COILED SPRING AND LOCKING ELEMENT (VERSIONS) Russian patent published in 2009 - IPC F16F1/10 F16K3/28 

FIELD: machine building.

SUBSTANCE: invention relates to hydraulic automatic control hardware and can be used in machine hydraulic drives. The proposed spring represents a tape with inner and outer ends and forms load bearing surfaces on interacting parts. It features high flexural softness and low internal friction, and is coiled within the limits of elastic strain. Its inner and outer ends are connected with the tape. The locking device comprises the body, fixed seat with through orifices and locking tape element connected with the control element. The said control element can either reciprocate or make reciprocating revolutions. The aforesaid locking tape element represents a coiled or helical spring. The said spring is flexibly squeezed between the said seat and control element to form, with both, the contact surfaces. In compliance with the second version, the locking device incorporates a locking element that represents a multi-layer flexible tape or a coiled spring. The said spring jumps, together with the seat, aforesaid through orifices. It features permeable and impermeable zones in areas wherein it jumps the orifices. The permeable zones are located directly above the through orifices to communicate with them and are restricted between the seat and impermeable zones.

EFFECT: improved performances, simpler design, smaller sizes, reduced labour input.

9 cl, 18 dwg