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US 6,871,668 B2Granted
Variable force actuator with a double needle poppet assembly
AssigneeDelphi Technologies, Inc.
InventorsAlejandro Moreno, Conrado Carrillo
Life of this patent
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Abstract
A variable force actuator with a double needle poppet assembly includes a housing in which a first poppet and a second poppet are slidably disposed. The second poppet fits within the first poppet, and both poppets move when a nearby coil is energized to establish, in combination, a fluid flow configuration in response to the amount of energy applied to the coil.
Claims12
An actuator, comprising;
- a housing;
- wherein the housing forms a supply port, a control port, and an exhaust port
- a first poppet having a proximal end having a nipple extending therefrom, a distal end, and a poppet head therebetween, said first poppet slidably disposed within the housing;
- a second poppet having a proximal end having a nipple extending therefrom, a distal end, and a poppet head therebetween, said second poppet slidably disposed within the housing adjacent to the first poppet, the second poppet being engageable with the first poppet and the first poppet being engageable with a seat of the housing to establish a fluid flow configuration, wherein the second poppet is identical to the first poppet, wherein the first poppet and the second poppet are movable between a de-energized configuration wherein flow is prohibited between the supply port and the control port, prohibited between the exhaust port and the supply port, and permitted between the control port and the exhaust port, plural partially energized configurations wherein flow is permitted between the supply port and the control port, between the control port and the exhaust port, and between the exhaust port and the supply port, and a fully energized configuration wherein flow is prohibited between the control port and the exhaust port and flow is permitted between the supply port and the control port;
- a first poppet seat;
- a second poppet seat, each poppet head being configured to engage both poppet seats.
3 more elements
A fluid control system, comprising:
- a fluid supply;
- a hydraulically controlled device;
- a fluid exhaust;
- and
- an actuator in fluid communication with the fluid supply, the hydraulically controlled device and the fluid exhaust, the actuator comprising:
- a first poppet slidably disposed within the housing;
- a second poppet slidably disposed within the housing adjacent to the first poppet, wherein the second poppet is identical to the first poppet;
- a first poppet seat;
- and
- a second poppet seat, each poppet being configured to engage both poppet seats, wherein each poppet comprises:
- a proximal end, including a nipple extending therefrom;
- a distal end;
- and
- a poppet head therebetween, the poppet head being configured to engage the first poppet seat and the second poppet seat.
11 more elements
Dependencies are inferred from the claim text.