US3719154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient side bearing assembly
Assignee: Buckeye Steel Castings Co
•
Filing: 1971-04-13
•
Granted: 1973-03-06
•
Expires: 1991-04-13
Abstract
Abstract Side bearings for a railway freight car having an elastomeric body disposed between the body bolster and the truck bolster. The assembly includes a rigid metal channel member which limits the displacement or distortion of the elastomeric material under compression and thereby limits the swinging movement of the car body relative to the truck bolster.
Inventors
- 👤 D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:46
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/14; B61F5/142
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
A railway vehicle comprising a car body supported on a body bolster having a center plate, a truck bolster having a center bowl, a king pin pivotably connecting the two bolsters together with the center plate disposed in the center bowl, and laterally spaced on each side from said center bowl a side bearing secured to the truck bolster, said side bearing comprising a distortable elastomeric pad distorted under the compressive forces of the weight imposed by the body bolster on the truck bolster when the bolsters are horizontal and the vehicle is empty, said pad being disposed within the cavity of a rigid open ended channel member which is U-shaped in cross-section, is secured to the truck bolster and has its upstanding walls spaced from the elastomeric pad when the bolsters are horizontal and engages said pad and limits its distortion as the body bolster swivels from horizontal and further distorts said pad, the height of said pad being greater than that of said upstanding walls and the distortion of the pad when the bolsters are horizontal being sufficient whereby said side bearing exerts an upward force on the body bolster as it sways upwardly from the truck bolster with rocking of the car from side to side.
Claim 2
Dependent Claim
209 words
A railway vehicle comprising a car body supported on a body bolster having a center plate, a truck bolster having a center bowl, a king pin pivotably connecting the two bolsters together with the center plate disposed in the center bowl, and laterally spaced on each side from said center bowl a side bearing secured to the truck bolster, said side bearing comprising a distortable elastomeric pad distorted under the compressive forces of the weight imposed by the body bolster on the truck bolster when the bolsters are horizontal and the vehicle is empty, said pad being disposed within the cavity of a rigid open ended channel member which is U-shaped in cross-section, is secured to the truck bolster and has its upstanding walls spaced from the elastomeric pad when the bolsters are horizontal and engages said pad and limits its distortion as the body bolster swivels from horizontal and further distorts said pad, the height of said pad being greater than that of said upstanding walls and the distortion of the pad when the bolsters are horizontal being sufficient whereby said side bearing exerts an upward force on the body bolster as it sways upwardly from the truck bolster with rocking of the car from side to side.
Claim 3
Dependent Claim
25 words
The vehicle of claim 1 wherein the cross-section of the pad under maximum compression is substantially equal to the internal cross-section of the channel member.
Claim 4
Dependent Claim
37 words
The side bearing of claim 1 wherein the channel member is arranged transversely on the truck bolster and provides space at its ends which allows said body to distort in shear with swivelling movement of the truck.
Claim 5
Dependent Claim
31 words
The side bearing of claim 3 wherein at least one stud has one end anchored in the elastomeric body and is rigidly secured at the other end to the truck bolster.
Claim 6
Dependent Claim
39 words
The side bearing of claim 4 wherein at least one stud has one end anchored in the elastomeric body and is rigidly secured at the other end to a metal block lying adjacent the underside of the body bolster.
Claim 7
Dependent Claim
18 words
The side bearing of claim 5 wherein the said metal block is rigidly secured to the body bolsteR.
Claim 8
Dependent Claim
23 words
The side bearing of claim 5 wherein the said metal block is in slidable contact with a bearing surface of the body bolster.
Claim 9
Dependent Claim
46 words
The side bearing of claim 1 wherein the elastomeric body projects above the walls of the channel member after further distortion is prevented by the walls and the projecting portion distorts across the upper edges of the walls as additional load is applied on the body.
Claim 10
Dependent Claim
43 words
The side bearing of claim 1 wherein the elastomeric body is compressed about one-half inch by the weight thereon when the transverse axis of the body bolster is substantially horizontal and the total stroke as the car body sways is about one inch.
References Cited (Backward Citations)
US139862A
Cited
US2301372A
Cited
US2777401A
Cited
US2913288A
Cited
US3518948A
Cited
US3556503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |