Conveyors: fluid current – Intake to fluid current conveyor – Upstream of suction source
Patent
1990-09-04
1991-12-03
Focarino, Margaret A.
Conveyors: fluid current
Intake to fluid current conveyor
Upstream of suction source
406194, B65G 5314
Patent
active
050695827
ABSTRACT:
A vacuum producing device has a hollow housing with a first end having a downstream opening therein. This downstream opening has disposed thereacross a restrictive throat. The restrictive throat has a passage therethrough extending along a passage axis. This housing has a second end with an upstream wall. A suction tube is mounted through the upstream wall in the housing. The inner end of the suction tube is centrally located in the housing. The inner end of the suction tube is also aligned with and adjacent to the restrictive throat. The housing has a lateral opening. A conduit is mounted at the lateral opening to communicate with the housing. The longitudinal axis of the conduit is oriented at an acute angle with respect to the passage axis of the throat. The conduit can be connected to a blower to be pressurized thereby. This vacuum producing device has various purposes, including removal of trim produced when cutting plastic in the form of a roll. When used to remove trim, a working hose having an outlet end is mounted with its intake end mounted adjacent to the trimming knife to remove its trim. The outer end of the suction tube connects to the working hose. Also included is a flared duct communicating with the housing and aligned downstream of its throat.
REFERENCES:
patent: 992144 (1911-05-01), Babcock
patent: 1528360 (1925-03-01), Ayling
patent: 3099496 (1963-07-01), Kayser
patent: 3747738 (1973-07-01), Greck
Adams Thomas L.
Focarino Margaret A.
Kannofsky James M.
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