Kelsey-hayes Company

William D Doyle

Joseph A Starr

Gregory J Krawczyk

Gary R Knight

Gary A Willi

David E Collins

Leon Leventhal

Nikolaos Manolios

Peter J Luzenski

Kenneth Greco

Jeff Thompson

Tim Ferguson

An electromagnetic valve for use in controlling fluid flow between first and second passageways in a hydraulic valve block includes a valve body. The valve body defines a central axis, has a central opening therethrough, and has a lower end adapted to be inserted into a bore of the valve block. A hollow valve dome is attached to an upper end of the valve body. An armature is axially moveable within the valve dome. A spring biases the armature in one axial direction. A closing element is coupled to a lower end of the armature. An electromagnetic coil coaxially surrounds the armature and is operable to effect axial movement of the armature in an axial direction opposite the one axial direction. A valve seat member is carried by a lower end of the valve body and has an orifice providing fluid flow between the first and second valve block passageways. The valve seat member defines a valve seat that surrounds the orifice and cooperates with the closing element for selectively closing the orifice. The valve seat member is formed as a deep drawn part and includes a tubular portion having one end defining a valve seat, and an opposite end connected to the valve body.

Electromagnetic valve

An electromagnetic valve () for use in controlling fluid flow between first and second passageways (P, P) in a hydraulic valve block (), includes a valve body (). The valve body () defines a central axis (A), has a central opening (A) therethrough, has a lower end () adapted to be inserted into a bore () of the valve block (), and is provided with a lower cylindrical opening (). An armature () is axially movable within the valve body () and is biased by a spring in one axial direction (A). A closing element () is carried by a lower end () of the armature (). An electromagnetic coil () coaxially surrounds the armature () and is operable to effect axial movement of the armature () in an axial direction opposite the one direction (B). A valve seat member () is carried by the lower end () of the valve body () and has an orifice () providing fluid flow between the first and second valve block passageways (P, P). The valve seat member () defines a valve seat () surrounding the orifice () and cooperates with the closing element () for selectively closing the orifice (). The valve seat member () includes a cylindrical tubular portion () frictionally retained in the lower cylindrical opening () of the valve body (). The lower cylindrical opening () of the valve body () is provided with a stop surface () at the upper end of thereof, and an upper part () of the cylindrical portion () of the valve seat member () includes a flange () engageable with the stop surface () for limiting downward movement of the valve seat member () relative to the valve body ().

A lip seal having an annular body, a contiguous annular shoulder extending axially therefrom, and a contiguous annular seal lip extending coaxially from the body and flaring away from the shoulder. Strengthening ribs extend axially along the shoulder, the shoulder is undercut to provide space into which areas of the annular seal lip can escape, with each such feature thereby promoting nonuniform deformation of the annular seal lip, ensuring a path for fluid to flow, and thereby minimizing the possibility of a seal lock-up condition occurring when pressure is applied to the back of the lip seal during brake release. Flow ribs axially coextensive with the strengthening ribs also extend along the body to create fluid flow paths therebetween. The radial dimensions of the lip seal are also reduced to allow a valve cartridge of given diameter to function in a smaller housing bore than that required when a conventional lip seal is used, thus facilitating the downsizing of a control valve module in which the valve cartridge is to be used.

Lip seal for antilock braking system isolation valve and similar valves

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Chelsea, MI, United States of America

William D Doyle