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公开(公告)号：US10281347B2
公开(公告)日：2019-05-07
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: A tension monitoring apparatus is used for installing an underground utility by retraction that is applied to the utility. The tension monitoring apparatus includes a sensor for inground sensing of the tension force that is applied to the utility to produce a sensor signal. A processor monitors the tension force in a series of measurement intervals such that a plurality of tension force readings is generated for each of the measurement intervals. The processor stores a data set including a maximum tension force selected from the plurality of tension force readings for each one of the measurement intervals and copies the data set to a different location to create a copied data set after installation of the utility for subsequent selection and presentation of an overall maximum tension force.
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公开(公告)号：US20190127057A1
公开(公告)日：2019-05-02
申请号：US16137318
申请日：2018-09-20
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer , Mark H. Marvin
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：US10273796B2
公开(公告)日：2019-04-30
申请号：US15720865
申请日：2017-09-29
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , Rudolf Zeller , John E. Mercer
IPC: G01V3/08 , E21B7/04 , E21B44/02 , G01V3/15 , E21B47/022
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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公开(公告)号：US20180038982A1
公开(公告)日：2018-02-08
申请号：US15785986
申请日：2017-10-17
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer , Albert W. Chau
Abstract: Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.
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公开(公告)号：US09810053B2
公开(公告)日：2017-11-07
申请号：US15187917
申请日：2016-06-21
Applicant: Merlin Technology Inc.
Inventor： John E. Mercer
IPC: E21B47/024 , E21B44/00 , E21B7/04 , E21B7/06 , E21B47/022 , E21B47/12
CPC classification number: E21B44/005 , E21B7/046 , E21B7/06 , E21B7/068 , E21B44/00 , E21B47/02224 , E21B47/024 , E21B47/122
Abstract: A drilling system performs underground boring using a drill rig and a boring tool which is configured for moving through the ground under control of the drill rig to form an underground bore. A monitoring arrangement, forming part of the system, includes a detection arrangement at the drill rig for monitoring at least one operational parameter to produce a data signal relating to at least one of a utility to be installed in the underground bore, the drill rig and the boring tool. A portable device forms another part of the system for receiving the data signal relating to the operational parameter for use by the portable device. A communication arrangement, for example using telemetry, transfers the data signal from the drill rig to the portable device. The operational parameter may be monitored for the purpose of preventing equipment failure.
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Patent Agency Ranking
公开(公告)号：US09798032B2
公开(公告)日：2017-10-24
申请号：US15350639
申请日：2016-11-14
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , John E. Mercer
CPC classification number: G01V3/081 , E21B47/0905 , G01V3/15 , G01V3/30 , G01V3/38
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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公开(公告)号：US09789958B2
公开(公告)日：2017-10-17
申请号：US15345273
申请日：2016-11-07
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：US09739140B2
公开(公告)日：2017-08-22
申请号：US14845231
申请日：2015-09-03
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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公开(公告)号：US20170160418A1
公开(公告)日：2017-06-08
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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公开(公告)号：US20170058663A1
公开(公告)日：2017-03-02
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.
Abstract translation: 一种便携式定位器和方法，用于在包括至少一个大致直的导电电缆线的区域中建立电缆线的位置，该电缆线延伸穿过电缆线的区域，定位信号包括用于测量电缆线的局部通量强度的第一布置 将定位信号放置在该区域内的第一个地上点，便携式定位器在第一个地面上处于特定取向。 第二种方案使用局部通量强度来建立电缆线角度取向，其限制相对于便携式定位器在上述地面点的特定取向的电缆线的可能方向。 第三布置使用测量的局部通量强度来建立从基于定位信号的某些特性的可能方向中选择的电缆线的实际方向。
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