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公开(公告)号：US20200032586A1
公开(公告)日：2020-01-30
申请号：US16588836
申请日：2019-09-30
Applicant: Merlin Technology, Inc.
Inventor： Tim Shaw , John E. Mercer , Albert W. Chau
IPC: E21B7/06 , E21B47/022 , G01V3/18 , G01V3/34 , G01V3/38 , E21B47/024 , E21B47/12 , E21B44/00 , G01V3/08 , G01V3/15
Abstract: A boring tool is movable through the ground. A transmitter supported by the boring tool transmits an electromagnetic homing signal. A portable device monitors the electromagnetic homing signal and receives the electromagnetic homing signal in a homing mode for guiding the boring tool to a target position. A processor generates steering commands for guiding the boring tool based on a bore plan in a steering mode such that at least some positional error is introduced without using the electromagnetic homing signal. Switching from the steering mode to the homing mode is based on monitoring of the electromagnetic homing signal as the boring tool approaches the portable device to then guide the boring tool to the target position location in compensation for the positional error. Intermediate target positions are described as well as guiding the boring tool based on the homing signal so long as the portable device receives the signal.
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公开(公告)号：US20200018621A1
公开(公告)日：2020-01-16
申请号：US16579795
申请日：2019-09-23
Applicant: Merlin Technology, Inc.
Inventor： Rudolf Zeller , Guenter W. Brune , Albert W. Chau , John E. Mercer
IPC: G01D5/20 , G01V3/38 , G01V3/08 , E21B47/022
Abstract: A device rotates at least one static magnetic field about an axis, producing a rotating magnetic dipole field, and is movable in relation to the surface of the ground. The field is periodically sensed using a receiver to produce a receiver output responsive to the field. A positional relationship between the receiver and the device is monitored using the output. In one aspect, changing the positional relationship, by moving the device nearer to a boring tool which supports the receiver, causes an increase in accuracy of depth determination. In another aspect, determination of an actual overhead position of the boring tool, and its application, are described. Use of a plurality of measurements over at least one-half revolution of each magnet is disclosed. Establishing a surface radial direction toward a boring tool and resolution of multi-valued parameters is described. Calibration techniques, as well as a three transmitter configuration are also described.
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公开(公告)号：US10464662B2
公开(公告)日：2019-11-05
申请号：US16109170
申请日：2018-08-22
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer , Marc Feifel , Mark Marvin , Nicholas Albion
Abstract: An autopilot actuator includes first and second motors each including a rotatable motor output shaft such that either one or both of the motors can drive an actuator output shaft. An autopilot main unit enclosure is removably mounted to the helicopter proximate to a cyclic control and commonly houses autopilot actuators as well as main autopilot electronics. A cyclic vibration isolator is removably supported by an actuator shaft for co-rotation and coupled to the cyclic control to attenuate a cyclic vibration frequency at the actuator shaft while output rotations of the actuator shaft below a resonant frequency are coupled to the cyclic control. A force limited link includes first and second ends and a variable length between. The force limited link having a relaxed length when less than an unseating force is applied and the variable length changes when an applied force exceeds the unseating force to permit pilot override.
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公开(公告)号：US10428583B2
公开(公告)日：2019-10-01
申请号：US15675439
申请日：2017-08-11
Applicant: Merlin Technology, Inc.
Inventor： Tim Shaw , John E. Mercer , Albert W. Chau
IPC: E21B44/00 , E21B7/06 , G01V3/34 , G01V3/38 , E21B47/024 , E21B47/12 , G01V3/08 , G01V3/15 , E21B47/022 , G01V3/18
Abstract: A boring tool is movable through the ground. A transmitter supported by the boring tool transmits an electromagnetic homing signal. A portable device monitors the electromagnetic homing signal and receives the electromagnetic homing signal in a homing mode for guiding the boring tool to a target position. A processor generates steering commands for guiding the boring tool based on a bore plan in a steering mode such that at least some positional error is introduced without using the electromagnetic homing signal. Switching from the steering mode to the homing mode is based on monitoring of the electromagnetic homing signal as the boring tool approaches the portable device to then guide the boring tool to the target position location in compensation for the positional error. Intermediate target positions are described as well as guiding the boring tool based on the homing signal so long as the portable device receives the signal.
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公开(公告)号：US10254425B2
公开(公告)日：2019-04-09
申请号：US15783939
申请日：2017-10-13
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , John E. Mercer
Abstract: An arrangement and an associated method are described in which a boring tool is moved through the ground within a given region along a path in which region a cable is buried. The boring tool and the cable transmit a boring tool locating signal and a cable locating signal, respectively. Intensities of the boring tool locating signal and the cable locating signal are measured along with a pitch orientation of the boring tool. Using the measured intensities and established pitch orientation, a positional relationship is determined to relative scale including at least the boring tool and the cable in the region. The positional relationship is displayed to scale in one view. The positional relationship may be determined and displayed including the forward locate point in scaled relation to the boring tool and the cable. Cable depth determination techniques are described including a two-point ground depth determination method.
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Patent Agency Ranking
公开(公告)号：US20190024502A1
公开(公告)日：2019-01-24
申请号：US16139100
申请日：2018-09-24
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , John E. Mercer
CPC classification number: E21B47/0905 , E21B47/024 , G01C9/02 , G01V3/08 , G01V3/15 , G01V3/165 , G01V3/28
Abstract: A portable locator and method for establishing the location of the cable line in a region which includes at least one generally straight electrically conductive cable line extending across the region from which cable line a locating signal includes a first arrangement for measuring a local flux intensity of the locating signal at a first above ground point within the region with the portable locator in a particular orientation at the first above ground point. A second arrangement uses the local flux intensity to establish a cable line angular orientation which limits the possible directions to the cable line relative to the particular orientation of the portable locator at the above ground point. A third arrangement uses the measured local flux intensity to establish an actual direction of the cable line that is selected from the possible directions based on certain characteristics of the locating signal.
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公开(公告)号：US10094946B2
公开(公告)日：2018-10-09
申请号：US15435776
申请日：2017-02-17
Applicant: Merlin Technology, Inc.
Inventor： Guenter W. Brune , John E. Mercer , Albert W. Chau , Rudolf Zeller
Abstract: Location determination is performed using a transmitter including an elongated generally planar loop antenna defining an elongation axis. The elongation axis is positioned along at least a portion of a path. A magnetic field is then generated which approximates a dipole field. Certain characteristics of the magnetic field are then determined at a receiving position radially displaced from the antenna elongation axis. Using the determined certain characteristics, at least one orientation parameter is established which characterizes a positional relationship between the receiving position and the antenna on the path. The magnetic field may be transmitted as a monotone single phase signal. The orientation parameter may be a radial offset and/or an angular orientation between the receiving position and the antenna on the path. The antenna of the transmitter may be inserted into a first borehole to transmit the magnetic field to a receiver inserted into a second borehole.
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118.发明授权公开(公告)号：US09983227B2
公开(公告)日：2018-05-29
申请号：US15371497
申请日：2016-12-07
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , John E. Mercer , Scott Phillips
IPC: G01P15/18
CPC classification number: G01P15/18
Abstract: An accelerometer arrangement and method are described for determining accelerations of an inground tool. First and second triaxial accelerometers are supported such that a normal sensing axis of the first triaxial accelerometer is at least generally orthogonal to the normal sensing axis of the second triaxial accelerometer for determining the accelerations along the three orthogonal axes based on a combination of sensing axis outputs from one or both of the triaxial accelerometers. A weaker sensing axis of one triaxial accelerometer can be supported at least approximately normal to a weaker sensing axis of another triaxial accelerometer such that the weaker axes are not used. The triaxial accelerometers can be supported such that one axis of one accelerometer can be redundant with respect to another axis of another accelerometer. One triaxial accelerometer can be mounted on a tilted plane with respect to another triaxial accelerometer.
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119.发明授权公开(公告)号：US09957041B2
公开(公告)日：2018-05-01
申请号：US15158521
申请日：2016-05-18
Applicant: Merlin Technology, Inc.
Inventor： Mark Marvin , John E. Mercer , Derek Vetter
CPC classification number: B64C27/57 , B64C27/006 , B64C27/56 , B64C27/58 , B64C27/59
Abstract: An emergency collective actuator includes an actuator motor to produce an actuation force and an actuator linkage that directly engages a friction control lever that is pivotally supported on the collective stick of a helicopter to apply the actuation force directly to the friction control lever such that the actuation force initially disengages the friction control and then reduces the adjustable pitch toward a minimum collective pitch position. The actuator can include a clutch that slips to allow the pilot to overcome the actuation force and that slips responsive to an engagement of the friction control by the pilot, but otherwise the clutch co-rotates with the motor shaft to bias the adjustable pitch toward a minimum collective pitch position.
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公开(公告)号：US09915747B2
公开(公告)日：2018-03-13
申请号：US15359762
申请日：2016-11-23
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , John E. Mercer
IPC: G01V3/08 , E21B47/02 , E21B47/022 , E21B47/024 , E21B47/09 , E21B47/12
CPC classification number: G01V3/081 , E21B47/02 , E21B47/02224 , E21B47/024 , E21B47/0905 , E21B47/12 , G01V3/08
Abstract: A transmitter for use in an inground tool transmits a locating signal for tracking an underground position of the inground tool. The locating signal is characterized by a transmission frequency which changes responsive to detecting a roll orientation pattern in which the transmitter is held stationary for a predetermined period of time.
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