Patents by Inventor Andrew R. L. Howe
Andrew R. L. Howe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7030782Abstract: A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in a first and second receive circuits whose position varies with the relative movement between the two members. In addition to carrying information relating to the relative position between the two members, the signals induced in the receive circuits also comprise information defining the relative orientation of the two movable members, and by suitable processing of the received signals the relative orientation of the two members can also be determined.Type: GrantFiled: March 10, 2004Date of Patent: April 18, 2006Assignee: Synaptics (UK) LimitedInventors: David T. E. Ely, Ross P. Jones, James M. C. England, Alexander W. McKinnon, Robert M. Pettigrew, Andrew N. Dames, Andrew R. L. Howe
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Publication number: 20040169594Abstract: A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in a first and second receive circuits whose position varies with the relative movement between the two members. In addition to carrying information relating to the relative position between the two members, the signals induced in the receive circuits also comprise information defining the relative orientation of the two movable members, and by suitable processing of the received signals the relative orientation of the two members can also be determined.Type: ApplicationFiled: March 10, 2004Publication date: September 2, 2004Applicant: SYNAPTICS (UK) LIMITEDInventors: David T.E. Ely, Ross P. Jones, James M.C. England, Alexander W. McKinnon, Robert M. Pettigrew, Andrew N. Dames, Andrew R.L. Howe
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Publication number: 20030062889Abstract: A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in a first and second receive circuits whose position varies with the relative movement between the two members. In addition to carrying information relating to the relative position between the two members, the signals induced in the receive circuits also comprise information defining the relative orientation of the two movable members, and by suitable processing of the received signals the relative orientation of the two members can also be determined.Type: ApplicationFiled: October 24, 2002Publication date: April 3, 2003Applicant: Synaptics (UK) LimitedInventors: David T.E. Ely, Ross P. Jones, James M.C. England, Alexander W. McKinnon, Robert M. Pettigrew, Andrew N. Dames, Andrew R.L. Howe
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Patent number: 6489899Abstract: A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in a first and second receive circuits whose position varies with the relative movement between the two members. In addition to carrying information relating to the relative position between the two members, the signals induced in the receive circuits also comprise information defining the relative orientation of the two movable members, and by suitable processing of the received signals the relative orientation of the two members can also be determined.Type: GrantFiled: July 27, 2000Date of Patent: December 3, 2002Assignee: Synaptics (UK) LimitedInventors: David T. E. Ely, Ross P. Jones, James M. C. England, Alexander W. McKinnon, Robert M. Pettigrew, Andrew N. Dames, Andrew R. L. Howe
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Patent number: 6249234Abstract: A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in a first and second receive circuits whose position varies with the relative movement between the two members. In addition to carrying information relating to the relative position between the two members, the signals induced in the receive circuits also comprise information defining the relative orientation of the two movable members, and by suitable processing of the received signals the relative orientation of the two members can also be determined.Type: GrantFiled: July 8, 1998Date of Patent: June 19, 2001Assignee: Absolute Sensors LimitedInventors: David T. E. Ely, Ross P. Jones, James M. C. England, Alexander W. McKinnon, Robert M. Pettigrew, Andrew N. Dames, Andrew R. L. Howe
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Patent number: 5815091Abstract: In a linear position encoder, a support is provided upon which a pair of phase quadrature windings are mounted. The windings are arranged to have a sinusoidal magnetic sensitivity characteristic along the length of the support. Mounted on a movable element there is a resonant circuit including a coil and capacitor that can magnetically couple with the windings. When the circuit is excited, it induces currents in the windings that are dependent upon the position of the circuit within a period T.sub.s of the windings. An excitation and processing unit is provided to energize the circuit and to process the signals induced in the windings. The encoder may in a variation, measure rotational or radial position instead of translation.Type: GrantFiled: December 12, 1996Date of Patent: September 29, 1998