US4406316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel and low air pressure tire combination
Assignee: Bridgestone Corp
•
Filing: 1981-12-22
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Granted: 1983-09-27
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Expires: 2001-12-22
Abstract
Abstract A wheel for a low air pressure tire suitable for use in agricultural machines such as a binder and comprising a rim portion including a pair of bead seats and a disc portion made integral with the rim portion. Each of the bead seats is provided at its inside with a ridge. The bead portions of the tire are engaged with the bead seats and firmly secured between a fixed flange formed at the outside of one of the bead seats and the ridge on the one hand and between a flange ring engaged with an annular groove and provided along its periphery with a slit and the ridge on the other hand.
Inventors
- 👤 Satoru Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:43
CPC Classifications
B; B60; B60B; B60B21/00; B60B21/10; B60B25/00; B60B25/04; B60B25/14; B60B25/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
In combination, a wheel having a rim portion and a low air pressure tire having a tread portion of extremely high rigidity and having substantially undeformable bead portions seated on said rim portion; said wheel rim portion including a pair of bead seats and a disc portion made integral with said rim portion; a ridge arranged at the inside of each of said bead seats and having a side surface substantially perpendicular to said bead seat, a fixed flange formed at the outside of one of said bead seats, an annular groove formed at the other seat, an annular depression located between said ridges and having a depth which is larger than the height of said fixed flange and a width which is wider than the total sum of the widths of the beads of said tire, a flange ring engaged with said annular groove and provided along at its periphery with a slit, and wherein the bead seat adjacent to said annular groove is gradually reduced in diameter toward the outside of the bead seat.
Claim 2
Dependent Claim
176 words
In combination, a wheel having a rim portion and a low air pressure tire having a tread portion of extremely high rigidity and having substantially undeformable bead portions seated on said rim portion; said wheel rim portion including a pair of bead seats and a disc portion made integral with said rim portion; a ridge arranged at the inside of each of said bead seats and having a side surface substantially perpendicular to said bead seat, a fixed flange formed at the outside of one of said bead seats, an annular groove formed at the other seat, an annular depression located between said ridges and having a depth which is larger than the height of said fixed flange and a width which is wider than the total sum of the widths of the beads of said tire, a flange ring engaged with said annular groove and provided along at its periphery with a slit, and wherein the bead seat adjacent to said annular groove is gradually reduced in diameter toward the outside of the bead seat.
Claim 3
Dependent Claim
48 words
The wheel and low air pressure tire according to claim 1, wherein said flange ring is provided with a projection facing toward the inside of the bead seat, the front end of said projection being aligned with said bead seat in the same or substantially the same plane.
Claim 4
Dependent Claim
57 words
The wheel and low air pressure tire according to claims 1 or 2 wherein the portion of said flange ring engaging the annular groove is tapered to gradually enlarge toward the inside of said bead seat to facilitate engagement of said flange ring on said annular groove after said tire has been mounted on said rim portion.
Claim 5
Dependent Claim
32 words
The wheel and low air pressure tire according to claim 1 wherein said slit is a butt joint normally closing said slit when said flange ring is engaged with said annular groove.
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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) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |