CONTROLLABLE MEMBER FOR HYDROPNEUMATIC AUTOMATION SYSTEMS Russian patent published in 2004 - IPC

FIELD: control of fluid media.

SUBSTANCE: proposed controllable member includes body with passages for delivery and reversal motion of flow of working medium, spool valve pair and return spring; spool valve of control member is made in form of hermetic anisotropic envelope communicated with energy carrier; spool valve pair is formed by external surface of hermetic anisotropic envelope and internal profiled surface of body; control of motion of working medium is effected due to change of geometric sizes of envelope at varying parameters of energy carrier; body has at least isolated cavities; one cavity is provided with passages for delivery and reversal motion of working medium; it also includes hermetic anisotropic envelope; second cavity contains elastic envelope; internal surface of body communicated with anisotropic envelope is profiled and is provided with at least two radial passages along length of body and one axial passage; one radial passage is engageable with hermetic anisotropic envelope over its lateral surface in bearing part; second side passage is not engageable with hermetic anisotropic envelope and axial passage is engageable with end surface of hermetic anisotropic envelope.

EFFECT: enhanced reliability.

4 cl, 4 dwg