US3799066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient railway truck suspension
Assignee: GSI ENGINEERING Inc A CORP OF
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Filing: 1972-12-26
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Granted: 1974-03-26
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Expires: 1992-12-26
Abstract
Abstract A resilient railway truck and vehicle suspension provides soft body springing while reducing axle to axle load transference. The axle-supported truck frame swivelly mounts a transverse subbolster and a transverse bolster is carried on the sub-bolster by elastomeric pad devices oppositely inclined longitudinally of the truck so that their normals intersect at a level below the axles, preferably about rail level. The bolster supports the body by upright springs at each side of the truck and is restrained against longitudinal movement or tilting movement about its transverse axis with respect to the body so that tipping movements of the truck relative to the body including those necessary to accommodate to changes in vertical track curvature occur about the intersection of the elastomeric pad device normals, thereby reducing or eliminating any vertical moment arm through which the tractive forces might act on the truck to cause objectionable axle to axle load transference.
Inventors
- 👤 K Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/22; B61F5/24; B61F3/00; B61F3/02; B61F3/04
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
109 words
A railway vehicle suspension comprising longitudinally spaced wheeled axles, a truck frame supported on said axles, a transverse sub-bolster swivelly supported on said truck frame and restrained against tilting longitudinally thereof, a bolster, means supporting said bolster on said sub-bolster for tilting movements thereon about an axis transverse of the truck at a lower level than said axles, upright springs seated on said bolster at both sides of the truck, vehicle body structure carried on said springs and means holding said bolster against tipping movements about an axis transverse of the body structure and longitudinal movements, both with respect to the body structure, while permitting relative vertical movements therebetween.
Claim 2
Dependent Claim
109 words
A railway vehicle suspension comprising longitudinally spaced wheeled axles, a truck frame supported on said axles, a transverse sub-bolster swivelly supported on said truck frame and restrained against tilting longitudinally thereof, a bolster, means supporting said bolster on said sub-bolster for tilting movements thereon about an axis transverse of the truck at a lower level than said axles, upright springs seated on said bolster at both sides of the truck, vehicle body structure carried on said springs and means holding said bolster against tipping movements about an axis transverse of the body structure and longitudinal movements, both with respect to the body structure, while permitting relative vertical movements therebetween.
Claim 3
Dependent Claim
43 words
A railway vehicle suspension according to claim 1 wherein said supporting means comprises a pair of longitudinally oppositely inclined elastomeric pad devices seated on said sub-bolster at each side of the truck with their normals intersecting at a lower level than said axles.
Claim 4
Dependent Claim
23 words
A railway vehicle truck according to claim 2 wherein said elastomeric pad devices are of generally V-shaped cross section transversely of the truck.
Claim 5
Dependent Claim
22 words
A railway vehicle truck according to claim 2 wherein said pad devices are flat and are horizontally disposed transversely of the truck.
Claim 6
Dependent Claim
50 words
A railway vehicle suspension according to claim 4, including means preventing relative swivel movements between said sub-bolster and said bolster while accomodating relative tipping movements of said bolster and said sub-bolster about the axis transverse of the truck defined by the intersections of the normals of said elastomeric pad devices.
Claim 7
Dependent Claim
43 words
A railway vehicle suspension according to claim 5 wherein said swivel preventing means comprises a pair of transversely extending anchor links spaced apart longitudinally of the truck and connected at one end to said sub-bolster and at the opposite end to said bolster.
Claim 8
Dependent Claim
42 words
A railway vehicle suspension according to claim 2 wherein said truck frame and said sub-bolster are formed with longitudinally spaced apart opposed horizontal bearing means whereby to prevent said sub-bolster from tipping longitudinally of the truck with respect to said truck frame.
Claim 9
Dependent Claim
24 words
A railway vehicle suspension according to claim 7 wherein there are a pair of said opposed bearing means at each side of the truck.
Claim 10
Dependent Claim
59 words
A railway vehicle suspension according to claim 1 wherein said holding means comprises a pair of vertically spaced parallel longitudinally extending anchor links and at least one additional anchor link transversely spaced from said first-named anchor links, each of said anchor links being connected at one end to said bolster and at the other end to said body structure.
Claim 11
Dependent Claim
46 words
A railway vehicle suspension according to claim 1 wherein said holding means comprises a pair of vertically spaced parallel longitudinally extending anchor links at each side of the truck each connected at one end to said bolster and at the other end to said body structure.
Claim 12
Dependent Claim
40 words
A railway vehicle suspension according to claim 1 wherein said upright springs are yieldable transversely of the truck to permit lateral movement of said body with respect to said bolster and said holding means is constructed to accommodate such movement.
Claim 13
Dependent Claim
24 words
A railway vehicle suspension according to claim 1, including traction motors supported from said truck frame and drivingly connected to the respective wheeled axles.
Claim 14
Dependent Claim
105 words
A railway veHicle truck comprising longitudinally spaced wheeled axles, a truck frame supported on said axles, a transverse sub-bolster swivelly supported on said truck frame and restrained against tilting longitudinally thereof, a bolster, means supporting said bolster on said sub-bolster for tilting movements thereon about an axis transverse of the truck at a lower level than said axles, upright body support springs seated on said bolster at both sides of the truck, and means adapted to hold said bolster against tipping movements about an axis transverse of the truck and longitudinal movements, both with respect to a supported body, while permitting relative vertical movements therebetween.
Claim 15
Dependent Claim
105 words
A railway veHicle truck comprising longitudinally spaced wheeled axles, a truck frame supported on said axles, a transverse sub-bolster swivelly supported on said truck frame and restrained against tilting longitudinally thereof, a bolster, means supporting said bolster on said sub-bolster for tilting movements thereon about an axis transverse of the truck at a lower level than said axles, upright body support springs seated on said bolster at both sides of the truck, and means adapted to hold said bolster against tipping movements about an axis transverse of the truck and longitudinal movements, both with respect to a supported body, while permitting relative vertical movements therebetween.
Claim 16
Dependent Claim
45 words
A railway vehicle truck according to claim 13 wherein said holding means comprises a pair of vertically spaced parallel longitudinally extending anchor links at each side of the truck connected at one end to said bolster and at the other end to said body structure.
Claim 17
Dependent Claim
42 words
A railway vehicle truck according to claim 13 wherein said supporting means comprises a pair of longitudinally inclined elastomeric pad devices seated on said subbolster at each side of the truck with their normals intersecting at a lower level than said axles.
Claim 18
Dependent Claim
50 words
A railway vehicle truck according to claim 15, including means preventing relative swivel movements between said sub-bolster and said bolster while accommodating relative tipping movements of said bolster and said sub-bolster about the axis transverse of the truck defined by the intersections of the normals of said elastomeric pad devices.
Claim 19
Dependent Claim
45 words
A railway vehicle truck according to claim 15 wherein said holding means comprises a pair of vertically spaced parallel longitudinally extending anchor links at each side of the truck connected at one end to said bolster and at the other end to said body structure.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |