Movable or removable closures – Mounted for multidirectional or oblique movement – Sequential translation and swinging
Patent
1983-04-18
1984-11-06
Kannan, Philip C.
Movable or removable closures
Mounted for multidirectional or oblique movement
Sequential translation and swinging
49258, 52192, 52196, E05D 1558
Patent
active
044804083
ABSTRACT:
A door for closing the vertical opening in a silo wall which is self-storing thereby eliminating the necessity of removing the door through the base of the silo as the product is unloaded from the silo and eliminating the necessity of carrying the door up a ladder and inserting it into each vertical space before the silo is filled with silage or other crop product. The self-storing door includes a hinge structure attached to one side of the door opening with the hinge structure including a pair of horizontal, parallel supporting straps which are slidably connected with the vertical door to enable the door to swing and slide longitudinally on the straps sufficiently to enable it to be stored in an open position without the necessity of completely removing the door, lowering it to ground level and carrying it to a storage area for subsequent reinsertion in the vertical opening when the silo is being filled. The self-storing door may be used with a stave type silo with two steps being provided on each door to form a vertical ladder when all of the doors are in position or used in a concrete silo in which steps are already permanently installed. The door is recessed in the periphery of the vertical opening in order to prevent the door from sagging and provide a substantially flush inner surface to the silo to enable use of automatic silo unloaders which usually have some type of guide wheel structure rollingly engaging the inner surface of the silo.
REFERENCES:
patent: 157100 (1874-11-01), Munzinger
patent: 1130307 (1915-03-01), MacCallum et al.
patent: 1139244 (1915-05-01), Warren
patent: 1331770 (1920-02-01), Hulen et al.
patent: 4262447 (1981-04-01), Schneier et al.
patent: 4271632 (1981-06-01), Vanderloop
Deuman, Sr. Gerald J.
Sannes Norman
Deuman, Sr. Gerald J.
Jacobson Harvey B.
Kannan Philip C.
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