Locks – Special application – For control and machine elements
Patent
1981-02-20
1984-05-15
Husar, Cornelius J.
Locks
Special application
For control and machine elements
70346, 70347, 70360, 70363, 70382, 70411, E05B 2710, E05B 1310, E05B 1704, E05B 1916
Patent
active
044480504
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION
The invention of this application is disclosed in prior co-pending International Application No. PCT/AU80/00023, filed June 18, 1980, the benefit of which is claimed.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to locks and particularly to locks adapted for a wide variety of applications providing domestic door locks, high level security locks with or without cooperating timing devices, motor vehicles ignition locks and the like.
2. Description of the Prior Art
The state of the locksmiths art has reached a very high level of expertise, particularly in relation to mechanically operated locks. Recent developments in key copying machines have however considerably reduced the security of these locks, in view of the ease with which key copies, including master keys, may be made and the difficulty for the lock concerned to be altered to reject a key that has been duplicated without authority.
BRIEF SUMMARY OF THE INVENTION
Our invention overcomes this difficulty and has been developed without reference to locks of the prior art. Accordingly many features of our lock are entirely novel. Whilst a preferred embodiment of the lock will be described herein with reference to a domestic door lock, in its broadest form our invention comprises a lock including a locking member, said locking member being movable between a disengaged and an engaged position, said lock including movable push rod actuating means and substantially immovable wards, said movable means being operable to cause said locking member to move between said disengaged and engaged positions, a key means interengageable with said wards and said movable push rod means, said key operative to actuate said push rod means and thereby said locking member.
According to a further aspect of the invention the said locking member is biassed towards the said disengaged position.
According to a still further aspect of the invention there is provided a lock having movable push rods and substantially immovable rod-like wards arranged in a generally parallel and preferably coaxial relationship; means for accomodating a key including a token at a position adjacent one end of the rod-like element; and means for moving the thus accommodated token over the substantially immovable rod-like wards and against the movable push rods, thereby to move the push rods.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention will now be described with reference to the accompanying drawings wherein:
FIG. 1 is a cross-sectional view showing the lock of this invention in a locked (unengaged) configuration with the cylinders equidistant within the casings, rather than eccentric and the handle withdrawn;
FIG. 2 is a cross-sectional view similar to FIG. 1 showing the lock in an unlocked (engaged) configuration;
FIG. 3 is an exploded view of the lock of FIG. 1;
FIG. 4 is an end view taken on the line IV--IV of FIG. 3;
FIG. 5 is an end view taken on the line V--V of FIG. 3;
FIG. 6 is a cross-sectional view of the key;
FIG. 7 is an elevational view of the key;
FIG. 8 is an inverted elevational view of the handle with the key in position;
FIG. 9 is a perspective view of the adjustment tool; and
FIG. 10 is a cross-sectional view taken on the line X--X of FIG. 1.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring to FIG. 1 and FIG. 3, there is provided a handle 10 having a cylindrical neck 11 adapted to be axially movable into and away from a collar 12 of a door rose 13. In use, the rose 13 is positioned within a suitable circular recess in a door (not shown) such that the shoulder 14 of the rose bears against the face of the door. FIGS. 1 and 2 clearly illustrate this, and emphasize a major advantage of this invention in that the lock mechanism is substantially within the door and not merely within the handle as is the case with the prior art. This of course adds to the security of the lock.
The rose 13 is secured to the door by means of bolts (not shown) passing through the door from the othe
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Nugent Leslie G.
Nugent Walter J.
Husar Cornelius J.
Pietruszka Carl F.
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