Patent ID: 9279469
Filing Date: 2016-03-08
CPC Classification: F16F

Claim Text:
1. A delay mechanism of a main rod of a gas spring comprising a body defined by a hollow solid of revolution, in the interior whereof the following are coaxially disposed: a base of the spring disposed on a lower part of the body; a main rod being partially hollow and having a smaller cross-section than the body; and a piston solidarily connected to the main rod, wherein the main rod and the piston are both adapted for moving linearly along the interior of said body, the delay mechanism additionally comprising: a hollow inner rod disposed in the interior of the body fixed to the base; at least one first chamber defined between an inner wall of the body, a lower face of the piston and the inner rod; at least one second chamber defined in a hollow interior of the main rod limited on its lower part by the upper face of the lower rod; at least one third chamber defined by the inner wall of the body, the outer wall of the main rod and the upper face of the piston; a first passage defined in an interior of the inner rod destined for controlling the passage of gas from the first chamber to the second chamber; wherein the delay mechanism further comprises: at least one second passage defined in the wall of the main rod destined for controlling the passage of gas from the third chamber to the second chamber, at least one inner gasket disposed between the inner wall of the piston and the outer wall of the inner rod, and wherein: the piston has the same cross cross-section as that of the interior of the body ( the diameter of the first passage ( the inner rod (