Magnetic marker assembly

• US 3,916,821 A
• Filed: 06/19/1972
• Issued: 11/04/1975
• Est. Priority Date: 06/19/1972
• Status: Expired due to Term

• Current Assignee: Aqua Survey & Instrument Company
• Original Assignee: Othmar W. Pies
• Inventors: Pies, Othmar W.
• Primary Examiner(s): Swisher, S. Clement
• Assistant Examiner(s): Corr, Denis E.
• Application Number:
  US05/264,179
• Time in Patent Office: 1,233 Days
• Field of Search: 116/114R,132,63P,63 52/103,104
• US Class Current: 52/103
• CPC Class Codes: G01C 15/04 Permanent marks; Boundary markers
• CPC Class Codes: G01V 15/00 Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00

Abstract

A marker assembly including an elongated upright iron stake and a marker member mounted on an upper portion of the stake. The marker member includes a permanent magnet inside a housing. An elongated upright socket in the housing receives the upper portion of the stake with the magnet being exposed in the socket and engaging an upper end of the stake.

Claims

1. A marker assembly which comprises an elongated upright driveable stake of magnetic responsive material and a marker member mounted on an upper portion of the stake, the marker member including a permanent magnet and a housing surrounding the magnet, there being an elongated upright socket in the housing receiving the upper portion of the stake, the magnet being exposed in the socket and engaging an upper end of the stake.

2. A marker assembly as in claim 1 wherein walls of the socket engage and grip the upper end portion of the stake.

3. A marker assembly as in claim 1 wherein the housing is formed of dielectric material.

4. A marker assembly as in claim 1 wherein the housing includes a tubular main body having the socket therein and a counterbore at the socket, the magnet is received in the counterbore, there being an annular shoulder on the main body engaging the magnet, and a plug is mounted in the counterbore and engages the magnet to hold the magnet in the counterbore.

5. A magnetic marker member which includes a permanent magnet and a housing surrounding the magnet, there being an elongated upright socket in the housing for receiving the upper portion of a stake, the magnet being exposed in the socket and engageable with an upper end of the stake.

6. A marker member as in claim 5 wherein the housing includes a tubular main body having the socket therein and a counterbore at the socket, the magnet is received in the counterbore, there being an annular shoulder on the main body engaging the magnet, and a plug is mounted in the counterbore engaging the magnet to hold the magnet in the counterbore.