Resilient tires and wheels – Tires – resilient – Wheel securing means
Patent
1982-03-19
1984-03-27
Marmor, Charles A.
Resilient tires and wheels
Tires, resilient
Wheel securing means
152DIG10, B60B 2518
Patent
active
044387970
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
This invention relates generally to a multiple-piece tire rim assembly for mounting large vehicle tires and more particularly to a sealing arrangement that provides sealing between the tire and rim components only when those components are properly installed.
2. Background Art
Large wheels used on vehicles such as earthmoving apparatus are of multi-piece construction which permit tires to be mounted thereon and locked into sealing engagement without the necessity for deforming the tire beads. The beads of a tubeless tire mounted on such multi-piece tire rim structures are axially restrained on one side by a flange which is either integral with or separate from the rim base and on the other axial side by a second flange which is either integral with or separate from a bead seat band which is mounted radially between the rim base and the remaining bead. The bead seat band is locked to the rim base by various means and a sealing structure is provided for sealing between the bead seat band and the rim base.
A typical configuration for sealing and locking a tire rim assembly is illustrated in U.S. Pat. No. 3,623,530 which issued Nov. 30, 1971, and is assigned to the assignee of the present invention. A sealing O-ring and lock ring are illustrated in the aforementioned patent and are axially separated. Such configuration has the potential to permit partial inflation of the tire if the lock ring is not properly installed or is omitted. U.S. Pat. No. 3,882,919 which issued on May 13, 1975, and is assigned to the assignee of the present invention illustrates an advance in the art by providing a seal in direct contact with the lock ring and having the groove for the seal opening into the groove for the lock ring to enable the seal to be displaced into the lock ring groove in the event that the lock ring is not installed. In the aforementioned patent, if the lock ring was inadvertently omitted, the seal could potentially roll under the bead seat band during inflation due to the axial length of the seal groove thus allowing the tire to be partially inflated. U.S. Pat. No. 2,822,021 illustrates a tire rim assembly having an axially adjacent and engaged seal apparatus and locking ring which cooperate to prevent tire inflation if the locking ring is not properly assembled. However, the apparatus of the aforementioned patent has the disadvantage of potentially allowing the tire to be partially inflated in the event the lock ring is not installed. This is possible because the seal member can be compressed between the bead seat band and the axial outer shoulder of the common seal and lock ring groove.
The present invention is directed to overcoming one or more of the problems as set forth above.
DISCLOSURE OF THE INVENTION
In one aspect of the present invention a multiple-piece tire rim assembly for mounting a tire comprises an annular rim base having an axial center line and an outer periphery defining first and second grooves. The first groove is located in an axially outer portion of the periphery of the rim base and has a depth greater than the second groove. The second groove is located axially inward of the first groove and opens into an inner side of the first groove. An annular bead seat member is disposed radially outside the rim base and has an inner periphery radially adjacent the outer periphery of the rim base. The inner periphery defines an inner surface, a load transferring surface, and an inclined ramp surface located between the inner surface and the load transferring surface. The load transferring surface extends radially outward more than the inclined ramp surface. The load transferring surface and the inclined ramp surface are respectively radially adjacent the first and second grooves. An annular split lock ring has a first portion disposed in axially restraining engagement with the first groove and a second portion in load transferring engagement with the load transfer surface of the bead seat member. An annular elastomeric seal is disposed in the second groove in axi
REFERENCES:
patent: 2822021 (1958-02-01), Shipman et al.
patent: 2884984 (1959-05-01), Riggs
patent: 2894556 (1959-07-01), Darrow
patent: 3118485 (1964-01-01), Le Jeune
patent: 3623530 (1971-11-01), Beyers et al.
patent: 3882919 (1975-05-01), Sons et al.
Burrows J. W.
Caterpillar Tractor Co.
Marmor Charles A.
LandOfFree
Seal for a multipiece wheel assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seal for a multipiece wheel assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal for a multipiece wheel assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1750193