Patent US3913495A successfully refreshed from Google Patents.
US3913495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car bogie suspension system
Assignee: ANF Industrie
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Filing: 1973-04-13
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Granted: 1975-10-21
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Expires: 1993-04-13
Abstract
Abstract A railway vehicle suspension utilizes a pair of helicoidal springs connected directly between the side frames of a bogie and the frame of the car so that the relative turning and horizontal displacement movements of the bogie relative to the pivot pin of the car are accomplished by deformation of the springs.
Inventors
- 👤 Andre E Pelabon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:22
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/14; B61F5/148; B61F5/146; B61F5/16; B61F5/20; B61F5/50; B61F5/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
192 words
In a suspension system for supporting a railway car, said car having an underframe to transmit the weight of the car to at least one downwardly projecting pivot pin, said bogie having a rigid frame means mounted on at least two pairs of track-engaging wheels; the combination including a pair of vertically elongated resilient cushioning means having their respective one ends horizontally fixedly attached at opposite sides of said bogie frame means and their respective other ends horizontally fixedly secured at spaced locations to said under frame, each of said cushioning means being vertically deformable to permit limited independent vertical displacement of each side of the bogie with respect to the car, each of said cushioning means being also laterally deformable to permit limited rotation of the bogie with respect to the car about the vertical axis of the pivot pin means and also to permit limited translatory displacement of the bogie with respect to the car in all directions in a horizontal plane, and linkage means connected between the pivot pin means and the bogie frame means to prevent said translatory displacement with respect to the longitudinal axis of the car.
Claim 2
Dependent Claim
192 words
In a suspension system for supporting a railway car, said car having an underframe to transmit the weight of the car to at least one downwardly projecting pivot pin, said bogie having a rigid frame means mounted on at least two pairs of track-engaging wheels; the combination including a pair of vertically elongated resilient cushioning means having their respective one ends horizontally fixedly attached at opposite sides of said bogie frame means and their respective other ends horizontally fixedly secured at spaced locations to said under frame, each of said cushioning means being vertically deformable to permit limited independent vertical displacement of each side of the bogie with respect to the car, each of said cushioning means being also laterally deformable to permit limited rotation of the bogie with respect to the car about the vertical axis of the pivot pin means and also to permit limited translatory displacement of the bogie with respect to the car in all directions in a horizontal plane, and linkage means connected between the pivot pin means and the bogie frame means to prevent said translatory displacement with respect to the longitudinal axis of the car.
Claim 3
Dependent Claim
36 words
The invention according to claim 1 wherein said suspension system also includes a pair of shock absorbers connected respectively on opposite sides of said pivot pin means between said under frame and main bogie frame means.
Claim 4
Dependent Claim
24 words
The invention according to claim 1, wherein each of said resilient cushioning means comprises two elements composed of materials having different moduli of elasticity.
Claim 5
Dependent Claim
45 words
The invention according to claim 1, wherein said suspension system also includes a pair of power-operable expansible and contractible means connected respectively on opposite sides of said pivot pin means between said under frame and bogie frame means to control lateral inclination of the car.
Claim 6
Dependent Claim
21 words
The invention according to claim 4, wherein said power-operable expansible and contactible means comprises a hydraulically operable piston and cylinder means.
Claim 7
Dependent Claim
33 words
The invention according to claim 5, wherein the one ends of each of said cushioning means is mounted on a piston means, and said cylinder means is attached to said bogie frame means.
Claim 8
Dependent Claim
65 words
The invention according to claim 1, wherein said bogie frame means and said pivot pin means include two respective elements which are movable relative to each other when a bogie is laterally displaced with respect to the car, at least one of said two elements being provided with resilient bumper means engageable with the other respective element to limit the amount of said lateral displacement.
Claim 9
Dependent Claim
87 words
The invention according to claim 7, wherein said bogies comprise two pairs of wheels mounted on two axles, said frame means includes a pair of side bogie frame means extending between the ends of said axles, said side frame means being connected by a pair of spaced transverse beams, and said pivot pin means includes a transverse crossbar positioned between said pair of transverse beams, and a crossbar comprising one of said two relatively movable elements, the side frame means including the other of said two elements.
Claim 10
Dependent Claim
41 words
The invention according to claim 8, wherein each of said side frame means includes a cup-shaped base for one end of said cushioning means and said under frame includes a cup-shaped cap to receive the other end of the cushioning means.
Claim 11
Dependent Claim
16 words
The invention according to claim 9, wherein said under frame comprises essentially an inverted Channel-shaped beam.
Claim 12
Dependent Claim
29 words
The invention according to claim 9, wherein said side frame means includes a vertically disposed hydraulic cylinder, and said base is mounted on a piston movable in said cylinder.
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |