Patent US3922942A successfully refreshed from Google Patents.
US3922942A
Expired / Lapsed
US
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Apparatus for cutting up tire casings
Assignee: Kennametal Inc
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Filing: 1974-09-06
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Granted: 1975-12-02
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Expires: 1994-09-06
Abstract
Abstract An apparatus for cutting tire casings into smaller pieces for disposal of the tire casings by chemical processing, or by burning or the like. The apparatus comprises opposed knife sets relatively moveable toward and away from each other and adapted for receiving the tire casing therebetween when separated and for cutting the tire casing into segments when moved toward each other. The apparatus includes a support for holding the tire casing during cutting and the cutting instrumentalities comprise opposed knife sets which are inclined relative to each other so as to perform a sort of scissor cut on the tire casing at a plurality of circumferentially spaced regions thereabout.
Inventors
- 👤 William E Fawcett
- 👤 Alan L Echtenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:17
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/003; B26D3/005; Y; Y10; Y10S; Y10S83/00; Y10S83/923; Y10S83/929; Y10S83/951; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8835; Y10T83/929; Y10T83/9411; Y10T83/9447
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
In a machine for cutting tire casings into circumferential segments; a pair of spaced support plates adapted for receiving a tire casing to be cut therebetween, knife members upstanding from the sides of the plates which face each other disposed in circumferentially spaced relation about a tire casing between the plates and substantially radial to the tire casing, each knife member on one plate adapted for cooperation with a knife member on the other plate to make a substantially radial cut through a tire casing placed between said plates when the plates are moved toward each other.
Claim 2
Dependent Claim
97 words
In a machine for cutting tire casings into circumferential segments; a pair of spaced support plates adapted for receiving a tire casing to be cut therebetween, knife members upstanding from the sides of the plates which face each other disposed in circumferentially spaced relation about a tire casing between the plates and substantially radial to the tire casing, each knife member on one plate adapted for cooperation with a knife member on the other plate to make a substantially radial cut through a tire casing placed between said plates when the plates are moved toward each other.
Claim 3
Dependent Claim
48 words
A machine according to claim 1 in which said plates are substantially vertical and move toward and away from each other in the horizontal direction, the segments of a tire cut by the knife members on said plates dropping downwardly from between said plates after a cutting operation.
Claim 4
Dependent Claim
28 words
A machine according to claim 1 which includes guide means engaging said plates and guiding said plates during movement of said plates toward and away from each other.
Claim 5
Dependent Claim
19 words
A machine according to claim 1 in which said knife members are spaced apart at about 20 degree intervals.
Claim 6
Dependent Claim
43 words
A machine according to claim 1 which includes knife member support blocks on said plates each having means at each side for supporting a knife member, the support blocks on one plate being staggered relative to the support blocks on the other plate.
Claim 7
Dependent Claim
28 words
A machine according to claim 1 in which said knife members incline toward each other in the radially inward direction of a tire casing placed between said plates.
Claim 8
Dependent Claim
37 words
A machine according to claim 1 which includes means for supporting a tire casing within the radial range of said knife members, said knife members inclining toward each other in the radially inward direction of the casing.
Claim 9
Dependent Claim
56 words
A machine according to claim 7 which includes guide rods on one plate and apertures in the other plate receiving said rods for guidiNg said plates during relative reciprocating movement of the plates, said means for supporting a tire casing comprising pins on at least one plate near the radially outer ends of said knife members.
References Cited (Backward Citations)
US1405401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |