Transmission pressure regulator

A pressure regulating device for regulating the pressure of a flowing fluid medium, said device comprising;

• a stationary member, a movable armature means disposed axially from said stationary member for moving axially in relation to said stationary member, coil means disposed about said stationary member and said armature means and through which current flows for generating magnetic flux to create an attractive force to move said armature means in relation to said stationary member, housing means disposed about said coil means and said stationary member and said armature means for encasing said armature means and said coil means and said stationary member, aperture means for forming at least one aperture in said housing means to allow a fluid medium to enter and exit said housing means and to contact said armature means, and flow valve means spaced axially from one end of said armature means for moving independently of said armature means to prevent parasitic forces from being transmitted by said flow valve means to said armature means;
• poppet valve means disposed axially between said flow valve means and said armature means for creating a restriction of fluid flow to said armature means;
• first biasing means for continuously biasing said flow valve means toward said poppet valve means;
• a working gap axially disposed between said stationary member and said armature means through which magnetic flux flows to create an attractive force between said stationary member and said armature means;
• adjustment means disposed axially at one end of said armature means for controlling the axial location of said armature means in relation to said poppet valve means;
• said poppet valve means comprising a poppet plate having a poppet aperture through which the fluid medium flows;
• a second biasing means disposed axially between said poppet valve means and said flow valve means for biasing said flow valve means axially away from said armature means to reduce oscillations between said armature means and said flow valve means;
• said second biasing means having a preload less than said first biasing means;
• said aperture means including a first aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a second aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a third aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said second aperture being disposed axially between said first aperture and said third aperture and spaced axially therefrom;
• said flow valve means comprising a spool valve having a first internal passage to allow the fluid medium to flow from said first aperture to said poppet valve means;
• said spool valve having a first end spaced axially from said poppet valve means and a first cavity formed therein;
• said spool valve having a second end axially opposite said first end and a second cavity formed therein;
• and
• said spool valve including a second internal passage to allow the fluid medium to flow from either of said first aperture and said second aperture and said third aperture to said second cavity of said spool valve.

A pressure regulating device for regulating the pressure of a flowing fluid medium, said device comprising;

• a stationary member, a movable armature means disposed axially from said stationary member for moving axially in relation to said stationary member, coil means disposed about said stationary member and said armature means and through which current flows for generating magnetic flux to create an attractive force to move said armature means in relation to said stationary member, housing means disposed about said coil means and said stationary member and said armature means for encasing said armature means and said coil means and said stationary member, aperture means forming at least one aperture in said housing means to allow a fluid medium to enter and exit said housing means and to contact said armature means, flow valve means spaced axially from one end of said armature means for moving independently of said armature means to prevent parasitic forces from being transmitted by said flow valve means to said armature means, poppet valve means disposed axially between said flow valve means and said armature means for creating a restriction of fluid flow to said armature means, first biasing means for continuously biasing said flow valve means toward said poppet valve means, a working gap disposed axially between said stationary member and said armature means through which magnetic flux flows to create an attractive force between said stationary member and said armature means, said poppet valve means comprising a poppet plate having a poppet aperture through which the fluid medium flows, adjustment means disposed axially at one end of said armature means for controlling the axial location of said armature means in relation to the axial location of said poppet plate, a second biasing means disposed axially between said poppet valve means and said flow valve means for biasing said flow valve means axially away from said armature means to reduce oscillations between said armature means and said flow valve means, said second biasing means having a preload less than said first biasing means, said aperture means including a first aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, a second aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said aperture means including a third aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said second aperture being disposed axially between said first aperture and said third aperture and spaced axially therefrom, said flow valve means comprising a spool valve having a first internal passage to allow the fluid medium to flow from said first aperture to said poppet valve means, said spool valve having a first end spaced axially from said poppet valve means and a first cavity formed therein, said spool valve having a second end axially opposite said first end and a second cavity formed therein, said spool valve including a second internal passage to allow the fluid medium to flow from either one of said first and second and third apertures to said second cavity of said spool valve, said spool valve including a recessed portion about the circumference thereof between said ends of said spool valve, said housing means including an end cap in one end thereof opposite said armature means, said first biasing means comprising a first spring disposed between said end cap and said spool valve, said second biasing means comprising a second spring disposed between said first end of said spool valve and said poppet plate, said coil means comprising a magnetic coil to generate magnetic flux, connectors connected to said coil to allow current from an electrical power source to flow to said magnetic coil, a return member disposed adjacent one end of said coil means to create a closed flux loop by allowing magnetic flux to flow from said coil means to said stationary member and said armature means and across said working gap and through said return member to said coil means, said armature means comprising an armature shaft slidably disposed in a central passage in said stationary member and an armature ring disposed about said armature shaft and cooperating with said magnetic coil, said adjustment means comprising a threaded fastener at one end of said armature shaft and threadably engageable with said armature ring.

A pressure regulating device for regulating the pressure of a flowing fluid medium, said device comprising;

• a stationary member, a movable armature means disposed axially from said stationary member for moving axially in relation to said stationary member, coil means disposed about said stationary member and said armature means and through which current flows for generating magnetic flux to create an attractive force to move said armature means in relation to said stationary member, housing means disposed about said coil means and said stationary member and said armature means for encasing said armature means and said coil means and said stationary member, aperture means forming at least one aperture in said housing means to allow a fluid medium to enter and exit said housing means and to contact said armature means, flow valve means spaced axially from one end of said armature means for moving independently of said armature means to prevent parasitic forces from being transmitted by said flow valve means to said armature means, poppet valve means disposed axially between said flow valve means and said armature means for creating a restriction of fluid flow to said armature means, first biasing means for continuously biasing said flow valve means toward said poppet valve means, a working gap disposed axially between said stationary member and said armature means through which magnetic flux flows to create an attractive force between said stationary member and said armature means, said poppet valve means comprising a poppet plate having a poppet aperture through which the fluid medium flows, adjustment means disposed axially at one end of said armature means for controlling the axial location of said armature means in relation to the axial location of said poppet plate, a second biasing means disposed axially between said poppet valve means and said flow valve means for biasing said flow valve means axially away from said armature means to reduce oscillations between said armature means and said flow valve means, said second biasing means having a preload less than said first biasing means, said aperture means including a first aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, a second aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said aperture means including a third aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said second aperture being disposed axially between said first aperture and said third aperture and spaced axially therefrom, said flow valve means comprising a spool valve having a first internal passage to allow the fluid medium to flow from said first aperture to said poppet valve means, said spool valve having a first end spaced axially from said poppet valve means and a first cavity formed therein, said spool valve having a second end axially opposite said first end and a second cavity formed therein, said spool valve including a second internal passage to allow the fluid medium to flow from either one of said first and second and third apertures to said second cavity of said spool valve, said housing means including an end cap in one end thereof opposite said armature means, said first biasing means comprising a first spring disposed between said end cap and said spool valve, said second biasing means comprising a second spring disposed between said first end of said spool valve and said poppet plate, said coil means comprising a magnetic coil to generate magnetic flux, connectors connected to said coil means for attachment to an electrical power source to allow current from an electrical power source to flow to said magnetic coil, a return member disposed adjacent one end of said coil means to create a closed flux loop by allowing magnetic flux to flow from said coil means through said return member and across said working gap to said armature means and said stationary member to said coil means, a guiding means for guiding axially said armature means between said stationary member and said poppet valve means, said guiding means comprising a shaft connected to said armature means and having one end slidably disposed in said stationary member and the other end slidably disposed in said poppet aperture, said armature means comprising an armature ring disposed about said shaft and having an annular shoulder at one end opposite said stationary member to open and close said poppet aperture, a third biasing means for biasing said armature means toward said poppet plate to close said poppet aperture, said adjustment means comprising a fastener threadably engageable with said stationary member, said third biasing means comprising a third spring disposed between one end of said shaft and said fastener.

A pressure regulating device for regulating the pressure of a flowing fluid medium, said device comprising;

• a stationary member, a movable armature means disposed axially from said stationary member for moving axially in relation to said stationary member, coil means disposed about said stationary member and said armature means and through which current flows for generating magnetic flux to create an attractive force to move said armature means in relation to said stationary member, housing means disposed about said coil means and said stationary member and said armature means for encasing said armature means and said coil means and said stationary member, aperture means for forming at least one aperture in said housing means to allow a fluid medium to enter and exit said housing means and to contact said armature means, and flow valve means spaced axially from one end of said armature means for moving independently of said armature means to prevent parasitic forces from being transmitted by said flow valve means to said armature means.;
• poppet valve means disposed axially between said flow valve means and said armature means for creating a restriction of fluid flow to said armature means;
• first biasing means for continuously biasing said flow valve means toward said poppet valve means;
• a working gap axially disposed between said stationary member and said armature means through which magnetic flux flows to create an attractive force between said stationary member and said armature means;
• said poppet valve means comprising a poppet plate having a poppet aperture through which the fluid medium flows;
• said aperture means including a first aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a second aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a third aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said second aperture being disposed axially between said first aperture and said third aperture and spaced axially therefrom;
• said flow valve means comprising a spool valve having a first internal passage to allow the fluid medium to flow from said first aperture to said poppet valve means;
• said spool valve having a first end spaced axially from said poppet valve means and a first cavity formed therein;
• said spool valve having a second end axially opposite said first end and a second cavity formed therein;
• and
• said spool valve including a second internal passage to allow the fluid medium to flow from either of said first aperture and said second aperture and said third aperture to said second cavity of said spool valve.

A pressure regulating device for regulating the pressure of a flowing fluid medium, said device comprising;

• a stationary member, a movable armature means disposed axially from said stationary member for moving axially in relation to said stationary member, coil means disposed about said stationary member and said armature means and through which current flows for generating magnetic flux to create an attractive force to move said armature means in relation to said stationary member, housing means disposed about said coil means and said stationary member and said armature means for encasing said armature means and said coil means and said stationary member, aperture means for forming at least one aperture in said housing means to allow a fluid medium to enter and exit said housing means and to contact said armature means, and flow valve means spaced axially from one end of said armature means for moving independently of said armature means to prevent parasitic forces from being transmitted by said flow valve means to said armature means;
• poppet valve means disposed axially between said flow valve means and said armature means for creating a restriction of fluid flow to said armature means;
• first biasing means for continuously biasing said flow valve means toward said poppet valve means;
• a working gap axially disposed between said stationary member and said armature means through which magnetic flux flows to create an attractive force between said stationary member and said armature means;
• said poppet valve means comprising a poppet plate having a poppet aperture through which the fluid medium flows;
• said aperture means including a first aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a second aperture formed in said housing means to allow the fluid medium to enter and exit said housing means;
• said aperture means including a third aperture formed in said housing means to allow the fluid medium to enter and exit said housing means, said second aperture being disposed axially between said first aperture and said third aperture and spaced axially therefrom;
• said flow valve means comprising a spool valve having a first internal passage to allow the fluid medium to flow from said first aperture to said poppet valve means;
• said spool valve having a first end spaced axially from said poppet valve means and a first cavity formed therein;
• said spool valve having a second end axially opposite said first end and a second cavity formed therein;
• said spool valve including a second internal passage to allow the fluid medium to flow from either of said first aperture and said second aperture and said third aperture to said second cavity of said spool valve;
• said housing means including an end cap in one end thereof opposite said armature means;
• said first biasing means comprising a spring disposed between said end cap and said spool valve;
• said spool valve having a recessed portion about the circumference thereof between said ends of said spool valve;
• said coil means comprising a magnetic coil to generate magnetic flux;
• connectors connected to said coil for attachment to an electrical power source to allow electrical current to flow to said coil;
• a return member disposed adjacent one end of said coil means to create a closed flux loop by allowing magnetic flux to flow from said coil means to said stationary member and said armature means across said working gap and through said return member to said coil means;
• said armature means comprising a cylindrical shape having a surface at one end opposite said stationary member to open and close said poppet aperture;
• and
• a second biasing means for biasing said armature means toward said poppet plate to close said poppet aperture.