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Patent Searching and Data


Title:
SHOCK ABSORBING SPRING
Document Type and Number:
WIPO Patent Application WO2003067116
Kind Code:
A3
Abstract:
The invention refers to a spring shock absorber destined especially for buffers and traction devices of the rail vehicles; while it may have other applications as well, in others technical domains where it is necessary to absorb shocks. The shock absorbing spring, according to present invention, is composed by a tubular cylinder (1), or ring-shaped cylinder Z sealed at one end and divided by a diaphragm a with central guiding and sealing system (b), into two coabal rooms (c) and (d), in room (d) being mounted a piston (3) or several concentric pistons (4, 6) respective (6, 7), piston having its head (e) set at certain distances to the ends of the piston's rod, a rod f from one end of the piston's head (e) being mounted into the guiding and sealing system (b), while the other rod (g) from the other end of the piston's head being mounted into the guiding and sealing system (h) made of a cap (8) that closes the room d of the cylinder. Room (c) is filled with gas or compressible crude rubber (9) at a certain pressure level, and the room (d) is filled with hydraulic oil (10) at atmospheric pressure. The rooms (c) of the cylinders of the shock absorbing springs mounted into the shock or traction devices of the railcars can be interconnected in various configurations, ensuring the adaptation of the force - travel characteristic depending on the railcar situation (whether it is passing through curves, applying shocks to an isolated railcar or to a railcar in a convoy).

Inventors:
OTLACAN DIMITRIE DANUT (RO)
Application Number:
RO0200023W
Publication Date:
November 06, 2003
Filing Date:
October 22, 2002
Export Citation:
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Assignee:
OTLACAN DIMITRIE DANUT (RO)
International Classes:
F16F9/00; F16F9/06; F16F9/18; F16F9/20; F16F9/22; F16F13/06; (IPC1-7): B61F5/12; F16F9/26
Foreign References:
RO113229B
US3913495A1975-10-21
US3817506A1974-06-18
US3614931A1971-10-26
US2873963A1959-02-17
US2029829A1936-02-04
FR1216426A1960-04-25
FR353087A1905-09-01
DE2410166A11975-09-11
FR1120705A1956-07-11
GB1531565A1978-11-08
US3328019A1967-06-27
FR2146814A51973-03-02
DE2020930A11971-11-25
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