A cylinder lock assembly including a cylinder portion, a barrel portion rotatably disposed on the cylinder portion, a plastic cover support member disposed in a cavity at the outboard end of the barrel portion, the support member having a wall portion with a beveled edge protruding beyond the confines of the cavity, a cover disc disposed over the cavity and engaging the beveled edge of the wall portion, and a retaining ring attached to the cylinder portion and engaging the cover disc in line contact to retain the latter on the lock assembly. The retaining ring forcibly urges the cover disc against the beveled edge thereby resiliently deforming the latter so that the cover disc is tightly pressed against the retaining ring to effect a seal against foreign matter intrusion.
Lock mechanism comprising a key operable cylinder rotatably mounted in a lock body, and characterized by internal and external weather seals for the cylinder. The external seal comprises annular sealing means encircling an enlarged head on the front of the cylinder. The internal seal comprises a keyhole shutter confined in a cavity in the front of the head.
A cylinder lock includes a rotor rotatably mounted in a bore of a stationary casing. A key passage in the rotor is blocked by a biased shutter which is caused to pivot against the action of a spring when a key is introduced into the key passage. The rotor includes a plurality of separated, spring-urged tumblers which engage with the key in the key passage. A soft-elastic wiper for removing water from the key is positioned in a lateral slot between the entrance of the key passage and a first tumbler. Flaps of the wiper form a normally closed slit which is openable by the force of the key when the key is advanced towards an operational position.
A door handle spring assembly for biasing a catch releasably coupling a door handle to a sleeve. The spring assembly includes a first arm engaged with the catch, a second arm extending outwardly from the sleeve, and a loop portion formed between the first and second arms. The first arm and the loop portion are retained within the sleeve. The spring assembly further functions to exert a radial biasing force between the handle and the sleeve to minimize play therebetween.
