US3841033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire manufacturing
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1974-04-04
•
Granted: 1974-10-15
•
Expires: 1994-04-04
Abstract
Abstract Reduction of radial runout of a tire tread is combined with reduction of variation of radial force exerted by the tire on a load roll representing a road surface. The variations (i.e., in force and/or in runout) are measured by known electronic circuitry which also provide signals used to regulate the amount of and determine the location of material to be removed from the tire by grinding. Reduction of force variation is made by grinding wheels positioned to remove material at the lateral edges or outer ribs of the tire. Radial runout is reduced by a single concave surface wheel positioned to remove material from the tread between the lateral edges thereof. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
Inventors
- 👤 L Vandale
- 👤 P Appleby
- 👤 W Braden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:16
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16; B24B49/165; B24B49/02; B24B49/04; B24B5/00; B24B5/36; B24B5/366; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0633; B29D30/0643; G; G01; G01M; G01M1/00; G01M1/30; G01M1/34; G01M17/00; G01M17/007; G01M17/02; G01M17/022; G01M17/024; B29D2030/0634; B29D2030/0635; Y; Y10; Y10S; Y10S451/00; Y10S451/92
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
156 words
Method of reducing non-uniformity of radial force and radial dimension in a tire which method comprises, inflating and rotating said tire about a fixed axis, and while said tire continues to rotate about said axis applying to said tire a radial load sufficient to deflect the tire, concurrently sensing the radial runout of the tire tread surface, force variation sensing by force measuring means the variations in force exerted by the tire on said load and while continuing said force variation sensing, removing material from the tire tread surface at at least one of the two marginal portions thereof in response to said variations in force and in amount and angular location such as to reduce the variations in force, and while continuing said runout sensing, removing material from said surface between said marginal portions in response to said radial runout in amount and angular location such as to reduce the radial runout of the tire.
Claim 2
Dependent Claim
156 words
Method of reducing non-uniformity of radial force and radial dimension in a tire which method comprises, inflating and rotating said tire about a fixed axis, and while said tire continues to rotate about said axis applying to said tire a radial load sufficient to deflect the tire, concurrently sensing the radial runout of the tire tread surface, force variation sensing by force measuring means the variations in force exerted by the tire on said load and while continuing said force variation sensing, removing material from the tire tread surface at at least one of the two marginal portions thereof in response to said variations in force and in amount and angular location such as to reduce the variations in force, and while continuing said runout sensing, removing material from said surface between said marginal portions in response to said radial runout in amount and angular location such as to reduce the radial runout of the tire.
Claim 3
Independent Claim
170 words
The method of reducing variation in force and in radius of a tire comprising in combination during continuing uninterrupted revolution of said tire about its own revolution axis, the steps of: A. measuring variations in force exerted radially by the tire between means rotatably mounting the tire and load means urged against the outer circumference of the tire; B. removing material in response to measurements obtained in step (A) from at least one of the two lateral margins of the tread circumference of the tire in amount and angular location such as to reduce said variations in force while continuing step (A); C. during continuance of steps (A) and (B), measuring variations in radius of said circumference about its rotational axis; and D. while continuing steps (A) and (C), removing material in response to measurements obtained in step (C) from said circumference between said margins in amount and angular location such as to reduce said variations in radius; whereby effects of step (D) are detected during continuance of step (A).
Claim 4
Independent Claim
170 words
The method of reducing variation in force and in radius of a tire comprising in combination during continuing uninterrupted revolution of said tire about its own revolution axis, the steps of: A. measuring variations in force exerted radially by the tire between means rotatably mounting the tire and load means urged against the outer circumference of the tire; B. removing material in response to measurements obtained in step (A) from at least one of the two lateral margins of the tread circumference of the tire in amount and angular location such as to reduce said variations in force while continuing step (A); C. during continuance of steps (A) and (B), measuring variations in radius of said circumference about its rotational axis; and D. while continuing steps (A) and (C), removing material in response to measurements obtained in step (C) from said circumference between said margins in amount and angular location such as to reduce said variations in radius; whereby effects of step (D) are detected during continuance of step (A).
Claim 5
Dependent Claim
32 words
In the method as claimed in claim 2, continuing to remove material according to step (D) in successive small radial increments to reduce the variations according to step (C) to acceptable limits.
Claim 6
Dependent Claim
27 words
In the method as claimed in claim 2, continuing measurement according to step (A) thereby to measure also the variation in radial force effected by step (D).
Claim 7
Independent Claim
142 words
The method of reducing variations of force and of radius in a tire comprising: A. mounting said tire on a rotatable chuck; B. moving a rotatable radial load sensing roll into tire deflecting engagement with said tire; C. sensing variations in radial load experienced by said roll as said tire rotates; D. measuring variations in radius of the tread portion of said tire at a place arcuately spaced away from the portion of the tire being deflected by the load roll; E. removing material from at least one of the lateral margins of the tRead in amount and angular location tending to reduce the variations in radial load experienced by said roll; and F. concurrently removing material from the tread between said lateral margins in amount and location tending to reduce said variation in radius of the tread portion of said tire.
Claim 8
Independent Claim
142 words
The method of reducing variations of force and of radius in a tire comprising: A. mounting said tire on a rotatable chuck; B. moving a rotatable radial load sensing roll into tire deflecting engagement with said tire; C. sensing variations in radial load experienced by said roll as said tire rotates; D. measuring variations in radius of the tread portion of said tire at a place arcuately spaced away from the portion of the tire being deflected by the load roll; E. removing material from at least one of the lateral margins of the tRead in amount and angular location tending to reduce the variations in radial load experienced by said roll; and F. concurrently removing material from the tread between said lateral margins in amount and location tending to reduce said variation in radius of the tread portion of said tire.
Claim 9
Dependent Claim
36 words
In the method as claimed in claim 5, removing material according to step (F) in successive small radial increments, each such increment being associated with at least one complete revolution of the tire about its axis.
Claim 10
Dependent Claim
29 words
In the method as claimed in claim 5, wherein removal of material according to steps (E) and (F) is effected over less than the complete circumference of the tire.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |