US 4,800,741 A · Electrically and manually operable door lock with convenient backset selection

Abstract

A rim lock which includes a housing, a bolt displaceable in the housing, a strike which receives the bolt, a solenoid which is mounted on the housing and has a coil, a plunger which is axially reciprocal in the coil, a crosspiece fin which is disposed between and which is rigidly affixed to the plunger and the bolt, a front inner lever which has at least one pin and is rotationally mounted in the housing and is in mechanical communication with the crosspiece fin, a spring which is operatively braced between the crosspiece fin and the housing, apparatus which electrically energizes the coil, holding appartus which are operatively engageable between the bolt and the housing and mechanically retains the bolt, a key operated lock cylinder, a rear inner lever which has at least one pin and is rotationally mounted in the housing and is in mechanical communication with the crosspiece fin, and coupling apparatus which includes an interchangeable backset plate which is engaged between the key-operated lock cylinder and the bolt and which displaces the bolt axially upon operation of the key-operated lock cylinder. The interchangeable backset plate is one of a plurality of interchangeable backset plates each being removably mounted to the housing and each having a different backset so that a single rim lock can fit on doors with different size stiles and required backsets.

In combination with a door post and a door having a stile inwardly engageable therewith and having an outwardly directed front face and an inwardly directed rear face, a rim lock comprising:

(a) a housing secured to the rear stile face and forming a guide extending along a longitudinal axis;
(b) a bolt displaceable in said guide along said longitudinal axis between an inner position generally retracted in said housing and an outer position projecting axially therefrom;
(c) a strike disposed on the door post and being formed with a recess opening axially toward the stile and receiving said bolt in said outer position thereof when the stile engages the door post;
(d) a solenoid mounted on said housing and having a coil centered on said longitudinal axis;
(e) a plunger axially reciprocal in said coil of said solenoid;
(f) a crosspiece fin disposed between and rigidly affixed to said plunger and said bolt;
(g) a front inner lever having at least one pin and being rotationally mounted in said housing and being in mechanical communication with said crosspiece fin;
(h) a spring operatively braced between said crosspiece fin and said housing and urging said bolt axially outward into said outer position to a distance controlled by said front inner lever;
(i) means for electrically energizing said coil of said solenoid and pulling said plunger, said crosspiece fin, and said bolt axially backward against said spring into said inner position of said bolt;
(j) holding means operatively engageable between said bolt and said housing for mechanically retaining said bolt in said inner position;
(k) a key operated lock cylinder having a stem and being disposed on the front face of the stile of the door;
(l) a rear inner lever having at least one pin and being rotationally mounted in said housing and being in mechanical communication with said crosspiece fin;
(m) first coupling means including an interchangeable backset plate engaged between said key-operated lock cylinder and said bolt for displacing said bolt axially upon operation of said key-operated lock cylinder, said interchangeable backset plate being a one of a plurality of interchangeable backset plates each being removably mounted to said housing and each having a different backset so that a single rim lock can fit on doors with different size stiles and required backsets, said each one of said plurality of interchangeable backset plates containing a bushing and a throughbore through which is disposed said bushing, said bushing having an outer face and an inner face rigidly connected to said rear inner lever, said stem of said key-operated lock cylinder being disposed within said outer face of said bushing so that when said key-operated lock cylinder is operated said stem rotates said bushing which rotates said rear inner lever causing said at least one pin of said rear inner lever to move said bolt via said crosspiece fin since said crosspiece fin is rigidly affixed to said bolt;
(n) manual operating means pivotally mounted on said housing, said manual operating means including a finger lever having a shaft with a free end;
and
(o) second coupling means engageable between said manual operating means and said bolt for displacing said bolt axially upon manual pivoting of said manual operating means, said second coupling means including said free end of said shaft being rigidly connected to said front inner lever so that when said finger lever is rotated said shaft rotates said front inner lever causing said at least one pin of said front inner lever to move said bolt via said crosspiece fin said crosspiece fin is rigidly affixed to said bolt.

13 more elements

Facts

Application

06/905,312Filed 9 Sep 1986 · continuation in part

Priority

7 Feb 1983

Granted

31 Jan 1989

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

E05B 47/026
Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means:…
E05B 47/0002
With electric actuators; Constructional features thereof: with electromagnets
E05B 63/06
Locks or fastenings with special structural characteristics: with lengthwise-adjustable bolts ; with adjustable backset, i.e. distance from door edge
E05B 47/0004
Having a movable core: said core being linearly movable

Electrically and manually operable door lock with convenient backset selection

Life of this patent

Electrically and manually operable door lock with convenient backset selection

Life of this patent

Abstract

Claims21