Patent ID: 9358905
Filing Date: 2016-06-07
CPC Classification: A61G,B60N,F04C,F15B

Claim Text:
1. A hydraulic chair lift for arrangement in a vehicle comprising: a rod attached to a floor of the vehicle on a first end and a roof zone of the vehicle on a second end; a piston arranged around the rod in a middle zone of the rod; a barrel enveloping the piston, and two heads, wherein a first head is arranged on a first end of the barrel and a second head is arranged on a second end of the barrel, wherein the first head and the second head are each provided with a channel for passage of the rod, and wherein a rod gland that surrounds the channel is arranged in each of the first head and the second head, wherein the channel includes a first inner channel part with a first diameter and a second inner channel part with second diameter, wherein the first diameter is smaller than the second diameter, and wherein the ratio of the length and the diameter of the first channel part is less than 3/5.