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US3701402A Expired / Lapsed US ⏱️ 0.0 years remaining

Vibration damper for vehicles

Assignee: LE I INZH ZHELEZNOFOROZHNOGO T
•
Filing: 1970-02-03
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Granted: 1972-10-31
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Expires: 1990-02-03
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Abstract

Abstract A vibration damper for vehicles, particularly, for railway vehicles is disclosed, which comprises a single-acting working cylinder cooperating with a piston carried by a piston rod, this working cylinder forming thereinside a working or piston chamber communicating with a working fluid supply reservoir, the latter being disposed below or at a lower level than the closure seal through which the piston rod extends. Disposed adjacent to the bottom of this supply reservoir is a valve controlling communication through a working fluid replenishing passage, this valve being mounted in a structure having a space thereinside, adapted to establish a hydraulic seal therein; this space communicates, on the one hand, through a throttling passage with the piston chamber of the working cylinder, and, on the other hand, with the supply reservoir through the working fluid replenishing passage. Moreover, with the working cylinder of the vibration damper disposed horizontally, the throttling passage is adapted to establish fluid communication between the upper extremity of the piston chamber and the working fluid supply reservoir; the valve controlling communication through the replenishing passage being disposed adjacent to the bottom of the supply reservoir, below the level of the working fluid filling the supply reservoir in operation of the vibration damper. The above-mentioned structure, which is a removable one, receives thereinside the throttling passage and the replenishing passage, the valve controlling communication trough the replenishing passage and a safety valve.

Inventors

  • 👤 Ivan Ivanovich Chelnokov
  • 👤 Mikhailovich Garbuzov
  • 👤 Vladimir Andreevich Koshelev
  • 👤 Georgy Mikhailovich Levit
  • 👤 Albert Alexandrovich Maltsev
  • 👤 Vladimir Fedorovich Myachev

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:30
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/3207; F16F9/10; F16F9/14; F16F9/16; F16F9/18; F16F9/185

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 330 words
A vibration damper for vehicles comprising: a single-acting working cylinder provided with a piston chamber therein, said piston chamber being adapted to be filled with a working fluid, said cylinder being adapted for operation in horizontal attitude and having opposite ends; a piston and a piston rod carrying said piston, said piston and said piston rod being reciprocally received in the chamber in said working cylinder; a closure seal for said piston rod disposed in said chamber adjacent to one end of said working cylinder, said piston rod extending in sealed relation through said closure seal; a working fluid replenishing passage means on the cylinder at the other end thereof; a supply reservoir for said working fluid disposed at a lower level than said closure seal and being adapted to communicate with said piston chamber of said working cylinder through said working fluid replenishing pas-sage means; a throttling passage means on said other end of the cylinder; a structure on said other end of said cylinder and provided with a hollow space thereinside, a hydraulic seal means in said space, said space communicating, on the one hand, with said piston chamber of said working cylinder through said throttling passage means and, on the other hand, with said working fluid replenishing passage means; control valve means; and safety valve means, said safety valve means and control valve means being located at opposite ends of said working fluid replenishing passage means and respectively adjacent said space and said supply reservoir to respectively control the flow of working fluid from said replenishing passage means into said space and from the reservoir into said replenishing passage means; said damper further comprising a housing encircling said cylinder and supporting said reservoir in depending relation on said cylinder, said housing defining with said cylinder an annular space comMunicating with the piston chamber and said reservoir respectively through openings provided in said housing, said hydraulic seal means separating said throttle passage means and said replenishing passage means.
Claim 2
Dependent Claim 330 words
A vibration damper for vehicles comprising: a single-acting working cylinder provided with a piston chamber therein, said piston chamber being adapted to be filled with a working fluid, said cylinder being adapted for operation in horizontal attitude and having opposite ends; a piston and a piston rod carrying said piston, said piston and said piston rod being reciprocally received in the chamber in said working cylinder; a closure seal for said piston rod disposed in said chamber adjacent to one end of said working cylinder, said piston rod extending in sealed relation through said closure seal; a working fluid replenishing passage means on the cylinder at the other end thereof; a supply reservoir for said working fluid disposed at a lower level than said closure seal and being adapted to communicate with said piston chamber of said working cylinder through said working fluid replenishing pas-sage means; a throttling passage means on said other end of the cylinder; a structure on said other end of said cylinder and provided with a hollow space thereinside, a hydraulic seal means in said space, said space communicating, on the one hand, with said piston chamber of said working cylinder through said throttling passage means and, on the other hand, with said working fluid replenishing passage means; control valve means; and safety valve means, said safety valve means and control valve means being located at opposite ends of said working fluid replenishing passage means and respectively adjacent said space and said supply reservoir to respectively control the flow of working fluid from said replenishing passage means into said space and from the reservoir into said replenishing passage means; said damper further comprising a housing encircling said cylinder and supporting said reservoir in depending relation on said cylinder, said housing defining with said cylinder an annular space comMunicating with the piston chamber and said reservoir respectively through openings provided in said housing, said hydraulic seal means separating said throttle passage means and said replenishing passage means.
Claim 3
Dependent Claim 52 words
A vibration damper, according to claim 1, wherein said working cylinder is disposed substantially horizontally, said throttling passage means communicating with the upper extremity of said piston chamber of said working cylinder and being adapted to establish communication between said upper extremity of said piston chamber and said working fluid supply reservoir.
Claim 4
Dependent Claim 50 words
A vibration damper, according to claim 2, wherein said working fluid supply reservoir has a bottom, said valve controlling communication through said working fluid replenishing passage means being disposed adjacent to said bottom of said reservoir, below the level of said working fluid thereinside in operation of said vibration damper.
Claim 5
Dependent Claim 30 words
A vibration damper, according to claim 3, wherein, said structure removably accomodates thereinside said throttling passage means, said replenishing passage means, said control valve means and said safety valve means.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-31 1976-05-01 1976-10-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-31 1980-05-01 1980-10-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-31 1984-05-01 1984-10-31 $7700.00 Window Closed / Lapsed

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