Device for retaining a keylock key

Details Device for retaining a keylock key Device for retaining a keylock key

1992-09-22

1993-08-24

Cuomo, Peter M.

Locks

Operating mechanism

Key

70370, 70451, 292251, E05B 1506

Patent

active

052378438

ABSTRACT:
A keylock system comprising a lock and a key for opening and closing the lock, the key having an outer radial retaining stub protruding radially outward, the lock including a base plate for attachment to a surface of an enclosure, a cylinder rotatably mounted within the base plate, the cylinder having a first end adapted to engage the key, and a second end protruding from the base plate, the cylinder being rotatable between open and closed positions, and retaining sleeve threaded onto the cylinder. The retaining sleeve comprises a plurality of retaining fingers engaged with the cylinder to a low rotation thereof, an immobilizing finger for engagement with the base plate to prevent rotation of the retaining sleeve, and a top annular surface defining an opening having a reduced diameter which allows passage of the key therethrough. The top annular surface has a slot to accommodate the outer radial retaining stub of the key, the slot of the retaining sleeve being arranged with respect to the cylinder such that the key is retained within the lock by abutting contact between the outer radial retaining stub and the top annular surface in the open position, and such that the key may be disengaged from the lock in the closed position.

REFERENCES:
patent: 1568434 (1926-01-01), Winterson
patent: 1580611 (1926-04-01), Kirkpatrick
patent: 1639661 (1927-08-01), Newcomb
patent: 2745275 (1956-05-01), Jacobi
patent: 3251205 (1966-05-01), Kerr
patent: 3907348 (1975-09-01), Bates et al.
patent: 4139998 (1979-02-01), Jeavons et al.

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