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公开(公告)号：US20180044007A1
公开(公告)日：2018-02-15
申请号：US15723594
申请日：2017-10-03
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer , Mark H. Marvin
CPC classification number: B64C27/57 , B64C27/006 , B64C27/04 , B64C27/59
Abstract: A helicopter includes a rotor system having a rotor with an adjustable pitch that is controlled at least in part by a pilot using a collective control and which helicopter generates a Low RPM signal that is indicative of a threshold low rotational speed of the rotor. An actuator arrangement can move the collective control by exerting a force on the collective control such that the pilot is able to overcome the actuator force but which otherwise can move the collective control from a current operational position toward a minimum pitch position. A clutch can co-rotate with a motor to serve in transferring the actuation force to reduce the adjustable pitch and can slip relative to the actuator shaft assembly responsive to an application of a counterforce applied by the pilot to the collective control such that the counterforce overcomes the actuation force.
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公开(公告)号：US20180017454A1
公开(公告)日：2018-01-18
申请号：US15719239
申请日：2017-09-28
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Rudolf Zeller , John E. Mercer , Charles Yu Yat Tsang
Abstract: Tension monitoring is described using a sensor which may exhibit an offset for which compensation may be provided to produce a zero voltage amplified output or to increase dynamic range. An arrangement determines whether a power reset is responsive to a battery bounce such that an initially-measured system start-up parameter can be retained. The start-up parameter is automatically saved at start-up if the power reset is responsive to a start-up from a shut-down condition. The start-up parameter may be a zero tension amplified output responsive to the sensor offset at zero tension. Protection of a tension data set is provided such that no opportunity for altering the data set is presented prior to transfer of the data set. A housing configuration forms part of an electrical power circuit for providing electrical power to an electronics package from a battery.
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123.发明申请公开(公告)号：US20180010447A1
公开(公告)日：2018-01-11
申请号：US15676057
申请日：2017-08-14
Applicant: Merlin Technology, Inc.
Inventor： Rudolf Zeller , Gary Garrabrant , Timothy Bayliss , John E. Mercer
IPC: E21B47/12
CPC classification number: E21B47/122 , E21B7/046 , G01S11/06
Abstract: A system includes a transmitter for use in conjunction with a horizontal directional drilling system that transmits a multi-bit symbol stream that characterizes sensor symbols for receipt by an aboveground portable device. The portable device receives the symbol stream for aboveground recovery of the sensor signals. The transmitter can precisely place the symbol frequencies at least to avoid a noise environment, as well as to avoid powerline harmonics, and can utilize wave shaping for transmitted symbols at least to provide for transmission power control, spectral content control and wideband antenna matching. The receiver can measure the noise environment to identify the symbol frequencies used by the transmitter. The noise can be scanned at an incremental resolution across a wide frequency bandwidth for display or automatic symbol frequency selection.
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124.发明授权公开(公告)号：US09804287B2
公开(公告)日：2017-10-31
申请号：US15130840
申请日：2016-04-15
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer , Albert W. Chau
Abstract: A transmitter is part of a cable locating system for use in a region which contains at least first and second in-ground cables, each of which cables includes an electrically conductive component such that, when the first cable is driven at a locating signal frequency to emit a locating signal in an electromagnetic form, the locating signal is coupled to the second cable in a way which causes the second cable to generate a false locating signal in electromagnetic form. The transmitter generates the locating signal frequency for coupling onto the first cable and for transmitting a reference signal, which includes the locating signal frequency such that the reference signal includes a modulation envelope for comparison of the modulation envelope to the locating signal and to the false locating signal at a receiving location to distinguish the locating signal from the false locating signal.
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公开(公告)号：US09777567B2
公开(公告)日：2017-10-03
申请号：US15158456
申请日：2016-05-18
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , Rudolf Zeller , John E. Mercer
CPC classification number: E21B44/02 , E21B7/04 , E21B7/046 , E21B47/02216 , E21B47/02224 , G01V3/15
Abstract: A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of spaced apart positions along the bore, each position is characterized by a measured extension of the drill string. The steering tool further includes a receiver. At least one marker is positioned proximate to the intended path, for transmitting a rotating dipole field to expose a portion of the intended path to the field for reception by the receiver. The detected pitch orientation, the detected yaw orientation and the measured extension of the drill string are used in conjunction with magnetic information from the receiver to locate the steering tool. The steering tool may automatically use the magnetic information when it is available. A customized overall position determination accuracy can be provided along the intended path.
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Patent Agency Ranking
公开(公告)号：US20170240268A1
公开(公告)日：2017-08-24
申请号：US15591110
申请日：2017-05-10
Applicant: Merlin Technology, Inc.
Inventor： Carlos E. Golborne , Ray E. Debs , Mark Marvin , John E. Mercer
CPC classification number: B64C13/22 , B64C13/04 , B64C13/18 , B64C27/04 , B64C27/56 , B64C27/57 , B64D43/00 , G01C23/00 , G01C23/005 , G05G9/047 , G05G2009/04774
Abstract: A pilot control interface and method are described for selective control of an autopilot system by a pilot of an aircraft in which the autopilot system is installed. The pilot control interface includes a passive network that is selectively switchable between a plurality of states across an output interface that is made up of no more than two conductors that are in electrical communication with the autopilot system. Modification of a current autopilot flight mode can be performed incrementally or continuously based on respective momentary and continuous pilot input actuations.
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公开(公告)号：US09683436B2
公开(公告)日：2017-06-20
申请号：US15352363
申请日：2016-11-15
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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128.发明申请公开(公告)号：US20170082654A1
公开(公告)日：2017-03-23
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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公开(公告)号：US20160347442A1
公开(公告)日：2016-12-01
申请号：US15231650
申请日：2016-08-08
Applicant: Merlin Technology, Inc.
Inventor： Carlos E. Golborne , Ray E. Debs , Mark Marvin , John E. Mercer
CPC classification number: B64C13/22 , B64C13/04 , B64C13/18 , B64C27/04 , B64C27/56 , B64C27/57 , B64D43/00 , G01C23/00 , G01C23/005 , G05G9/047 , G05G2009/04774
Abstract: A pilot control interface and method are described for selective control of an autopilot system by a pilot of an aircraft in which the autopilot system is installed. The pilot control interface includes a passive network that is selectively switchable between a plurality of states across an output interface that is made up of no more than two conductors that are in electrical communication with the autopilot system. Modification of a current autopilot flight mode can be performed incrementally or continuously based on respective momentary and continuous pilot input actuations.
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公开(公告)号：US20160281491A1
公开(公告)日：2016-09-29
申请号：US15177297
申请日：2016-06-08
Applicant: Merlin Technology Inc.
Inventor： James W. Burrows , Guenter W. Brune , John E. Mercer
IPC: E21B44/00 , E21B7/04 , E21B47/022 , E21B47/024 , E21B7/10
CPC classification number: E21B44/00 , E21B7/04 , E21B7/046 , E21B7/10 , E21B47/02224 , E21B47/024 , G01V3/081 , G01V3/38
Abstract: A boring tool moves having a pitch orientation, a yaw orientation and a roll orientation and is steerable underground using the roll orientation. A maximum drill string curvature is established for steering. The boring tool is advanced over a path segment. An averaged roll characteristic is determined for movement of the boring tool along the path segment. A path segment pitch orientation is established based on at least one measured pitch orientation along the path segment. Using the maximum drill string curvature in combination with the averaged roll characteristic and the path segment pitch orientation, the yaw orientation is determined. The averaged roll characteristic is determined based on a series of incremental roll measurements that are spaced across the path segment. A set of coupled ordinary differential equations is used to characterize movement of the boring tool.
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