US 4,276,760 AGranted

Two-bolt lockset with simultaneous locking and unlocking of its bolts

OwnerRoger J. Nolininventor

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Abstract

A two-bolt lockset simultaneously locks and unlocks in response to a single action by an operator, such as a key and cylinder. A deadbolt couples to such an operator to project and lock or retract and unlock. A crank also responds to the locking of the deadbolt to move a slide that engages and locks an actuator of the second bolt, a latch bolt, to lock the latch bolt. The slide is biased away from the latch bolt so that upon retraction of the deadbolt and corresponding motion of the crank, the slide is freed of the crank and moves out of engagement with the actuator. Preferably, the slide is carried by a retractor so that both locks clear by the single turn of a single inside operator. The retractor responds to a retractor cam attached to the inside operator to translate. The slide moves out of engagement with the actuator upon such movement and forces the crank to withdraw the deadbolt.

Claims30

Dependent claims

An improvement in an integrated, two-bolt lockset of the type that mounts on the surface of a door comprising:

(a) a case;
(b) means for mounting the case to the inside of a door;
(c) a deadbolt assembly including an outside operator adapted for mounting on the outside of the door and an inside operator mounted on the case, the deadbolt assembly including a deadbolt and a deadbolt drive responsive to either of the deadbolt operators to rotate between a locked and an unlocked position, the deadbolt drive including crank means;
(d) a latch bolt assembly including an outside operator adapted for mounting on the outside of the door and an inside operator mounted on the case, the latch bolt assembly including a latch bolt and a latch bolt drive responsive to either of the latch bolt operators to rotate between a latch bolt open and a latch bolt closed position;
(e) a slide mounted in the case for translation between a locked position proximate the latch bolt assembly and an unlocked position proximate the deadbolt assembly;
(f) biasing means to bias the slide away from the latch bolt assembly;
(g) an actuator on the latch bolt drive;
(h) means of the slide and the actuator to lock the actuator and lock the latch bolt assembly in a locked position of the slide;
and
(i) the crank means of the deadbolt drive being rotatable between a locked and an unlocked position and operable during rotation between its unlocked and locked positions to engage the slide in its unlocked position and to translate the slide against the force of the biasing means into the locked position of the slide upon the locking actuation of either of the deadbolt operators, the crank means rotating with either of the deadbolt operators to disengage the slide and thereby unlock the actuator upon rotation of either of the deadbolt operators into an unlocked position.

7 more elements

In a double bolt lockset of the type that mounts on the surface of the door and which includes a deadbolt assembly and a latch bolt assembly, the deadbolt assembly including inside and outside operators to extend and retract the deadbolt through a deadbolt drive upon locking and unlocking the deadbolt operator, the latch bolt assembly having inside and outside operators to extend and retract the latch bolt through a latch bolt drive upon operation of either of such operators, and a case mounting the inside operators of both the latch bolt and deadbolt and having means to mount the case to a door, an improvement which comprises:

(a) a slide mounted in the case for translation towards and away from the deadbolt assembly and the latch bolt assembly;
(b) means to bias the slide away from the latch bolt assembly towards the deadbolt assembly;
(c) crank means coupled to the deadbolt assembly for rotation between a locked position in engagement with the slide and an unlocked position out of engagement with the slide, such positions corresponding to a locked deadbolt and an unlocked deadbolt;
(d) a latch actuator rigidly secured to the latch bolt drive and located in the case in line with the slide;
(e) means for the slide and the latch actuator to lock the latch actuator against rotation upon engagement by the slide in response to movement of the crank means to the locked position, the biasing means between the slide and the case moving the slide out of locking engagement with the actuator upon movement of the crank means to its unlocked position;
whereby, upon locking of the deadbolt the crank means engages the slide and translates the slide into locking engagement with the latch actuator and upon unlocking the deadbolt the crank means releases the slide to the biasing means and the slide unlocks from the latch actuator, and simultaneous locking and unlocking of the deadbolt and latch bolt occur.

3 more elements

(a) a retractor mounted in the case for translation towards and away from the deadbolt assembly and the latch bolt assembly between a locked position proximate the latch bolt assembly and an unlocked position proximate the deadbolt assembly;
(b) a slide mounted on the retractor and in the case for translation towards and away from the deadbolt assembly and the latch bolt assembly;
p1 (c) means to bias the slide away from the latch bolt assembly towards the deadbolt assembly;
(d) means to bias the retractor toward the latch bolt assembly;
(e) crank means coupled to the deadbolt assembly for rotation between a locked position in engagement with the slide and an unlocked position out of engagement with the slide, such positions corresponding to a locked deadbolt and an unlocked deadbolt, the crank means in rotating between the unlocked position and the locked position engaging the slide and translating the retractor and slide to the retractor's locked position;
(f) a latch actuator secured to the latch bolt drive and located in the case in line with the slide;
(g) means for the slide and the latch actuator to lock the latch actuator against rotation upon engagement by the slide in response to movement of the retractor to its locked position in response to movement of the crank means to its locked position;
and
(h) means coupled to the inside operator of the latch bolt assembly for moving the retractor against the force of its biasing means from its locked position and moving the crank means through the slide to its unlocked position upon operation of such operator;
whereby:
(i) upon locking of the deadbolt, the crank means engages the slide and translates the slide and retractor to lock the slide with the latch actuator;
(ii) upon unlocking the deadbolt the crank means releases the slide to the slide biasing means and the slide unlocks from the latch actuator;
and simultaneous locking and unlocking of the deadbolt and latch bolt occur;
and (iii) upon operation of the inside operator of the latch bolt assembly, when locked, both the latch bolt and deadbolt retract to open positions.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/086,945Filed 22 Oct 1979
Granted: 7 Jul 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

E05B 59/00
Locks with latches separate from the lock-bolts or with a plurality of
E05B 17/226
Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators:…
E05B 63/04
Locks or fastenings with special structural characteristics: for alternative use on the right-hand or left-hand side of wings
E05B 65/1086
For panic or emergency doors: locks with panic function, e.g. allowing opening from the inside without a ley even when locked from the outside