Patent ID: 7926633

Claim:
A shock absorber for an aircraft undercarriage, the shock absorber comprising a main cylinder in which a rod is mounted to slide telescopically, the shock absorber having at least one pneumatic chamber filled with gas, a supply of hydraulic fluid, and throttle means for throttling the hydraulic fluid such that when the shock absorber is shortened, the gas in the at least one pneumatic chamber is compressed and the hydraulic fluid is throttled, in which the at least one pneumatic chamber is fully contained in at least one auxiliary cylinder external to the main cylinder, and in each of which a sealed piston is slidably mounted to separate a pneumatic chamber contained in said external auxiliary cylinder from a fluid chamber in fluid flow communication with the main cylinder, wherein the throttle means are disposed at the inlet of a fluid flow connection between the main cylinder and the at least one auxiliary cylinder, and wherein the at least one auxiliary cylinder is rigidly fastened to the main cylinder and extends in a direction that is substantially perpendicular to a longitudinal axis of the shock absorber.