US3877506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire buffing machine
Assignee: Individual
•
Filing: 1974-04-08
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Granted: 1975-04-15
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Expires: 1994-04-08
Abstract
Abstract A machine for buffing the tread face of a tire casing in preparation for retreading features a buffing rasp and a tire mounting shaft assembly which lies in a horizontal plane so that the rasp and tire casing revolve in vertical planes. The tire mounting assembly is supported on a floor-mounted radius adjustment carriage which is motor driven with precision control. The tire mounting assembly is pivotally supported on the radius adjustment carriage for swinging in a horizontal arc relative to the periphery of the horizontal axis rasp. The mounting assembly may also pivot in a vertical plane under control of a precision screw actuator to regulate the depth of cut by the rotary buffing rasp. An overhead counterbalanced side wall buffer attachment is provided. A standard type floor-mounted electric motor for the buffing rasp is utilized and the latter has a long shaft with widely spaced bearings on an extremely sturdy pedestal. An independently controlled kick cylinder assures easy and rapid inflation of the tire casing. A small conveniently located front console renders the machine easy to use with the operator having a clear view of vital operations.
Inventors
- 👤 John R Mattox
- 👤 Thomas W Mattox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:11
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B24; B24B; B24B5/00; B24B5/36; B24B5/366; B29D2030/541; Y; Y10; Y10T; Y10T29/00; Y10T29/44
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
254 words
A machine for buffing tire casings comprising a horizontal axis rotary rasp and power means connected with the rasp to turn it, a carriage mounted for linear movement toward and away from the rasp at an elevation below the axis of the rasp, precision power-operated screw shaft means connected with the carriage to move it horizontally in a linear path forwardly and rearwardly relative to the rasp, a vertical axis pivot element on said carriage disposed substantially in a vertical plane through the transverse center of the carriage and through the center of the rasp, a horizontally swingable support arm journaled on said vertical axis pivot element, a horizontal axis pivot element on said horizontally swingable support arm, a vertically swingable support arm extending above the horizontally swingable arm and pivotally connected with said horizontal axis pivot element, a precision screw shaft feed means coupled to the vertically swingable support arm to swing the same in a vertical plane toward and away from said rasp, the vertically swingable arm being laterally offset from said rasp, a horizontal tire casing drive and inflation shaft journaled for rotation on the upper end of the vertically swingable support arm at substantially the elevation of said rasp, power drive means for said drive and inflation shaft on the vertically swingable support arm, and a control console for the machine on the vertically swingable support arm including independent controls for the rasp power means, carriage screw shaft means and said power drive means for said drive and inflation shaft.
Claim 2
Dependent Claim
254 words
A machine for buffing tire casings comprising a horizontal axis rotary rasp and power means connected with the rasp to turn it, a carriage mounted for linear movement toward and away from the rasp at an elevation below the axis of the rasp, precision power-operated screw shaft means connected with the carriage to move it horizontally in a linear path forwardly and rearwardly relative to the rasp, a vertical axis pivot element on said carriage disposed substantially in a vertical plane through the transverse center of the carriage and through the center of the rasp, a horizontally swingable support arm journaled on said vertical axis pivot element, a horizontal axis pivot element on said horizontally swingable support arm, a vertically swingable support arm extending above the horizontally swingable arm and pivotally connected with said horizontal axis pivot element, a precision screw shaft feed means coupled to the vertically swingable support arm to swing the same in a vertical plane toward and away from said rasp, the vertically swingable arm being laterally offset from said rasp, a horizontal tire casing drive and inflation shaft journaled for rotation on the upper end of the vertically swingable support arm at substantially the elevation of said rasp, power drive means for said drive and inflation shaft on the vertically swingable support arm, and a control console for the machine on the vertically swingable support arm including independent controls for the rasp power means, carriage screw shaft means and said power drive means for said drive and inflation shaft.
Claim 3
Dependent Claim
70 words
A machine for buffing tire casings as defined by claim 1, and an upright pedestal for supporting said rasp at an elevation above a floor, an elongated horizontal rotary shaft carrying said rasp, widely spaced bearings for the support of said shaft secured to said pedestal, a floor-mounted electric motor for driving said shaft on one side of the pedestal, and driving connecting means between said motor and said shaft.
Claim 4
Dependent Claim
66 words
A machine for buffing tire casings as defined by claim 1, and fixed floor-mounted horizontal guideway means for said carriage extending at right angles to the rotational axis of the rasp, said power-operated screw shaft means comprising a horizontal rotary screw shaft having threaded engagement with the carriage, and floor-mounted motor and gearing means connected with the screw shaft to turn the same on its axis.
Claim 5
Dependent Claim
38 words
A machine for buffing tire casings as defined by claim 3, and a visual linear measurement scale positioned near one side of the carriage and a coacting pointer attached to the carriage and movable therewith along said scale.
Claim 6
Dependent Claim
31 words
A machine for buffing tire casings as defined by claim 3, and a flexible enclosure for said horizontal guideway means and attached to opposite ends of the carriage and guideway means.
Claim 7
Dependent Claim
131 words
A machine for buffing tire casings as defined by claim 1, and a kick cylinder and push plate unit mounted on the vertically swingable support arm near side drive and inflation shaft, a pair of tire casing mounting heads mounted on said drive and inflation shaft to turn therewith and being axially movable thereon, said push plate adapted to engage one of said mounting heads during inflation of a tire casing and forcing such head into air sealing engagement with a bead of the casing, inflation of the tire casing causing said heads to separate axially of the drive and inflation shaft and to contact fixed shoulder means on the shaft, said kick cylinder and push plate unit then yielding to the inflation pressure causing the axial separation of said heads.
Claim 8
Dependent Claim
27 words
A machine for buffing tire casings as defined by claim 6, and an independent control element on said console for said kick cylinder and push plate unit.
Claim 9
Dependent Claim
76 words
A machine for buffing tire casings as defined by claim 1, and an inflation head carried by said vertically swingable support arm and forming a bearing support for said drive and inflation shaft and having an inflation air receiving chamber surrounding said shaft, said shaft having a bore and a port leading from said bore and opening into said chamber, said shaft having a second port delivering inflation air to a tire casing on said shaft.
Claim 10
Dependent Claim
88 words
A machine for buffing tire casings as defined by claim 1, and a tire casing diameter gaging unit carried by said vertically swingable support arm including an element adapted to contact the tread surface of a tire casing on said drive and infaltion shaft, resilient means biasing said gaging unit away from engagement with the tire casing, and cylinder-piston means connected with the gaging unit to draw the same into engagement with the tire casing when said power drive means for the drive and inflation shaft is activated.
Claim 11
Dependent Claim
44 words
A machine for buffing tire casings as defined by claim 9, and said gaging unit comprIsing a linear indicating scale representative of tire casing diameter mounted adjacent said control console and a pointer movable along the indicating scale and connected with said cylinder-piston means.
Claim 12
Dependent Claim
60 words
A machine for buffing tire casings as defined by claim 10, and said gaging unit additionally comprising a support and guide bar for the unit, a bearing sleeve slidably supporting said guide bar, and head element attached to the guide bar and to the piston rod of said cylinder-piston means and carrying said element adapted to contact said tread surface.
Claim 13
Dependent Claim
30 words
A machine for buffing tire casings as defined by claim 1, and an overhead universally supported side wall buffing assembly on the top of a fixed part of the machine.
Claim 14
Dependent Claim
79 words
A machine for buffing tire casings as defined by claim 12, and said fixed part of the machine comprising an upstanding pedestal upon which said horizontal axis rasp is supported, said side wall buffing assembly including a counterbalanced vertically swingable arm, a side wall buffer drive motor carried by said arm, and a control switch for said motor on the leading end portion of said arm in ready reach of an operator standing at the front of said machine.
Claim 15
Dependent Claim
40 words
A machine for buffing tire casings as defined by claim 1, and a vacuum dust and particle disposal conduit means having an inlet mouth arranged adjacent to said rasp and extending rearwardly thereof relative to the front of the machine.
Claim 16
Dependent Claim
50 words
A machine for buffing tire casings as defined by claim 1, and a retractable guard for the forward side of said rasp, and power means connected with said guard and shifting it to a rasp exposing position when said powder drive means for said drive and inflation shaft is activated.
Claim 17
Dependent Claim
191 words
A machine for buffing pneumatic tire casings comprising a pedestal, a horizontal axis rotary rasp mounted on said pedestal near the top thereof, a floor-mounted electric motor mounted near the pedestal, transmission means operatively connecting the armature shaft of said motor to said rotary rasp, a horizontal carriage guidway mounted below said rasp and extending forwardly thereof, a carriage engaging said guideway for linear movement toward and away from said rasp, power means connected with the carriage to move it in opposite directions on said guideway, a horizontally swingable support arm pivotally mounted on said carriage, an upstanding vertically swingable support arm pivotally mounted on the horizontally swingable support arm, manually operable power means connected with the vertically swingable support arm to move the same on its pivot toward and away from said rasp, a rotary tire casing drive and inflation shaft journaled for rotation on said vertically swingable support arm and having inflation air passage means, power drive means for said shaft on said vertically swingable support arm, and a pair of tire casing mounting heads on said shaft having elements engageable with tire casing beads in air retaining relationship.
Claim 18
Dependent Claim
191 words
A machine for buffing pneumatic tire casings comprising a pedestal, a horizontal axis rotary rasp mounted on said pedestal near the top thereof, a floor-mounted electric motor mounted near the pedestal, transmission means operatively connecting the armature shaft of said motor to said rotary rasp, a horizontal carriage guidway mounted below said rasp and extending forwardly thereof, a carriage engaging said guideway for linear movement toward and away from said rasp, power means connected with the carriage to move it in opposite directions on said guideway, a horizontally swingable support arm pivotally mounted on said carriage, an upstanding vertically swingable support arm pivotally mounted on the horizontally swingable support arm, manually operable power means connected with the vertically swingable support arm to move the same on its pivot toward and away from said rasp, a rotary tire casing drive and inflation shaft journaled for rotation on said vertically swingable support arm and having inflation air passage means, power drive means for said shaft on said vertically swingable support arm, and a pair of tire casing mounting heads on said shaft having elements engageable with tire casing beads in air retaining relationship.
Claim 19
Dependent Claim
18 words
A machine as defined by claim 16, and an operator''s control console on said vertically swingable support arm.
Claim 20
Dependent Claim
32 words
A machine as defined by claim 16, and an overhead counterbalanced universally swiveled power driven tire casing side wall buffing assembly including an operating handle mounted on the top of said pedestal.
References Cited (Backward Citations)
US2515167A
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US2786526A
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US2979123A
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US3528476A
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US3584673A
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US3675706A
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |