1980-11-13
1982-09-07
Wolfe, Robert L.
Locks
Portable
70 18, 70 34, 70 38C, E05B 7300
Patent
active
043477208
ABSTRACT:
A chain lock is disclosed which has an outer sleeve fitting over an inner cylindrical case having a recess for the insertion of a link of a chain. When the case is rotated within the sleeve, a locking member moves within the recess to prevent release of the chain link from the recess. A locking device fits within a bore of the case and extends through a hole in the sleeve to prevent rotation of the case within the sleeve. When the locking device is removed from the bore in the case, the case is free to rotate to allow the locking member to clear the recess and to permit the chain link to be removed. The ends of the chain and the locking mechanism are completely contained within the case of the lock preventing tampering with the locking mechanism or access to the chain. There are no internal latches or levers to jam and the chain lock generally conforms to the shape of the chain.
REFERENCES:
patent: 1692826 (1928-11-01), Ganz
patent: 1792403 (1931-02-01), Stone
patent: 1921434 (1933-08-01), Stone
patent: 4057982 (1977-11-01), Drayton
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