Multimatic Inc.

Andrew Tomlin

Laurence James Holt

Damian O'Flynn

A hydraulic damper spool valve () includes a pair of resilient energy storage members () one of which is disposed between each of a valve spool () and a valve body dividing section () so as to bias the valve spools () in opposing directions to the forces generated by the operating pressures in the hydraulic fluid of the hydraulic damper (). The valve spools () are configured to vary the hydraulic flow restriction between the upper portion () and the lower portion () of the hydraulic damper (). A compression hydraulic flow path is structurally separate from a rebound hydraulic flow path to prevent backflow via the other hydraulic flow path during hydraulic flow in either direction, each said flow path communicating with only the at least one shaped aperture () adjacent the opposing end of one of the valve sleeves ().

Advanced hydraulic damper spool valve

A hydraulic damper assembly includes a main body, a shaft assembly and a main piston operatively configured to define an upper portion and a lower portion within the main body. A hydraulic damper spool valve is adapted to provide a single path, variable hydraulic flow restriction between the upper portion and lower portion of the main body. The hydraulic damper spool valve is configured with an array of precisely shaped flow apertures that are proportionally opened and closed by a pair of valve spools in response to the pressure differential across the main piston. The damper's pressure-flow operating characteristic is simply and predictably dictated by the geometric configuration of the shaped flow apertures. The precisely defined open area of the shaped flow apertures provides a mathematically predictable hydraulic flow restriction that operates predominately in a turbulent regime resulting in insensitivity to hydraulic fluid viscosity and consequently temperature change.

Growing community of inventors

Newmarket, United Kingdom

Andrew Tomlin