Abstract:
A field-altering device for an inductive sensor has an elongated body with a substantially saw-tooth profile. The body is made of steel or other type ferrous material. With use in a Hall-effect sensor, the body moves relative to the sensor causing the field to vary periodically with time. The sensor generates an electrical signal in dependence on the field variations, the electrical signal having a saw-tooth pattern.
Abstract:
An electrical cordset for connecting a sensor connector used with a piston position sensor located within a high pressure environment and a control system. The cordset is an electrical conductor having a standard industry connector to connect to the sensor connector and includes a casing intermediate the ends of the cordset to contain and seal therein signal conditioning circuitry to condition signals passing through the electrical conductor. The signal conditioning circuitry includes a circuitboard and a potting compound fills the casing and seals the signal conditioning circuitry fully within the casing to protect the circuitry from the hostile external environment and affix the electrical conductor to the casing. The affixation of the casing to the electrical conductor is further accomplished by use of grommets that are sealed to the electrical conductor and interfit within openings in the casing.
Abstract:
A switching mechanism includes a housing, an actuator retained within the housing, and an electrical switching apparatus. The actuator includes an actuation element retained by the housing, where at least a portion of the actuation element is positioned for receiving an actuation load, and a plunger substantially in contact with the actuation element and operable to translate when an actuation load is applied to the actuation element. A sealing element placed around a second cylindrical portion of the plunger contacts inner surfaces of the housing to provide a seal between a first end and second end of the housing. The actuator also includes a spring operable to apply a force to resist translation of the plunger. An electrical switching apparatus is retained by the second end of the housing.
Abstract:
A sensor mountable within a hydraulic cylinder provides a precision signal indicative of the position of the piston. The sensor includes a flexible connector attached between the cylinder piston and a converting element for sensing the piston displacement. The converting element comprises a pick-up spool, under tension, coupled to the other end of the connector and rotatable about an axis. A lead screw engages threds on the spool, and translates linearly when the spool rotates. A non-contacting electromechanical transducer senses the position of the lead screw, and provides an output signal proportional to the motion or position of the movable element. A high pressure seal assembly provides an electrical path between the sensor and the external connector.
Abstract:
A linear position sensing system includes a sensor, a conduit and an enclosure. The sensor has a connector and a converting element, where the connector includes a first end attached to the converting element and a second end that passes through the conduit and is configured for attachment to a moveable element of an external device. The enclosure houses the sensor. The conduit includes a first end fitting that is attached to the enclosure and a second end fitting that is affixed at a port or other aperture of the external device. The second end of the connector is configured to be inserted in the port other aperture and attached to the moveable element without disassembly of the external device.
Abstract:
A linear position sensor is installed inside the pressure vessel of a hydraulic accumulator to provide positional information for the moveable element inside of the accumulator. The positional information provides accumulator charge condition data for use in hydraulic systems such as vehicular regenerative braking systems and generalized industrial accumulator systems. Charge condition data allows for optimized control and operation of the hydraulic system.
Abstract:
A position sensor (10) includes a stationary frame (12) supporting a rotatable spool (20) onto which a cable (28) is wound in a plurality of individual windings (30). A distal end of the cable (28) extends through a lead guide (34) for attachment to an object whose position is desired to be sensed. As the object moves, the cable (28) is wound or unwound about the spool (20) and the spool (20) rotates in direct correlation to the movement of the object. The spool (20) is retained in the frame (12) through a threaded engagement between a threaded extension (22) extending from the spool (20) and a threaded opening in the frame (12). Thus, as the spool (20) rotates, the spool (20) travels along a linear path and a sensor (58) determines the location of the threaded extension (22) to determine the location of the object. A recoil spring (40) is used which may be located within the spool (20) itself.
Abstract:
A sensor (218) mountable within a hydraulic cylinder (200) provides a precision signal indicative of the position of the piston (212) utilizing a non-contacting electromechanical transducer. The sensor includes a flexible connector (216) attached between the cylinder piston and a converting element (220) for sensing the displacement of the cylinder piston. The converting element comprises a pick-up spool (310) coupled to the other end of the connector and rotatable about an axis. The spool is under tension from a spring (317) coupled to the spool. A lead screw (324) engages threads on the interior of the spool, and translates along an axis when the spool rotates. A transducer (323) is disposed to sense the position of the lead screw, and provides an output signal proportional to the motion or position of the movable element. The transducer may be an LVDT or other non-contacting transducer.
Abstract:
A linear position sensor is installed inside the pressure vessel of a hydraulic accumulator to provide positional information for the moveable element inside of the accumulator. The positional information provides accumulator charge condition data for use in hydraulic systems such as vehicular regenerative braking systems and generalized industrial accumulator systems. Charge condition data allows for optimized control and operation of the hydraulic system.
Abstract:
A linear position sensor is installed inside the pressure vessel of a hydraulic accumulator to provide positional information for the moveable element inside of the accumulator. The positional information provides accumulator charge condition data for use in hydraulic systems such as vehicular regenerative braking systems and generalized industrial accumulator systems. Charge condition data allows for optimized control and operation of the hydraulic system.