Invention Grant
- Patent Title: Magnetic field canceling audio speakers for use with buried utility locators or other devices
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Application No.: US15870787Application Date: 2018-01-12
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Publication No.: US10555086B2Publication Date: 2020-02-04
- Inventor: Ray Merewether , Mark S Olsson
- Applicant: SeeScan Inc.
- Applicant Address: US CA San Diego
- Assignee: SEESCAN, INC.
- Current Assignee: SEESCAN, INC.
- Current Assignee Address: US CA San Diego
- Agent Steven C. Tietsworth, Esq.
- Main IPC: H04R9/00
- IPC: H04R9/00 ; H04R9/06 ; H04R1/28 ; H04R9/02 ; H04R19/01
Abstract:
Magnetic field cancelling audio speakers and associated devices are disclosed. In one embodiment, a utility locator includes an audio speaker device with two loudspeaker drivers positioned and electrically connected to reduce emitted magnetic fields over a range of frequencies corresponding with locator sensing frequencies.
Public/Granted literature
- US20190028812A1 MAGNETIC FIELD CANCELING AUDIO SPEAKERS FOR USE WITH BURIED UTILITY LOCATORS OR OTHER DEVICES Public/Granted day:2019-01-24
Information query
