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1. US20130219873 - NEW MECHANISM FOR FLUID POWER TRANSMISSION AND CONTROL

Office United States of America
Application Number 13880805
Application Date 26.10.2011
Publication Number 20130219873
Publication Date 29.08.2013
Publication Kind A1
IPC
F15B 15/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
18Combined units comprising both motor and pump
CPC
F15B 15/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
18Combined units comprising both motor and pump
Applicants Xu Xuejun
Inventors Xu Xuejun
Priority Data 2010238562 30.10.2010 AU
Title
(EN) NEW MECHANISM FOR FLUID POWER TRANSMISSION AND CONTROL
Abstract
(EN)

This Mechanism introduces a new concept for rotary valves used in fluid power transmission and control. It transforms the rotary motion precisely to axial straight motion. It can also be used as an actuator. There are two sensitive chambers at the ends of the spool. Four helical grooves operate in axial symmetry. The rotary motion of the helical groove changes the connections/distribution between ports and chambers, thus forces the spool to slide to a balanced position.