Vibration damper
AssigneeGM Global Technology Operations LLC
InventorRobert P. Marble
Life of this patent
Estimating the term…
Abstract
A vibration damper includes a housing and a piston rod construct and arranged to reciprocate along an axis and with respect to the housing. The housing defines first and second ports. A chamber is defined by the housing and the piston rod and is in fluid communication between the first and second ports. A translating isolator of the damper is located in the chamber and is in sealing contact with the piston rod and the housing. The isolator translates in a first direction toward the first port when the piston rod moves in the first direction and translates in an opposite second direction toward the second port when the piston rod moves in the second direction.
Claims11
A vibration damper comprising:
- a housing defining first and second openings;
- a piston rod constructed and arranged to reciprocate along an axis and with respect to the housing, wherein a chamber is defined by the housing and the piston rod and is in fluid communication between the first and second openings;
- and
- an isolator disposed in the chamber and in sealing contact with the piston rod and the housing, and wherein the isolator translates in a first direction toward the first opening when the piston rod moves in the first direction and translates in an opposite second direction toward the second opening when the piston rod moves in the second direction, wherein the housing extends circumferentially about the piston rod, the chamber is annular in shape, the isolator is ring shaped, the isolator is an o-ring, and the isolator is in rolling contact with the housing and the piston rod.
A telescoping damper comprising:
- a piston rod constructed and arranged to reciprocate along an axis;
- a housing extending circumferentially about the piston rod, defining a plurality of axially spaced ports, defining at least in-part at least one passage in fluid communication between the plurality of ports, and wherein at least one annular chamber is defined radially between the housing and the piston rod;
- first and second seals carried between and in contact with the piston rod and the housing, wherein the first seal is spaced axially from the second seal and the at least one annular chamber is axially disposed between the first and second seals;
- and
- at least one rolling isolator disposed in the at least one chamber for axial translation between and over the plurality of ports, wherein the at least one rolling isolator is in resilient contact with the housing and the piston rod.
Dependencies are inferred from the claim text.