Locks – Special application – For control and machine elements
Patent
1983-01-31
1985-09-17
Smith, Gary L.
Locks
Special application
For control and machine elements
70371, 70417, 285 45, 285 80, 16386, F16B 4100
Patent
active
045412561
ABSTRACT:
A flange lock for preventing unauthorized access to flanged connections, comprises a pair of semi-cylindrical shells having face plates at at least one end thereof. The shells are hingedly interconnected by a tongue on one that passes through a slot in the other. At their free ends, the shells carrying three sleeves that align with each other in the closed position of the device, two sleeves on one shell and a third sleeve that fits between the first two, on the other shell. A screw-threaded nipple passes through two of the aligned sleeves in the closed position and is screwed into the end sleeve; and a screw type cam lock has a rod that passes through the nipple and screws into a plug carried by the end sleeve. The cam lock is non-rotatable relative to the nipple but its rod can be rotated to screw into and unscrew from the plug, thereby respectively to lock and release the assembly, when a key is inserted in the cam lock. The sleeves are carried by outwardly inclined plates thereby to increase the available space within the shells.
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Dubnicka Thomas J.
Smith Gary L.
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