The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2017
Filed:
Sep. 02, 2014
Ncm Innovations (Pty) Ltd, Johannesburg, ZA;
Rual Abreu, Johannesburg, ZA;
Cacius Mahlatj, Johannesburg, ZA;
NCM INNOVATIONS (PTY) LTD, Johannesburg, ZA;
Abstract
The invention provides a rock wall closure detection apparatus which includes an elongate member, variably extensible between a first wall and a second wall Of an underground excavation which comprises of a first and a second segment which are resiliently axially compressible relatively to one another when the waits close and an indicator module which produces a warning signal when actuated, attached to the first segment and an actuator attached to the second segment wherein on compression of the member, the actuator moves relatively to the module to actuate the module to produce the warning signal.