US3603370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: Goodyear Tire and Rubber Co
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Filing: 1969-11-28
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Granted: 1971-09-07
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Expires: 1989-11-28
Abstract
Abstract A rear tractor tire having a tread with alternating long and short lugs on each side, each long lug having an inner portion extending at a low angle with respect to the midcircumferential centerline of the tread and an outer portion extending at a high angle with respect to said circumferential centerline, and each short lug being disposed at a high angle with respect to said midcircumferential centerline. 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 drawings and the following detailed description.
Inventors
- 👤 Edgar W Hylbert
- 👤 Bernd F O Tomaszewski
- 👤 Jacob Kleywegt
- 👤 Hans Dietl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:30
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/0311; B60C2011/0313; B60C2200/00; B60C2200/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
268 words
In a pneumatic tire for tractors and like vehicles wherein the tire has a tread portion, the improvement which includes in the tread portion: two sets of primary lugs and two sets of secondary lugs; each lug of a first set of said primary lugs including a first and second portion, said first portion extending from one lateral edge of the tread approximately onehalf of the distance to the center of the tread at an angle of between 60* and 75* to the midcircumferential centerline of the tread, said second portion extending from the inner end of said first portion across the center of the tread at an angle of between of between 15* and 35* to said midcircumferential centerline; each lug of the second set of primary lugs being similar to said first set of said primary lugs but opposite in hand, extending from the other lateral edge of the tread and being offset circumferentially of said tire with respect to the next adjacent pair of primary lugs in said first set of primary lugs; each lug of a first set of said secondary lugs extending from said one lateral edge of the tread at an angle of between 60* and 75* to said midcircumferential centerline, terminating short of said midcircumferential centerline and being disposed one only between each next adjacent pair of primary lugs in the first set of said primary lugs; each lug of the second set of said secondary lugs being similar to the first set of said secondary lugs but opposite in hand and extending from said other lateral edge of the tread.
Claim 2
Dependent Claim
268 words
In a pneumatic tire for tractors and like vehicles wherein the tire has a tread portion, the improvement which includes in the tread portion: two sets of primary lugs and two sets of secondary lugs; each lug of a first set of said primary lugs including a first and second portion, said first portion extending from one lateral edge of the tread approximately onehalf of the distance to the center of the tread at an angle of between 60* and 75* to the midcircumferential centerline of the tread, said second portion extending from the inner end of said first portion across the center of the tread at an angle of between of between 15* and 35* to said midcircumferential centerline; each lug of the second set of primary lugs being similar to said first set of said primary lugs but opposite in hand, extending from the other lateral edge of the tread and being offset circumferentially of said tire with respect to the next adjacent pair of primary lugs in said first set of primary lugs; each lug of a first set of said secondary lugs extending from said one lateral edge of the tread at an angle of between 60* and 75* to said midcircumferential centerline, terminating short of said midcircumferential centerline and being disposed one only between each next adjacent pair of primary lugs in the first set of said primary lugs; each lug of the second set of said secondary lugs being similar to the first set of said secondary lugs but opposite in hand and extending from said other lateral edge of the tread.
Claim 3
Dependent Claim
31 words
A pneumatic tire as claimed in claim 1 wherein the interior end portion of each lug of said first and second set or primary lugs is enlarged in ground contacting area.
Claim 4
Dependent Claim
109 words
A pneumatic tire as claimed in claim 1 wherein each lug of said first and second sets of secondary lugs includes a first and second portion; each said first portion extending from a lateral edge of the tread approximately one-third of the way to the center of the tread at an angle of beTween 60* and 75* to said midcircumferential centerline; each said second portion of each lug extending from the inner end of said first portion of the lug approximately two-thirds of the distance from said inner end to the center of said tread at an angle of between 40* and 50* with respect to said midcircumferential centerline.
Claim 5
Dependent Claim
26 words
A pneumatic tire as claimed in claim 3 wherein the inner end of each lug of each set of lugs is enlarged in ground contacting area.
Claim 6
Dependent Claim
52 words
A pneumatic tire as claimed in claim 4 wherein each lug of said first and second set of secondary lugs is at the lateral edge of said tread disposed closer to its respective leading primary lug than it is to its respective lagging primary lug at the lateral edge of said tread.
Claim 7
Dependent Claim
44 words
A pneumatic tire as claimed in claim 4 wherein said second portion of each lug of said first set of primary lugs overlaps, circumferentially of said tire, said second portion of a leading and lagging primary lug in said second set of primary lugs.
Claim 8
Dependent Claim
55 words
A pneumatic tire as claimed in claim 6 wherein the portion of each lug of said first and second set of secondary lugs that is disposed at an angle of between 40* and 50* to the midcircumferential circle is laterally opposite the second portion of a primary lug on the opposite side of said tread.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |