Vacuum suction machine with high efficiency filter and operating interlock
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Jun 27, 1995
Grant Date -
N/A
app pub date -
Nov 5, 1993
filing date -
Mar 11, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum motor and fan are mounted within a housing, the lower end of which receives a high efficiency particle filter. The bottom of the housing includes a series of projections adapted to be received in corresponding apertures on an upper flange of the filter to prevent replacing the filter with an improper one. The projection/apertures also promote proper seating of the seal between the filter canister and the housing. A separate projection on the filter engages and actuates a lock-out switch carried by the housing to permit the machine to operate only when the filter is of proper size and capacity and it is properly seated on the housing.
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International Classification(s)
Cited Art Landscape
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