US3675706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire buffing machine
Assignee: Cahill Manufacturing Co Inc
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Filing: 1971-04-14
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Granted: 1972-07-11
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Expires: 1991-04-14
Abstract
Abstract A machine for buffing a tire of any desired size and width includes a tire support mounted on a base for oscillation around an axis perpendicular to the base and for sliding movement in a plane parallel to the base. A cutting means is mounted on the base for sliding movement in a plane parallel to the base towards the tire. A template with a one to one ratio with respect to the desired tire contour is mounted on the tire support to oscillate therewith, and a template follower connected to the cutting means for movement therewith is urged into contact with the template.
Inventors
- 👤 William S Cahill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:40
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/02; B29B17/0206; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29D2030/541; B29K; B29K2021/00; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
205 words
A machine for buffing a tire comprising a base; tire support means pivotally mounted on said base to oscillate on an axis of oscillation substantially perpendicular to said base; rotating means for mounting and rotating said tire on an axis of rotation substantially parallel to said base, said rotating means being slidably mounted on said support means to oscillate therewith and to move in a plane substantially parallel to said base; template means mounted on said support means to oscillate therewith and with said rotating means, said template having a profile defining the contour desired for said tire; cutting means mounted on said base for movement in a plane substantially parallel to said base towards said tire mounted on said rotating means; template follower means connected to said cutting means for movement therewith into contact with the profile of said template; means for simultaneously urging said cutting means towards contact with the periphery of said tire and said follower into contact with the profile of said template means; and means for oscillating said support means to move the periphery of the tire across said cutting means, whereby the periphery of the tire is shaped into the desired contour according to the profile of said template.
Claim 2
Dependent Claim
205 words
A machine for buffing a tire comprising a base; tire support means pivotally mounted on said base to oscillate on an axis of oscillation substantially perpendicular to said base; rotating means for mounting and rotating said tire on an axis of rotation substantially parallel to said base, said rotating means being slidably mounted on said support means to oscillate therewith and to move in a plane substantially parallel to said base; template means mounted on said support means to oscillate therewith and with said rotating means, said template having a profile defining the contour desired for said tire; cutting means mounted on said base for movement in a plane substantially parallel to said base towards said tire mounted on said rotating means; template follower means connected to said cutting means for movement therewith into contact with the profile of said template; means for simultaneously urging said cutting means towards contact with the periphery of said tire and said follower into contact with the profile of said template means; and means for oscillating said support means to move the periphery of the tire across said cutting means, whereby the periphery of the tire is shaped into the desired contour according to the profile of said template.
Claim 3
Dependent Claim
76 words
A machine as defined in claim 1, wherein said rotating means includes a carriage slidably mounted on said support means for movement in a plane substantially parallel to said base towards and away from said cutting means, motor means mounted on said carriage to rotate said tire, driving means to move said carriage with respect to said support means, and measuring means to continuously and directly indicate the diameter and the buffing depth of the tire.
Claim 4
Dependent Claim
49 words
A machine as defined in claim 1, wherein said template means includes template carrier means fixedly secured to said tire support means, a template located on said template carrier means, and means to position said template and to secure it against movement with respect to the template carrier means.
Claim 5
Dependent Claim
47 words
A machine as defined in claim 1, wherein said cutting means comprises way means affixed to said base, slide means slidably mounted on said way means, and a power operated cylindrical rasp mounted on said slide means on an axis of rotation substantially parallel to said base.
Claim 6
Dependent Claim
40 words
A machine as defined in claim 1, wherein said means for oscillating comprises a way ring mounted on said base concentrically with said axis of oscillation, said tire support means being provided with stabilizing means slidable over said way ring.
Claim 7
Dependent Claim
108 words
A machine as defined in claim 5, wherein said way ring is provided with a peripheral groove and a roller chain, and said tire support means is provided with a sprocket means, said chain being attached at its two ends to said way ring and engaging with said sprocket means, the portions of the chain not in engagement with said sprocket means being located inside said groove, and said sprocket means comprising two idling sprockets and one driven sprocket located in between and operated by a reversible motor means, said chain surrounding a portion of said driven sprocket and being urged into this position by said idling sprockets.
Claim 8
Dependent Claim
54 words
A machine as defined in claim 2, wherein said driving means comprises rack gear means stationarily mounted on said support means, operating means, and pinion gear means transversely arranged on said carriage, said pinion gear means engaging with said rack gear means and being rotatable in response to the actuation of said operating means.
Claim 9
Dependent Claim
85 words
A machine as defined in claim 2, wherein said measuring means comprises a scale fixed to said support means and parallel to said rack gear means, a gauge affixed to said carriage and parallel to said scale, and a pointer means slidable along said gauge, said scale being calibrated to a ratio of 1:2 to directly indicate the diameter value of the tire being buffed, and said gauge including numbers corresponding to code numbers on the template designating the desired diameter of the buffed tire.
Claim 10
Dependent Claim
97 words
A machine as defined in claim 3, wherein said template carrier means comprises a first plate means attached to the tire support means and a second plate means mounted around said axis of oscillation and affixed to said first plate means, said first plate means being provided with two set screws to adjust the position of said second plate means around said axis of oscillation, said second plate means being provided with protrusions on its upper surface, and said template being mounted on said second plate means and being provided with recesses to engage with said protrusions.
Claim 11
Dependent Claim
47 words
A machine as defined in claim 9, wherein said means to secure the template against movement includes a hold down bar provided with a longitudinal slit and a nut to fix the bar to said second plate means and to press down said bar against said template.
Claim 12
Dependent Claim
60 words
A machine as defined in claim 4, wherein said way means includes a spring-loaded bearing means comprising a frame affixed to said base, a rigid member at one end hingedly mounted to said frame and at the other end suspended on spring means from said frame, and a roller means rotatably mounted on said member to contact said slide means.
Claim 13
Dependent Claim
43 words
A machine as defined in claim 4, wherein said template follower means is fixedly secured to said slide means and defines, together with the operative portion of said rasp contacting the periphery of said tire, a plane parallel to said axis of oscillation.
Claim 14
Dependent Claim
36 words
A machine as defined in claim 12, wherein said follower means comprises a follow bar fixedly secured to said slide means and in slidable relationship with said template, and lubricating means associated with said follow bar.
Claim 15
Dependent Claim
55 words
A machine as defined in claim 12, wherein said follower means comprises a follow bar slidably secured to said slide means and in rolling relationship with said template, roller bearing means rotatably mounted on said slide means to engage with said follow bar, and spring means to urge said follow bar towards its center position.
Claim 16
Dependent Claim
44 words
A machine as defined in claim 12, wherein said means to urge said follower means into contact with said template means includes pneumatic cylinder means located between said way means and said slide means, and air control valve means to operate said cylinder means.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |