Movable or removable closures – Combined
Patent
1976-07-29
1978-02-07
Kannan, Philip C.
Movable or removable closures
Combined
49364, 49379, 49386, 214 17DB, E06B 700, B65G 6534, E05C 1500, E05F 110
Patent
active
040719774
ABSTRACT:
Automatically actuable silo door apparatus and a silo equipped with same. The apparatus preferably comprises a door member adapted to selectively block a silage discharge orifice, a hinge assembly for mounting the door, retractable gun means for automatically activating the door apparatus, and trigger apparatus responsive to silage level for selectively activating the gun means to open the door. In a preferred form of the invention each trigger means comprises a portion received within an upper adjacent silo door orifice whereby an automatic silo unloader will contact and activate it during the unloading operation. The hinge means preferably comprises first and second spaced apart door hinge bars, each having portions pivotally mounted to the door member and integral offset portions thereof pivotally received by the silo. The hinge means enables the door member to be moved out of and away from the silo door orifice when opened to prevent interference with the unloader. A silo disclosed herein comprises a plurality of vertically spaced apart silo doors which may be automatically, sequentially opened to facilitate automatic silo unloading.
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patent: 3017044 (1962-01-01), Englemann
patent: 3670907 (1972-06-01), Downing
patent: 3709345 (1973-01-01), Price
patent: 3792556 (1974-02-01), Anghinetti et al.
patent: 3797625 (1974-03-01), Price
patent: 3851908 (1974-12-01), Hester et al.
Kannan Philip C.
Rochester Silo, Inc.
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