Blast Hole Plugging Apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 2, 2010
app pub date -
Sep 20, 2007
filing date -
Sep 20, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Apparatus for plugging a hole, such as a bore hole used in blasting, comprises a platform shaped to fit within the hole and to support material such as explosives or stemming at a desired depth in the hole. The platform takes the form of a plate or tray which is generally ellipsoidal in shape so that it fits snugly within the hole when inclined transversely relative to a longitudinal axis of the hole. The plate has a central load support region and a peripheral region for engaging the wall of the hole. The apparatus includes a locking member, typically a length of rigid pipe, attached movably to the platform. The locking member is moveable between a first position in which it is supported clear of the wall of the hole below the platform, and a second position in which it spans the hole to lock the platform in position in the hole. An elongated actuating member in the form of a cord or line is connected to the locking member and platform for lowering the apparatus into the hole and for moving the locking member between its first and second positions.
First Claim
Other Claims data not available