Static structures (e.g. – buildings) – Fluent material hopper or storage container with material port – Framed port in wall
Patent
1996-04-08
1997-09-23
Wilson, Neill R.
Static structures (e.g., buildings)
Fluent material hopper or storage container with material port
Framed port in wall
52202, 411551, 411552, 49465, E04H 700, F16B 2100
Patent
active
056691904
ABSTRACT:
A detachable panel or grill for covering an opening in panelling of a wall or ceiling or in an appliance. The panel can be installed quickly and rigidly without the need for any special framing. The panel or grill can be installed or removed by the rotation of a single screw which passes through a threaded opening in an elongate fastening arm. The arm extends generally parallel to an inner surface of the panel during use thereof. The arm is pivotable relative to the panel between a first position usable for insertion of the arm into the opening and a second position used for clamping the panel to edge structure defining the opening. A slideway is connected to an inner surface of the panel and limits the extent of pivotal movement of the arm. The screw extends through a hole in the panel and connects the arm to the panel. A spring biases the arm so that it pivots towards the second position. In this position the arm travels transversely towards the inner surface of the panel when the screw is turned in one direction. Rotation of the screw in the opposite direction loosens the panel and enables removal thereof from the opening.
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Hammond Peter R.
Novera Products Inc.
Wilson Neill R.
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