Patent US3786848A successfully refreshed from Google Patents.
US3786848A
Expired / Lapsed
US
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Deflector ring for tire
Assignee: Caterpillar Inc
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Filing: 1972-04-24
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Granted: 1974-01-22
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Expires: 1992-04-24
Abstract
Abstract A tire has an annular tread forming a plurality of circumferentially spaced tread bars thereon. A circumferentially continuous deflection ring is formed at the juncture of the tread with each tire sidewall to project beyond such sidewall to provide full protection thereat during tire operation.
Inventors
- 👤 G Grant
- 👤 C Sons
- 👤 W Brown
- 👤 R Fabere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:05
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/0311
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A tire disposed for rotation about a central axis thereof comprising an annular tread, sidewalls extending radially inwardly from and on each side of said tread toward said axis, a plurality of axially disposed circumferentially spaced inwardly extending tread bars formed on said tread adjacent to a respective one of said sidewalls forming slots between each pair of adjacent bars, said slots being tapered to diverge axially outwardly towards its respective sidewall, said bars on one sidewall being staggered with respect to the bars on the other sidewall, whereby each bar is axially positioned opposite a slot, said bars terminating at an inward point thereby providing a generally smooth and uninterrupted centrally disposed annular surface, and a circumferentially continuous deflector ring means formed at the juncture of each sidewall with said tread to project outwardly in the direction of said axis, beyond a respective sidewall, to fully protect such sidewall when said tire is in both its unloaded and loaded conditions of operation.
Claim 2
Dependent Claim
163 words
A tire disposed for rotation about a central axis thereof comprising an annular tread, sidewalls extending radially inwardly from and on each side of said tread toward said axis, a plurality of axially disposed circumferentially spaced inwardly extending tread bars formed on said tread adjacent to a respective one of said sidewalls forming slots between each pair of adjacent bars, said slots being tapered to diverge axially outwardly towards its respective sidewall, said bars on one sidewall being staggered with respect to the bars on the other sidewall, whereby each bar is axially positioned opposite a slot, said bars terminating at an inward point thereby providing a generally smooth and uninterrupted centrally disposed annular surface, and a circumferentially continuous deflector ring means formed at the juncture of each sidewall with said tread to project outwardly in the direction of said axis, beyond a respective sidewall, to fully protect such sidewall when said tire is in both its unloaded and loaded conditions of operation.
Claim 3
Dependent Claim
28 words
The invention of claim 1 wherein the axial width of said annular tread portion approximates one-third of the axial width of said tiRe between said deflector ring means.
Claim 4
Dependent Claim
28 words
The invention of claim 1 wherein the circumferential length of each of said tread bars approximates one and one-half times the circumferential length of each of said slots.
Claim 5
Dependent Claim
36 words
The invention of claim 1 wherein a bottom surface defining a bottom of each slot, extending between each pair of circumferentially adjacent tread bars, at least approximately intersects an apex of a respective deflector ring means.
Claim 6
Dependent Claim
44 words
The invention of claim 4 wherein each of said tread bars comprises a radially outer top surface positioned radially outwardly from a bottom surface of a respective slot and an axially outer side surface intersecting said top surface and a respective deflector ring means.
Claim 7
Dependent Claim
27 words
The invention of claim 5 wherein said side surface at least approximately intersects the intersection of said bottom surface with the apex of said deflector ring means.
Claim 8
Dependent Claim
42 words
The invention of claim 5 wherein at least a substantial portion of said bottom surface forms an acute angle with said side surface which remains at least approximately constant upon deflection of said tire from an unloaded condition to a loaded condition.
Claim 9
Dependent Claim
11 words
The invention of claim 7 wherein said acute angle approximates 35*.
Claim 10
Dependent Claim
36 words
The invention of claim 7 wherein an acute angle defined between an imaginary ground plane, parallel to said axis, and said top surface approximates 25* in said unloaded condition and zero degrees in said loaded condition.
Claim 11
Dependent Claim
31 words
The invention of claim 9 wherein an acute angle defined between said imaginary ground plane and said side surface approximates 70* in said unloaded condition and 55* in said loaded condition.
References Cited (Backward Citations)
US2971552A
Cited
FR1452787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |