Elevational adjustment device
OwnerJong-Jyr Kauinventor
Life of this patent
Estimating the term…
Abstract
An elevational adjustment device comprises an object to be supported; at least one cylinder assembly located below the object to be supported for supporting the object to be supported; each of the cylinder assembly including: an inner tube surrounding the spindle; a bottom of the inner tube being installed with a valve block; the valve block having an opening; the enlarged portion at the lower end of the spindle sealing an opening of the valve block; a sub-tube surrounding the inner tube; a sleeve surrounding the sub-tube. The overall structure is divided into a first receiving chamber, a second receiving chamber and a third receiving chamber. Communication of the fluids in the receiving chambers are controlled so as to lift or descend the object to be supported.
Claims6
An elevational adjustment device, comprising:
- an object to be supported;
- at least one cylinder assembly located below the object to be supported for supporting thereto;
- each of the cylinder assembly including:
- a spindle;
- a lower end of the spindle being enlarged as an enlarged portion;
- an inner tube surrounding the spindle;
- a buckle;
- a frame supporting the buckle and being installed at a top of the inner tube;
- the frame being combined to the object to be supported so that the object is combined to the cylinder assembly and compresses the inner tube;
- a bottom of the inner tube being installed with a valve block;
- the valve block having an opening;
- the enlarged portion at the lower end of the spindle sealing an opening of the valve block;
- downward movement of the spindle will push the enlarged portion to be out of an opening;
- a lower end of the inner tube is installed with a limiting flange;
- a through hole being formed on the limiting flange;
- the limiting flange serving to isolate an inner space of the inner tube;
- the through hole being communicated to the opening;
- a lower side of the inner tube being installed with a check valve;
- opening and closing of the check valve being controlled by the enlarged portion of the spindle;
- a sub-tube surrounding the inner tube;
- the limiting flange tightly resisting against an inner side of the sub-tube;
- an upper side of the inner side of the sub-tube above the limiting flange being formed as a first receiving chamber;
- a lower side of the inner side of the sub-tube below the limiting flange being formed as a second receiving chamber which is communicated to the first receiving chamber as the opening is opened;
- and
- a sleeve surrounding the sub-tube;
- a space between the sleeve and the sub-tube being formed as a third receiving chamber;
- fluid flows between the first receiving chamber and the second receiving chamber;
- the second receiving chamber and third receiving chamber have fluids, respectively;
- communication of the fluids in the second receiving chamber and third receiving chamber are controlled by the check valve.
Dependencies are inferred from the claim text.