Patent US3719153A successfully refreshed from Google Patents.
US3719153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically dampened car bogie
Assignee: Fried Krupp AG
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Filing: 1971-01-07
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Granted: 1973-03-06
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Expires: 1991-01-07
Abstract
Abstract In combination with the truck center pin-free truck forming a first member of a rail vehicle and with a main frame resiliently supported by said truck and forming a second member of the vehicle. Two double acting fluid operable cylinder piston systems are respectively arranged on opposite sides of the truck while each of the cylinder piston systems has a cylinder pivotally connected to one of said members and has a piston pivotally connected to the other one of said members, each cylinder and piston of one and the same cylinder piston system defining two working chambers,. The working chambers of one and the same cylinder piston system on one side of the truck communicate with the corresponding working chamber of the cylinder piston system on the other side of the truck.
Inventors
- 👤 F Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:59
CPC Classifications
B; B61; B61F; B61F3/00; B61F3/02; B61F3/08; B61F3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
An apparatus for the transmission of the traction and braking forces between a bogie without pivot and the main chassis, resiliently supported thereon, of bogie-type rail vehicles, by means of draw and/or thrust rods which are coupled to the two sides of the vehicle in such a way that pivoting of the bogie about a vertical axis is possible, the improvement therewith comprising that on one of the two vehicle parts, double-acting hydraulic cylinder means including reciprocable pistons are connected with the draw and/or thrust rods coupled to the other part of the vehicle, and including two working chambers of each cylinder means, and conduit connection means joined particularly with the corresponding working chambers of the cylinder means respectively arranged in each case on the other side of the vehicle.
Claim 2
Independent Claim
130 words
An apparatus for the transmission of the traction and braking forces between a bogie without pivot and the main chassis, resiliently supported thereon, of bogie-type rail vehicles, by means of draw and/or thrust rods which are coupled to the two sides of the vehicle in such a way that pivoting of the bogie about a vertical axis is possible, the improvement therewith comprising that on one of the two vehicle parts, double-acting hydraulic cylinder means including reciprocable pistons are connected with the draw and/or thrust rods coupled to the other part of the vehicle, and including two working chambers of each cylinder means, and conduit connection means joined particularly with the corresponding working chambers of the cylinder means respectively arranged in each case on the other side of the vehicle.
Claim 3
Independent Claim
130 words
An apparatus for the transmission of the traction and braking forces between a bogie without pivot and the main chassis, resiliently supported thereon, of bogie-type rail vehicles, by means of draw and/or thrust rods which are coupled to the two sides of the vehicle in such a way that pivoting of the bogie about a vertical axis is possible, the improvement therewith comprising that on one of the two vehicle parts, double-acting hydraulic cylinder means including reciprocable pistons are connected with the draw and/or thrust rods coupled to the other part of the vehicle, and including two working chambers of each cylinder means, and conduit connection means joined particularly with the corresponding working chambers of the cylinder means respectively arranged in each case on the other side of the vehicle.
Claim 4
Independent Claim
130 words
An apparatus for the transmission of the traction and braking forces between a bogie without pivot and the main chassis, resiliently supported thereon, of bogie-type rail vehicles, by means of draw and/or thrust rods which are coupled to the two sides of the vehicle in such a way that pivoting of the bogie about a vertical axis is possible, the improvement therewith comprising that on one of the two vehicle parts, double-acting hydraulic cylinder means including reciprocable pistons are connected with the draw and/or thrust rods coupled to the other part of the vehicle, and including two working chambers of each cylinder means, and conduit connection means joined particularly with the corresponding working chambers of the cylinder means respectively arranged in each case on the other side of the vehicle.
Claim 5
Dependent Claim
31 words
An apparatus according to claim 1, in which means forming elastically acting pressure reservoirs are provided with each conduit connection means, each of said pressure reservoirs being adapted to be refilled.
Claim 6
Dependent Claim
52 words
An apparatus according to claim 2, in which supply and discharge valves are provided in said connection conduit means, and regulating means by which the quantity and pressure of the hydraulic fluid in said conduit connection means can be regulated in case of need, for example for the compensation of leakage losses.
Claim 7
Dependent Claim
17 words
An apparatus according to claim 3, in which safety valves are provided with said connection conduit means.
Claim 8
Dependent Claim
39 words
An apparatus according to claim 1, in which an operator cab is provided including luminous signals actuated through electric contacts on the hydraulic cylinder means for the indication of unacceptably great deviations of the pistons from their middle positions.
References Cited (Backward Citations)
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 |