tires or the like. Various embodiments including means for enhancing feeding action and for recycling the cut slices are described.
Inventors
- 👤 Merle A. Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:27
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/16; B02C18/22; B02C18/2225; B02C18/2266; B02C17/00; B02C17/002; B02C18/14; B02C18/142; B02C2018/147; B02C2201/00; B02C2201/04; B29; B29L; B29L2030/00; Y; Y10; Y10S; Y10S241/00; Y10S241/31
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
162 words
Apparatus for cutting fiber reinforced resilient materials such as vehicle tires and the like into small parts comprising a pair of generally cylindrical cutting rolls mounted for rotation with their axes parallel and each including a plurality of axially spaced radially extending ribs forming troughs therebetween with said ribs of each roll meshing with said ribs of the other roll, each of said ribs having planar sides with a side of each rib of one roll overlapping and spaced less than about .030 inch from a side of an adjacent rib of the other roll, and each of said ribs having a plurality of radially extending protrusions spaced from each other about the outer periphery thereof, the spacing between the axes of said rolls and the dimensions of said ribs being such that said ribs of said rolls overlap each other by an amount which is less than the maximum thickness of said fiber reinforced resilient material as received between said rolls.
Claim 2
Dependent Claim
162 words
Apparatus for cutting fiber reinforced resilient materials such as vehicle tires and the like into small parts comprising a pair of generally cylindrical cutting rolls mounted for rotation with their axes parallel and each including a plurality of axially spaced radially extending ribs forming troughs therebetween with said ribs of each roll meshing with said ribs of the other roll, each of said ribs having planar sides with a side of each rib of one roll overlapping and spaced less than about .030 inch from a side of an adjacent rib of the other roll, and each of said ribs having a plurality of radially extending protrusions spaced from each other about the outer periphery thereof, the spacing between the axes of said rolls and the dimensions of said ribs being such that said ribs of said rolls overlap each other by an amount which is less than the maximum thickness of said fiber reinforced resilient material as received between said rolls.
Claim 3
Dependent Claim
20 words
Apparatus as claimed in claim 1 including means for forcing the cut resilient material from said troughs between said ribs.
Claim 4
Dependent Claim
36 words
Apparatus as claimed in claim 2 wherein the remaining depth of said troughs between said ribs is at least equal to and not much greater than the maximum thickness of said resilient material as received therein.
Claim 5
Dependent Claim
185 words
Apparatus as claimed in claim 2 including a pair of generally cylindrical stripping rolls mounted for rotation with their axes parallel to each other and to the axes of said cutting rolls and each including a plurality of axially spaced radially extending ribs having a plurality of radially extending protrusions about the outer periphery thereof and forming troughs therebetween with said ribs of each of said stripping rolls meshing with said ribs of a different one of said cutting rolls, each of said ribs of each of said stripping rolls having planar sides with a side of each rib of each stripping roll overlapping and spaced from a side of an adjacent rib of the cutting roll corresponding thereto, the spacing between the axis of each stripping roll and said cutting roll corresponding thereto and the dimensions of said ribs of said stripping rolls including said radial protrusions thereon being such that said ribs of each of said stripping rolls overlap said ribs of said cutting roll corresponding thereto by an amount approaching the depth of said troughs between said ribs of said cutting rolls.
Claim 6
Dependent Claim
78 words
Apparatus as claimed in claim 4 wherein each of said generally cylindrical cutting and stripping rolls comprises a shaft with a plurality of discs keyed to said shaft and alternating with spacer rings to provide said axially spaced radially extending ribs thereof, the ends of said shafts of said cutting and stripping rolls being journaled in a support means and a drive wheel keyed to one end of each of said shafts of said cutting and stripping rolls.
Claim 7
Dependent Claim
82 words
Apparatus as claimed in claim 5 wherein the drive wheel keyed to the end of the shaft of each of said stripping rolls is mechanically coupled by an endless coupling means to rotate with the drive wheel keyed to the corresponding end of the cutting roll intermeshed therewith, said drive wheels keyed to the ends of the shafts of said cutting roll each having a larger diameter than said drive wheels keyed to the ends of said shafts of said stripping rolls.
Claim 8
Dependent Claim
23 words
Apparatus as claimed in claim 1 wherein said overlapping planar sides of said ribs are spaced from each other by about 0.005 inch.
Claim 9
Dependent Claim
88 words
Apparatus as claimed in claim 7 wherein each of said generally cylindrical cutting rolls comprises a shaft with a plurality of discs keyed to said shaft and alternating with spacer rings to provide said axially spaced radially extending ribs thereof, the ends of said shafts of said cutting rolls being journaled in a support means with a pair of intermeshing spur gears each keyed to a different one of said shafts at corresponding ends thereof and a drive wheel keyed to one end of one of said shafts.
Claim 10
Dependent Claim
32 words
Apparatus as claimed in claim 8 wherein the outer periphery of each of said discs of each of said cutter rolls is provided by a separable strip of metal removably mounted thereon.
Claim 11
Dependent Claim
56 words
Apparatus as claimed in claim 9 wherein said radially extending protrusions each comprise a generally cylindrical elongated peg having a threaded end threadably received in a different one of a plurality of threaded holes in the outer periphery of said discs and said separable strips of metal are removably mounted on said discs by said protrusions.
Claim 12
Dependent Claim
25 words
Apparatus as claimed in claim 1 further including a drum surrounding said generally cylindrical cutting rolls, said drum being mounted for rotation about its axis.
Claim 13
Dependent Claim
38 words
Apparatus as claimed in claim 11 wherein the axis of said drum is generally parallel to said axes of said cutting rolls and the wall of said drum has a plurality of apertures therethrough of given cross-sectional dimensions.
Claim 14
Dependent Claim
43 words
Apparatus as claimed in claim 1 including a plurality of pairs of said generally cylindrical cutting rolls mounted in a vertical stack with the axes of each pair of cutting rolls generally parallel to the axes of the other pairs of cutting rolls.
Claim 15
Dependent Claim
93 words
Apparatus as claimed in claim 1 further including a first conveyor belt extending from beneath said pair of generally cylindrical cutting rolls to a remote point, a cylindrical drum surrounding the end of said first conveyor belt at said remote point and mounted for rotation about the cylindrical axis thereof and a second conveyor belt located above said first conveyor belt and extending from within said drum to a point above said pair of generally cylindrical cutting rolls, said drum having a plurality of apertures through the wall thereof of given cross-sectional dimensions.
Claim 16
Dependent Claim
129 words
Apparatus for cutting fiber reinforced resilient material such as vehicle tires and the like into small parts comprising a pair of generally cylindrical cutting rolls mounted for rotation with their axes parallel and each including a plurality of axially space radially extending ribs forming troughs therebetween with said ribs of each roll meshing with said ribs of the other roll, each of said ribs having planar sides with a side of each rib of one roll overlapping and spaced less than abut .030 inch from a side of an adjacent rib of the other roll, and each of said ribs of said cutting rolls having a generally sawtooth outer peripheral surface including a plurality of spaced radially extending flat surfaces interconnected by flat surfaces extending along chordal segments thereof.
Claim 17
Dependent Claim
129 words
Apparatus for cutting fiber reinforced resilient material such as vehicle tires and the like into small parts comprising a pair of generally cylindrical cutting rolls mounted for rotation with their axes parallel and each including a plurality of axially space radially extending ribs forming troughs therebetween with said ribs of each roll meshing with said ribs of the other roll, each of said ribs having planar sides with a side of each rib of one roll overlapping and spaced less than abut .030 inch from a side of an adjacent rib of the other roll, and each of said ribs of said cutting rolls having a generally sawtooth outer peripheral surface including a plurality of spaced radially extending flat surfaces interconnected by flat surfaces extending along chordal segments thereof.
Claim 18
Dependent Claim
101 words
Apparatus as claimed in claim 15 wherein the radially extending flat surfaces are identical to each other, said flat surfaces extending along said chordal segments are identical to each other and a plurality of identical separable strips of metal are each removably mounted on a different one of said flat surfaces extending along said chordal segments, said strips having a width equal to said flat surfaces extending along said chordal segments and a length greater than said flat surfaces extending along said chordal segments by an amount sufficient to cause the upper surface thereof to overlap the next chordal segment surface.
Claim 19
Independent Claim
163 words
The method of cutting fiber reinforced resilient material such as vehicle tires and the like into smaller parts by passing said materials between a pair of generally cylindrical rolls, said method comprising the steps of: a. providing both said rolls with a plurality of axially spaced radially extending ribs having opposed planar surfaces with radial dimensions greater than the thickness of said resilient material; b. positioning said rolls with their axes parallel to each other and with said ribs of each roll meshing with said planar surfaces of said ribs of one roll substantially in contact with and overlapping said planar surfaces of said ribs of said other roll by an amount which is less than the maximum thickness of said resilient material; c. counter-rotating said rolls with respect to each other about their respective axes; d. feeding said resilient material between said rolls; and e. forcing the cut parts of said resilient material from between said ribs of each of said rolls.
Claim 20
Independent Claim
163 words
The method of cutting fiber reinforced resilient material such as vehicle tires and the like into smaller parts by passing said materials between a pair of generally cylindrical rolls, said method comprising the steps of: a. providing both said rolls with a plurality of axially spaced radially extending ribs having opposed planar surfaces with radial dimensions greater than the thickness of said resilient material; b. positioning said rolls with their axes parallel to each other and with said ribs of each roll meshing with said planar surfaces of said ribs of one roll substantially in contact with and overlapping said planar surfaces of said ribs of said other roll by an amount which is less than the maximum thickness of said resilient material; c. counter-rotating said rolls with respect to each other about their respective axes; d. feeding said resilient material between said rolls; and e. forcing the cut parts of said resilient material from between said ribs of each of said rolls.
Claim 21
Dependent Claim
28 words
The method of claim 17 including the step of repeating said method with respect to said cut parts forced from between said ribs of each of said rolls.
Claim 22
Dependent Claim
31 words
The method of claim 18 including the step of selectively removing all of said cut parts having maximum dimensions smaller than a given dimension before said step of repeating said method.
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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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |