Apparatus for blast cleaning surfaces disposed at angles within 45 degrees of vertical
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United States of America Patent
Stats
-
Aug 15, 1995
Grant Date -
N/A
app pub date -
Nov 10, 1993
filing date -
Nov 10, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blast cleaning machine which gravity feeds abrasive material when blasting at positions from angularly upward to angularly downward. The machine includes a housing, a blast assembly, a motor for rotatably driving the blast assembly and a hopper. The housing has a blast corridor, a return corridor and a blast opening communicating with the blast corridor and the return corridor. The blast assembly receives abrasive material from the hopper and propels the abrasive material through the blast corridor and blast opening against the surface to be blast cleaned. The hopper has straight walls which are substantially parallel with the blast opening for gravity feeding abrasive material straight into the blast assembly. The walls of the hopper provide effective gravity feeding of abrasive material to the blast assembly when the machine is blasting anywhere between a 45-degree angle upward and a 45-degree downward.
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Cited Art Landscape
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