Emergency key mechanism on a cylinder lock with a double locking

Details Emergency key mechanism on a cylinder lock with a double locking Emergency key mechanism on a cylinder lock with a double locking

1975-09-16

1977-06-28

Gilliam, Paul R.

Locks

Operating mechanism

Key

70398, 70DIG60, E05B 1704

Patent

active

040317293

ABSTRACT:
There is disclosed an emergency key mechanism on a cylinder lock with a double locking cylinder and a locking coupling axially moveably fitted thereon. The mechanism comprises a coupling spindle and two coupling wings mounted in a rotary manner thereon for the alternative coupling of a cam for the locking bolt arranged in rotary manner between the two locking cylinders in the center of the stator common thereto to one of the two cylinder rotors by alternative positive locking engagement of one of the two non-rotary coupling wings axially displaceable in the rotors in an opening of the cam web, wherein the two coupling wings are axially displaceable on the coupling spindle and when the locking coupling is in the normal position are axially spaced from one another by a spring positioned on the said coupling, and wherein at least one of the two coupling wings has an operating member, and via the latter is coupleable in the cam web by an operating pin mounted in axially displaceable manner in the shortened key blade of an emergency key.

REFERENCES:
patent: 36024 (1862-07-01), Pimentel et al.

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