Borehole condition monitors
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The design is for a borehole condition monitor. The monitor has an elongate body with an obliquely truncated end, allowing the body to be pegged into the ground in the vicinity of a borehole drilled for blasting. A warning light is provided on a front face of the body. The warning light is activated by an activation tab which projects from an elongate transverse slot when the monitor is in an inactivated condition.
The broken line showing of structural features is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.
Claims
The ornamental design for borehole condition monitors, as shown and described.
4463986 | August 7, 1984 | Sodder et al. |
4581712 | April 8, 1986 | Perry et al. |
D348616 | July 12, 1994 | Apigian et al. |
5524523 | June 11, 1996 | Lubbe et al. |
20110006585 | January 13, 2011 | Holdcroft et al. |
Type: Grant
Filed: Jun 24, 2010
Date of Patent: Sep 13, 2011
Assignee: African Explosives Limited (Woodmead)
Inventors: Pieter Etienne Dreyer (Scottburg), Robert James Holdcroft (Johannesburg), Neville Robert Marillier (Germiston), Laurence Justin Pienaar Wilson (Midrand)
Primary Examiner: Antoine D Davis
Attorney: Carstens & Cahoon, LLP
Application Number: 29/364,538